KR102511001B1 - Elevator system and inspection terminal - Google Patents

Abstract

The elevator system includes a car 11, a rope 14, a sheave 16, an electric motor 17, a calculation unit 43, a storage unit 40, a calculation unit 45, and a determination unit 46. The calculation unit 43 calculates the amount of rotation of the sheave 16 when the car 11 moves through a specific section of the hoistway 13 . The calculation unit 45 calculates the diameter of the portion of the rope 14 that is wound around the sheave 16 when the car 11 moves through the section. The determination unit 46 determines whether or not the rope 14 has deteriorated based on the diameter calculated by the calculation unit 45.

Description

Elevator system and inspection terminal

The present disclosure relates to an elevator system and an inspection terminal.

Patent Document 1 describes a device for inspecting a rope. The device described in Patent Document 1 includes a light emitter and a light receiver. A rope is disposed between the emitter and the receiver. The laser beam emitted from the projector strikes the rope. Also, the light receiver receives the laser light emitted from the light emitter. Based on the signal output from the light receiver, the outline of the rope is detected.

Patent Document 1: Japanese Patent Laid-Open No. 2008-214037

In the device described in Patent Document 1, there was a problem that additional equipment such as a light emitter and a light receiver was required in order to determine that the rope had deteriorated.

The present disclosure was made to solve the above problems. An object of the present disclosure is to provide an elevator system capable of determining that a rope has deteriorated without requiring additional equipment. Another object of the present disclosure is to provide an inspection terminal capable of determining that a rope has deteriorated without requiring additional equipment to an elevator device.

An elevator system according to the present disclosure includes an elevator car for moving a hoistway, a rope for hanging the car, a sheave around which the rope is wound, a motor for rotating the sheave, and a rotation of the sheave when the car moves in a specific section of the hoistway First calculation means for calculating the total amount, storage means for storing the first reference value, the second reference value, and the third reference value, the first reference value, the second reference value, and the third reference value and the diameter of the groove portion of the sheave, and 1 Based on the rotation amount calculated by the calculation means, second calculation means for calculating the diameter of the portion of the rope that is wound around the sheave when the car moves through the section, and based on the diameter calculated by the second calculation means Thus, determining means for determining whether or not the rope has deteriorated is provided. The first reference value is a reference value for the diameter of the groove portion of the sheave. The second reference value is a reference value for the diameter of the portion of the rope. The third reference value is a reference value for the amount of rotation of the sheave when the car moves through the section.

An elevator system according to the present disclosure includes an elevator car for moving a hoistway including a plurality of virtually divided sections, a rope for hanging the car, a sheave around which the rope is wound, a motor for rotating the sheave, and a plurality of elevator cars. First calculation means for calculating the amount of rotation of the sheave when moving each section of the first reference value and storage means for storing the second reference value and the third reference value for each of the plurality of sections, and for each of the plurality of sections , Based on the first reference value, the second reference value and the third reference value for the target section, the diameter of the groove of the sheave, and the amount of rotation of the sheave when the car moves through the corresponding target section, calculated by the first calculation means So, second calculation means for calculating the diameter of the portion of the rope that is wound around the sheave when the car moves through the corresponding target section, and based on the diameter calculated by the second calculation means, determine whether the rope is deteriorated It is provided with a determination means to The first reference value is a reference value for the diameter of the groove portion of the sheave. The second reference value for each of the plurality of sections is a reference value for the diameter of a portion of the rope that is wound around the sheave when the car moves through each of the plurality of sections. The third reference value for each of the plurality of sections is a reference value for the amount of rotation of the sheave when the car moves through each of the plurality of sections.

An inspection terminal according to the present disclosure is an inspection terminal for inspecting a rope in an elevator apparatus including an elevator car moving in a hoistway, a rope for hanging the car, a sheave around which the rope is wound, and a motor for rotating the sheave. . The inspection terminal includes: first calculation means for calculating the amount of rotation of the sheave when the car moves through a specific section of the hoistway; storage means for storing first reference values, second reference values, and third reference values; and first reference values , based on the second reference value and the third reference value, the diameter of the groove portion of the sheave, and the amount of rotation calculated by the first calculation means, calculate the diameter of the portion of the rope that is wound around the sheave when the car moves through the section 2nd calculating means which calculates, and determination means which determines whether or not the rope has deteriorated based on the diameter computed by the 2nd calculating means. The first reference value is a reference value for the diameter of the groove portion of the sheave. The second reference value is a reference value for the diameter of the portion of the rope. The third reference value is a reference value for the amount of rotation of the sheave when the car moves through the section.

An inspection terminal according to the present disclosure is an elevator device including an elevator car moving a hoistway including a plurality of virtually divided sections, a rope for hanging the car, a sheave around which the rope is wound, and an electric motor for rotating the sheave. In this, it is an inspection terminal for inspecting the rope. The inspection terminal includes a first calculation means for calculating the amount of rotation of the sheave when the car moves through each of the plurality of sections, a storage means for storing the first reference value and the second reference value and the third reference value for each of the plurality of sections; , For each of a plurality of sections, the first reference value, the second reference value and the third reference value for the target section, the diameter of the groove of the sheave, and the first calculation means. When the car moves through the corresponding target section Based on the amount of rotation of the sheave of the second calculation means for calculating the diameter of the portion of the rope that is wound around the sheave when the car moves through the corresponding target section, and based on the diameter calculated by the second calculation means, the rope and determining means for determining whether or not is degraded. The first reference value is a reference value for the diameter of the groove portion of the sheave. The second reference value for each of the plurality of sections is a reference value for the diameter of a portion of the rope that is wound around the sheave when the car moves through each of the plurality of sections. The third reference value for each of the plurality of sections is a reference value for the amount of rotation of the sheave when the car moves through each of the plurality of sections.

For example, in the elevator system according to the present disclosure, the first calculation means calculates the amount of rotation of the sheave when the car moves in a specific section of the hoistway. The second calculation means calculates the sheave when the car of the rope moves through the section based on the first reference value, the second reference value, and the third reference value, the diameter of the groove of the sheave, and the amount of rotation calculated by the first calculation means. Calculate the diameter of the part wound on. The determining means determines whether or not the rope has deteriorated based on the diameter calculated by the second calculating means. If it is this system, it can determine that a rope is deteriorating, without requiring additional equipment.

1 is a diagram showing an example of an elevator system in Embodiment 1;
2 is a diagram for explaining the function of the control device.
3 is a flowchart showing an example of operation of the control device.
Fig. 4 is a flowchart showing an example of degradation determination processing in S104.
5 is a view showing a state in which a rope is wound around a sheave.
6 is a diagram showing a measurement example of the diameter D.
Fig. 7 is a diagram showing another measurement example of the diameter D.
8 is a diagram for explaining the function of a calculation unit.
9 is a diagram for explaining the function of the correction unit.
Fig. 10 is a flowchart showing an example of obtaining the diameter D.
Fig. 11 is a flow chart showing another acquisition example of the diameter D.
12 is a diagram illustrating an example of hardware resources of a control device.
13 is a diagram illustrating another example of hardware resources of a control device.

Below, detailed explanation is given with reference to drawings. Redundant descriptions are simplified or omitted as appropriate. In each figure, the same code|symbol denotes the same part or a corresponding part.

Embodiment 1.

1 is a diagram showing an example of an elevator system in Embodiment 1; An elevator system shown in FIG. 1 includes an elevator device 1 . Elevator device 1 is connected to information center 3 via network 2 .

The network 2 is, for example, an IP network. An IP network is a communication network using IP (Internet Protocol) as a communication protocol. The network 2 may be a closed network or an open network. The information center 3 manages a number of elevator devices. Elevator device 1 is an example of an elevator device managed by information center 3 .

An elevator device (1) has a car (11) and a counterweight (12). The elevator car 11 moves up and down the hoistway 13 . The balance weight 12 moves up and down the hoistway 13 . The car 11 and the balance weight 12 are suspended from the hoistway 13 by the rope 14. The rope 14 is, for example, a wire rope.

The hoisting machine 15 includes a sheave 16, an electric motor 17, and an encoder 18 (not shown in FIG. 1). A rope 14 is wound around a sheave 16. The electric motor 17 rotates the sheave 16. That is, the electric motor 17 drives the car 11 . Encoder 18 detects the rotational angle of sheave 16. The encoder 18 outputs a signal according to the rotation angle from the reference. The encoder 18 is an example of a detector that detects the rotational angle of the sheave 16. The hoisting machine 15 is controlled by a control device 19 . Control device 19 is communicable with information center 3 via network 2 . The communication function of the control device 19 may be provided as a separate device in the elevator device 1 .

1 shows an example in which a hoisting machine 15 and a control device 19 are installed in a machine room 20 above a hoistway 13 . The hoisting machine 15 and the control device 19 may be installed in the hoistway 13 . When the hoisting machine 15 and the control device 19 are installed in the hoistway 13, the hoisting machine 15 and the control device 19 may be installed at the top of the hoistway 13, and the pit of the hoistway 13 may be installed on

A weighing device 21 is provided in the car 11 . The weighing device 21 measures the loaded load of the car 11 . 1 shows an example in which the scale device 21 is provided under the car 11 . The weighing device 21 may be provided at the end of the rope 14 .

A plate 22 is provided in the hoistway 13 . The plate 22 is arranged according to the height of each landing 23 at which the car 11 stops. 1 shows two landings 23 adjacent to each other vertically, for example, a landing 23 on the n floor and a landing 23 on the (n+1) floor. Below, when it is necessary to specify a boarding point individually, code|symbol 23-n is attached|subjected about the boarding point of n floor. Similarly, when it is necessary to specify individually a plate, the code|symbol 22-n is given about the plate arrange|positioned according to the height of the boarding point 23-n. For example, the plate 22-5 is arrange|positioned according to the height of the boarding point 23-5 on the 5th floor.

In the car 11, a detector 24 for detecting the plate 22 is provided. The detector 24 is a photoelectric sensor, for example. 1 shows an example in which an elevator car 11 is stopped at a landing 23 of a certain floor. The floor of the car 11 is arranged at the same height as the floor of the landing 23 of that floor. When the car 11 is arranged at the height shown in FIG. 1 , the detector 24 detects the plate 22 arranged according to the height of the landing 23 .

The speed governor 25 is a device for forcibly stopping the movement of the car 11 when the speed of the car 11 exceeds a specific speed. The speed governor 25 electrically stops the car 11 by cutting off power to the hoisting machine 15 when the speed of the car 11 exceeds a specific first speed. The speed governor 25 mechanically stops the car 11 by operating an emergency stop (not shown) when the speed of the car 11 exceeds a specific second speed. The second speed is a speed higher than the first speed.

The governor 25 includes a governor sheave 26, a speed governor rope 27, a connecting member 28, and an encoder 29 (not shown in FIG. 1).

In the example shown in FIG. 1 , the governor sheave 26 is rotatably provided in the machine room 20 . The governor sheave 26 may be provided at the top of the hoistway 13 . The speed control rope 27 is endless. The governor rope 27 is wound around the governor sheave 26. The connecting member 28 is provided in the car 11. The speed control rope 27 is connected to the car 11 through a connecting member 28. When the car 11 moves, the speed control rope 27 moves. When the governor rope 27 moves, the governor sheave 26 rotates. The encoder 29 detects the rotational angle of the governor sheave 26. The encoder 29 outputs a signal according to the rotation angle from the reference.

2 is a diagram for explaining the function of the control device 19. As shown in FIG. As shown in FIG. 2 , the control device 19 includes a storage unit 40, a communication unit 41, an operation control unit 42, a calculation unit 43, an acquisition unit 44, a calculation unit 45, and a determination unit 46. ) is provided.

Below, the method of inspecting the rope 14 is demonstrated in detail with reference also to FIG. 3 to FIG. 3 is a flowchart showing an example of the operation of the control device 19.

In the control device 19, it is determined whether or not a start signal for starting the inspection of the rope 14 has been received (S101). For example, inspection of the rope 14 is performed by an elevator maintenance worker. A maintenance worker carries the portable terminal 4 and visits a building equipped with the elevator device 1. The mobile terminal 4 is, for example, a smartphone. The maintenance worker transmits a start signal from the mobile terminal 4 . As another example, the start signal may be transmitted from the operating panel 30 provided in the car 11 . The start signal may be transmitted from the information center 3. When the communication unit 41 receives the start signal, it is judged Yes in S101.

If it is determined as Yes in S101, the operation control unit 42 starts an operation for inspecting the rope 14. Specifically, the operation controller 42 stops the car 11 at the landing 23 on the lowest floor (S102). In the following, an example in which the car 11 stops at each landing 23 on the 1st to 10th floors will be described. That is, the lowest floor is the first floor. The operation control unit 42 stops the car 11 at the position where the detector 24 detects the plate 22-1 in S102.

Next, the operation controller 42 moves the car 11 to the landing 23 on the top floor (S103). As described above, the uppermost layer is the 10th layer. The operation control unit 42. In S103, the car 11 is stopped at the position where the detector 24 detects the plate 22-10.

After the car 11 leaves the landing 23-1, the detector 24 detects the plate 22-2 when the car 11 passes the landing 23-2. Then, when the car 11 passes through the landing 23-3, the detector 24 detects the plate 22-3. Similarly, whenever the car 11 passes through the landing 23, the detector 24 detects the plate 22.

Then, when the car 11 stops at the landing 23-10 in S103, a process for determining the deterioration state of the rope 14 is started (S104). Fig. 4 is a flowchart showing an example of degradation determination processing in S104. The deterioration determination processing may be started immediately after the car 11 leaves the landing 23-1 in S102.

The hoistway 13 includes a plurality of virtually divided sections. This plurality of sections is continuous up and down. The elevator car 11 moves through a plurality of sections. For example, the interval between two plates 22 that are vertically adjacent is one section. If the lowest floor is the first floor and the highest floor is the 10th floor, nine sections exist in the hoistway 13 . Below, the section from the plate 22-n to the plate 22-(n+1) is expressed as section n.

Fig. 4 shows an example in which a series of processes shown in S202 to S208 are performed for each section. First, n = 1 is set in S201. The calculation unit 43 calculates the rotation amount Δθn of the sheave 16 when the car 11 moves through the section n. For example, when the car 11 moves through section 1, the detector 24 detects the plate 22-1 at the starting point of section 1. The rotation angle θ1 of the sheave 16 when the detector 24 detects the plate 22-1 is detected by the encoder 18. The calculation unit 43 acquires the rotation angle θ1 detected by the encoder 18 (S202).

Similarly, when the car 11 moves through section 1, at the end of section 1, the detector 24 detects the plate 22-2. The rotation angle θ2 of the sheave 16 when the detector 24 detects the plate 22-2 is detected by the encoder 18. The calculating part 43 acquires the rotation angle θ2 detected by the encoder 18 (S203). The calculation unit 43 calculates the amount of rotation Δθ1 of the sheave 16 when the car 11 moves through section 1 based on the rotation angle θ1 obtained in S202 and the rotation angle θ2 obtained in S203 (S204).

The acquisition part 44 acquires the diameter D of the groove part of the sheave 16 (S205). Also, the midpoint of the diameter D is a point on the axis of rotation of the sheave 16. As an example, the diameter D is actually measured by a maintenance worker. The maintenance worker inputs the measured value of the diameter D from the portable terminal 4 and transmits it to the control device 19 . The acquisition unit 44 acquires the value received by the communication unit 41 from the portable terminal 4 as the diameter D.

5 is a view showing a state in which the rope 14 is wound around the sheave 16. In the example shown in FIG. 5 , the rope 14 is not in contact with the bottom of the groove formed in the sheave 16 . In this case, the diameter D is the diameter of the portion considered to be the bottom of the groove. Moreover, as shown in FIG. 5, the effective diameter of the sheave 16 is represented by D+d/2+d/2=D+d when d is the diameter of the rope 14.

6 is a diagram showing a measurement example of the diameter D. 6 shows an example of pressing the detector 31 against a portion of the groove formed in the sheave 16 where the rope 14 is not wound. In the example shown in Fig. 6, the diameter D is measured based on the distance L1 between the reference surface and the tip of the detector 31. Fig. 7 is a diagram showing another measurement example of the diameter D. Fig. 7 shows an example of measuring the protruding amount L2 of the rope 14 from the reference plane and deriving the diameter D.

When the diameter D is obtained by the acquisition unit 44, the calculation unit 45 calculates the diameter dn of the rope 14 (S206). The diameter dn is the diameter of a portion of the rope 14 wound around the sheave 16 when the car 11 moves through section n. The calculation part 45 calculates the diameter dn by the following formula.

[number 1]

In formula (1), D' is a reference value for the diameter D of the groove portion of the sheave 16. The reference value D' is previously stored in the storage unit 40. In equation (1), Δθ′n is a reference value for the amount of rotation Δθn of the sheave 16 when the car 11 moves through section n. The reference value Δθ'n is previously stored in the storage unit 40 . Regarding the reference value Δθ'n, a value for each section is stored in the storage unit 40. That is, in the storage unit 40, the reference value Δθ′1 for section 1, the reference value Δθ′2 for section 2, the reference value Δθ′3 for section 3, and the reference value Δθ′9 for section 9 are stored in the storage unit 40. Remembered.

In Equation (1), d'n is a reference value for the diameter dn of the portion of the rope 14 wound around the sheave 16 when the car 11 moves through section n. The reference value d'n is previously stored in the storage unit 40 . Regarding the reference value d'n, a value for each section is stored in the storage unit 40. That is, in the storage unit 40, the reference value d'1 for interval 1, the reference value d'2 for interval 2, the reference value d'3 for interval 3, ..., and the reference value d'9 for interval 9 are stored. Remembered.

As an example, each value measured at the time of installation of the elevator device 1 is stored in the storage unit 40 as a reference value D', a reference value Δθ'n, and a reference value d'n. The reference value D' and the reference value d'n may be design values. Then, the reference value D', the reference value Δθ'n, and the reference value d'n may be updated based on each value measured at the time of repairing the elevator device 1.

The effective diameter of the sheave 16 when the car 11 is moving through section n is D+dn. Therefore, the amount of movement of the car 11 is represented by π(D+dn)×Δθn. Even when the elevator device 1 is installed or the rope 14 is inspected, the distance of section n, that is, the amount of movement of the car 11 does not change. Therefore, the following equation holds. In addition, Formula (1) is derived from the following Formula.

[number 2]

As shown in equation (1), the calculation unit 45, in S206, the reference value D', the reference value Δθ'1, and the reference value d'1 stored in the storage unit 40, and the rotation amount Δθ1 calculated in S204 and Based on the diameter D obtained in S205, the diameter d1 is calculated.

Next, the determination unit 46 determines whether or not the rope 14 has deteriorated based on the diameter dn calculated by the calculation unit 45 (S207). For example, the threshold value ThA for determining deterioration is stored in the storage unit 40 . The determination unit 46 compares the diameter d1 calculated in S206 with the threshold value ThA. The judgment part 46 determines that the rope 14 is degraded, if the diameter d1 computed at S206 is smaller than threshold value ThA. The determination part 46 does not determine that the rope 14 is deteriorating, if the diameter d1 computed in S206 is larger than threshold value ThA.

When degradation determination of the rope 14 is performed in S207, the inspection result regarding section n is stored in the storage unit 40 (S208). As an example, the inspection result includes the information of the diameter d1 calculated in S206. As another example, the determination result in S207 is included in the inspection result.

When a series of processes for a certain section is ended, it is determined whether or not the series of processes has been performed for all sections (S209). If it is determined as No in S209, 1 is added to n (S210). For example, the value of n is 2. This starts the above series of processing for section 2.

That is, in S202, the rotation angle θ2 of the sheave 16 when the detector 24 detects the plate 22-2 is acquired. In S203, the rotation angle θ3 of the sheave 16 when the detector 24 detects the plate 22-3 is obtained. In S204, the calculation unit 43 calculates the amount of rotation Δθ2 of the sheave 16 when the car 11 moves in the section 2.

Further, in S206, the calculator 45 calculates the diameter d2 based on the reference value D', the reference value Δθ'2, and the reference value d'2, the diameter D already obtained, and the amount of rotation Δθ2 calculated in S204. do. In S207, the judgment part 46 determines whether the rope 14 has deteriorated based on the diameter d2 computed by the calculation part 45. For example, if the diameter d2 computed in S206 is smaller than threshold value ThA, the determination part 46 determines that the rope 14 is degraded. In S208, the test results relating to section 2 are stored in the storage unit 40.

Then, for each of the plurality of sections virtually divided, calculation of rotation amount Δθn, calculation of diameter dn, determination of deterioration of the rope 14, and recording of inspection results are performed. The above-described series of processing is performed for all sections, and when a decision is made in S209 of Yes, the degradation determination processing is ended.

If it is an example shown in this embodiment, it can determine that the rope 14 is deteriorating, without requiring additional equipment to the elevator device 1. For this reason, the present elevator system is particularly easy to apply to the elevator apparatus 1 already installed.

The rope 14 deteriorates faster as the number of bends increases. For this reason, deterioration of the rope 14 does not proceed uniformly over the entire length. In the example shown in this embodiment, deterioration of the rope 14 can be determined for every previously set section. For this reason, among the ropes 14, it is possible to easily specify the part where the deterioration progresses quickly.

In this elevator system, after determining Yes in S209, the following operation|movement may be performed.

For example, if it is determined in S207 that the rope 14 has deteriorated in at least one of the sections, the operation control unit 42 may suspend operation of the car 11 thereafter.

As another example, the present elevator system may have a function of notifying the inspection result. For example, when the communication unit 41 receives a start signal from the portable terminal 4 in S101, the communication unit 41 transmits the inspection result to the portable terminal 4. In this way, the inspection result is displayed on the display device 4a of the portable terminal 4 . When the communication part 41 receives the start signal from the operation panel 30 in S101, the communication part 41 may transmit the test result to the operation panel 30. Thereby, the inspection result is displayed on the indicator 30a of the operation panel 30. When the communication unit 41 receives the start signal from the information center 3 via the network 2, the communication unit 41 may transmit the inspection result to the information center 3. In this way, the inspection result is displayed on the display device 3a provided in the information center 3.

The test results transmitted by the communication unit 41 need not include only the test results of a part of the section. For example, the communication unit 41 transmits the inspection result, and displays the determination result of the determination unit 46 for the portion of the rope 14 having the smallest diameter dn calculated in S206 to the indicator 4a, 3a or 30a. may be displayed on

Other functions employable by this elevator system will be described below. An elevator system may be employed combining a plurality of functions shown below.

The control device 19 may further include an arithmetic unit 47 . As described above, the diameter dn calculated in S206 is stored in the storage unit 40 in S208. In the storage unit 40, the diameter dn is accumulated for each inspection. When the diameter dn is calculated in S206, the calculation unit 47 calculates the time change rate of the diameter dn based on the diameter dn calculated this time and the diameter dn calculated in the past. For example, if n = 1, when the diameter d1 is calculated in S206, the calculating part 47 calculates the rate of change with time of the diameter d1 based on the diameter d1 calculated this time and the diameter d1 calculated last time. If n = 2, the calculation unit 47, when the diameter d2 is calculated in S206, calculates the time change rate of the diameter d2 based on the diameter d2 calculated this time and the diameter d2 calculated last time. Similarly, the calculation unit 47 calculates the time change rate of the diameter dn for each of the plurality of sections.

8 is a diagram for explaining the function of the arithmetic unit 47. 8 shows the time change of the diameter of the rope 14. As shown in FIG. 8 , in the period P1 immediately after use of the rope 14 is started, since the initial elongation of the rope 14 occurs, the time change rate of the diameter of the rope 14 increases. In the period P2 after the period P1, the time change rate of the diameter of the rope 14 becomes smaller than the time change rate in the period P1. Then, in the period P3 after the passage of the period P2, the time change rate of the diameter of the rope 14 becomes large again.

The judgment part 46 may determine whether the rope 14 has deteriorated based on the time change rate computed by the calculation part 47. For example, the judgment part 46 determines that the rope 14 is degraded, if the time change rate computed by the calculation part 47 is larger than a specific threshold value ThB. In order to prevent determining that the rope 14 is degraded in the period P1, the determination unit 46 may make a deterioration judgment based on the time change rate of the diameter only when the rope 14 has been used for a certain period or longer. do.

The determination unit 46 may determine that the rope 14 is degraded when the diameter dn calculated in S206 is smaller than the threshold value ThC and the time change rate calculated by the operation unit 47 is larger than the threshold value ThB. The threshold ThC is a value greater than the threshold ThA. In addition, even when the control device 19 includes the calculation unit 47, the judgment unit 46 determines that the rope 14 has deteriorated, if the diameter dn calculated in S206 is smaller than the threshold value ThA.

In this embodiment, an example in which the car 11 is moved from the landing 23 on the lowest floor to the landing 23 on the top floor for the inspection of the rope 14 has been described. This is an example. The operation control unit 42 may move the car 11 from the landing 23 on the uppermost floor to the landing 23 on the lowest floor for inspection of the rope 14 . The operation control unit 42 may move the car 11 only in part of the plurality of sections for the purpose of inspecting the rope 14 . For example, the car 11 may be moved from the landing 23-5 to the landing 23-6, and the rope 14 may be inspected only for the section 5.

In this embodiment, an example in which the calculation unit 43 calculates the amount of rotation Δθn of the sheave 16 when the car 11 moves upward has been described. This is a good example. In the example shown in this embodiment, the car 11 and the balance weight 12 are suspended by the rope 14. The tension of the portion of the rope 14 extending from the sheave 16 to the car 11 side and the tension of the portion extending to the counterweight 12 side are the weight of the car 11 and the weight of the counterweight 12 If they don't match, they won't be the same. When there is a difference between the two tensions, the portion of the rope 14 sent out from the sheave 16 causes expansion and contraction due to the difference.

In the example shown in this embodiment, the position of the car 11 is detected by the detector 24 provided in the car 11. For this reason, when the car 11 moves downward, the detector 24 is affected by the expansion and contraction. By calculating the rotation amount Δθn based on the rotation angle θn detected when the car 11 moves upward, the rotation amount Δθn can be calculated without being affected by the expansion and contraction.

In this embodiment, an example in which the plate 22 and the detector 24 are provided as means for detecting the position of the car 11 has been described. As the corresponding means, a detector for continuously detecting the absolute position of the car 11 may be provided. As another example, the governor 25 may be employed as the means. In this case, a calculation unit 48 is further provided in the control device 19 . The calculation unit 48 calculates the position of the car 11 based on the rotation angle of the governor sheave 26 detected by the encoder 29. In either example, each of the plurality of sections is specified based on the position detected by the means.

The elevator device 1 may further include a thermo-hygrometer 32 . In this case, the control device 19 further includes a correction unit 49 . The thermo-hygrometer 32 measures the temperature and humidity of the hoistway 13 . The correction unit 49 corrects the diameter dn calculated by the calculation unit 45 in S206 based on the temperature and humidity measured by the thermo-hygrometer 32 . Based on the diameter dn corrected by the correction part 49, the determination part 46 determines whether the rope 14 has deteriorated in S207.

9 is a diagram for explaining the function of the correction unit 49. The solid line shown in FIG. 9 is the same as the solid line shown in FIG. 8 . The broken line shown in FIG. 9 shows the time change of the diameter of the rope 14 at the time of taking temperature and humidity into consideration. Fibers such as hemp provided in the center of the rope 14 absorb moisture. For this reason, when the humidity increases, the diameter of the rope 14 increases. In addition, the steel strands of the rope 14 expand when the temperature rises. For this reason, the diameter of the rope 14 tends to increase as the temperature and humidity increase, and decrease as the temperature and humidity decrease. The correcting unit 49 corrects the diameter dn calculated by the calculating unit 45 according to this tendency. When the control device 19 includes the correcting unit 49, degradation determination in consideration of temperature and humidity becomes possible. For this reason, the determination accuracy can be further improved.

In this embodiment, an example in which the rope 14 is inspected when the elevator apparatus 1 is not normally serviced has been described. This is a good example. The inspection of the rope 14 may be carried out during normal service. In this case, the control device 19 further includes a detection unit 50 .

In the normal service, driving is performed to deliver passengers to the destination floor. As an example, consider a case where the car 11 stops at the landing 23-1 in S102 and moves to the landing 23-10 in S103 in response to a call registered by a passenger. When the car 11 stops at the landing 23-1 in S102, the door 33 of the car 11 is opened. At this time, the load W1 of the car 11 before the door 33 is opened is measured by the weighing device 21 . After that, when the door 33 is closed, the carrying load W2 of the car 11 after the door 33 is closed is measured by the weighing device 21 . The detection unit 50 detects a difference between the applied load W1 and the applied load W2.

When a passenger gets off the car 11 at the landing 23-1, the loading load of the car 11 changes. Similarly, when a passenger gets into the car 11 at the landing 23-1, the loading load of the car 11 changes. Since the car 11 is suspended by the rope 14, when the loading load of the car 11 changes, the position of the car 11 changes. For this reason, the calculation unit 43 does not need to calculate the amount of rotation Δθn when the difference detected by the detection unit 50 exceeds a specific threshold value ThD. That is, when the difference detected by the detection part 50 exceeds the threshold value ThD, deterioration determination of the rope 14 is not performed. Also, the threshold value ThD is previously stored in the storage unit 40 .

As another example, the control device 19 may further include a correction unit 51 in addition to the detection unit 50 . As described above, the detection unit 50 detects the difference between the applied load W1 and the applied load W2. The correcting unit 51 corrects the amount of rotation Δθn calculated by the calculating unit 43 according to the difference detected by the detecting unit 50 . For example, the correction unit 51 calculates a correction value according to the difference detected by the detecting unit 50 when the carrying load W1 is greater than the carrying load W2 when the car 11 moves upward. It is added to the rotation amount Δθn calculated by The correction unit 51 calculates the correction value according to the difference detected by the detection unit 50 by the calculation unit 43 when the load W2 is greater than the load W1 when the car 11 moves upward. It is subtracted from the amount of rotation Δθn.

Further, after the deterioration determination process is finished, the operation control unit 42 may perform an operation to stop the car 11 at a specific confirmation position. The checking position is a position for a maintenance worker to visually check a specific part of the rope 14 from above the car 11. For example, when the hoisting machine 15 is disposed at the top of the hoistway 13, maintenance personnel may not be able to visually see the portion of the rope 14 wound around the sheave 16. In this case, the maintenance worker transmits, for example, a confirmation signal for starting the driving from the portable terminal 4.

As an example, in the deterioration judgment process, consider the case where it is determined in S207 that the rope 14 is degraded when n=3. In this case, when the communication unit 41 receives the confirmation signal, the operation control unit 42 moves the part of the rope 14 that is wound around the sheave 16 when the car 11 moves through section 3 to the car 11. The car 11 is stopped so that it can be visually recognized from above. The operation control unit 42 may stop the car 11 so that a portion of the rope 14 having the smallest diameter dn calculated by the calculation unit 45 can be visually recognized from above the car 11. Thereby, the maintenance worker can easily confirm the deterioration state of the rope 14. Moreover, the position for visually recognizing a specific part of the rope 14 from the pit of the hoistway 13 may be sufficient as a confirmation position.

In this embodiment, an example in which the acquisition unit 44 acquires the measured value by the maintenance worker as the diameter D has been described. The acquisition unit 44 may acquire a value other than the measured value as the diameter D by the maintenance worker. As an example, a specific non-service section is set above the stop position of the car 11 on the top floor or below the stop position of the car 11 on the lowest floor. The out-of-service section is a section in which the car 11 does not move in normal service.

Fig. 10 is a flowchart showing an example of obtaining the diameter D. The operation control unit 42 moves the non-service section to the car 11 (S301). In the following description, the out-of-service section is denoted as section 0 (n=0). Next, the calculation unit 43 calculates the amount of rotation Δθ0 of the sheave 16 when the car 11 moves in the out-of-service section (S302). In addition, the method of detecting the position of the car 11 may be any method.

Next, the acquisition part 44 acquires the diameter D of the groove part of the sheave 16 by the following formula (S303). Equation (3) is derived from equation (2) as well as equation (1).

[number 3]

As described above, D' is a reference value for the diameter D of the groove portion of the sheave 16. In equation (3), Δθ′0 is a reference value for the amount of rotation Δθ0 of the sheave 16 when the car 11 moves in the out-of-service section. The reference value Δθ'0 is previously stored in the storage unit 40 . In Equation (3), d'0 is a reference value for the diameter d0 of the portion of the rope 14 wound around the sheave 16 when the car 11 moves through the out-of-service section. The reference value d'0 is previously stored in the storage unit 40 .

As described above, in normal service, the car 11 does not move outside the service section. For this reason, the portion of the rope 14 that is wound around the sheave 16 when the car 11 moves through the out-of-service section is hardly deteriorated compared to other portions. For this reason, the acquisition unit 44 sets d0 = d'0 in Expression (3). That is, in S303, the acquisition unit 44 calculates the diameter D based on the reference value D', the reference value Δθ'0, and the reference value d'0 stored in the storage unit 40, and the amount of rotation Δθ0 calculated in S302. calculate And the calculation part 45 calculates the diameter dn of the rope 14 in S206 based on the diameter D acquired by the acquisition part 44.

Fig. 11 is a flow chart showing another acquisition example of the diameter D. In the example shown in FIG. 11 , the control device 19 further includes an arithmetic unit 52 and a specific unit 53 . As described above, if Yes is determined in S101, the car 11 moves from the landing 23-1 on the lowest floor to the landing 23-10 on the top floor. When the car 11 stops at the landing 23-10, first, n = 1 is set in S401. Similar to S204, the calculation unit 43 calculates the amount of rotation Δθn of the sheave 16 when the car 11 moves through section n (S402). If n = 1, the calculation part 43 calculates the amount of rotation Δθ1.

Next, the calculation unit 52 calculates an increase rate from the reference value Δθ'n of the amount of rotation Δθn calculated in S401 (S403). If n=1, the calculating part 52 calculates the increase rate of rotation amount Δθ1 from the reference value Δθ′1 in S403. When calculation of the increase rate is performed for a certain section, it is determined whether the corresponding increase rate has been calculated for all sections (S404). If it is determined as No in S404, 1 is added to n (S405). For example, the value of n is 2. With this, the rate of increase from the reference value Δθ′2 of the rotation amount Δθ2 is calculated in S403. Then, for each of the plurality of sections, an increase rate is calculated in S403.

If it is determined as Yes in S404, the specifying unit 53 specifies, among the plurality of sections, a section having the smallest increase rate calculated in S403 as a reference section (S406). In the following description, the reference section specified by the specification unit 53 is expressed as section m (n=m). When the reference section is specified by the specification unit 53, the acquisition unit 44 acquires the diameter D of the groove portion of the sheave 16 by the following equation (S407). Equation (4) is derived from Equation (2), similarly to Equation (3).

[Number 4]

In equation (4), Δθ'm is a reference value for the amount of rotation Δθm of the sheave 16 when the car 11 moves through the reference section. In Equation (4), d'm is a reference value for the diameter dm of the portion of the rope 14 wound around the sheave 16 when the car 11 moves through the reference section.

Among the ropes 14, the portion wound around the sheave 16 when the car 11 moves through the reference section is the portion where deterioration has not progressed the most. For this reason, the acquisition unit 44 assumes that dm = d'm in Expression (4). That is, FIG. 11 shows an example in which the diameter D of the groove portion of the sheave 16 is acquired using the portion of the rope 14 in which deterioration has not progressed the most. Based on the reference value D', the reference value Δθ'm, and the reference value d'm stored in the storage unit 40, and the amount of rotation Δθm calculated by the calculation unit 43, in S407, the acquisition unit 44 obtains, Calculate the diameter D. And the calculation part 45 calculates the diameter dn of the rope 14 in S206 based on the diameter D acquired by the acquisition part 44.

As another example, the acquisition unit 44 may calculate the wear amount of the groove portion of the sheave 16 based on the cumulative number of rotations of the sheave 16, and may acquire the diameter D from the calculation result. The cumulative number of revolutions of the sheave 16 from the time of installation or repair of the elevator device 1 is stored in the storage unit 40 . The acquisition unit 44 may consider the tension of the rope 14, the shape of the groove, and the like when calculating the wear amount of the groove portion of the sheave 16.

In addition, when a value other than the measured value by the maintenance worker is adopted as the diameter D, if it is determined in S207 that the rope 14 has deteriorated in all of the plurality of sections, the determination unit 46 sheave ( It may be determined that the abrasion of the groove portion in 16) is progressing.

In this embodiment, an example in which the control device 19 of the elevator device 1 includes the inspection function of the rope 14 has been described. The inspection function of the rope 14 may be provided in another inspection terminal. For example, the portable terminal 4 may be equipped with each part shown by reference numerals 40 to 53. Each part indicated by reference numerals 40 to 53 may be provided in a server (not shown) of the information center 3.

In this embodiment, each part indicated by the reference numerals 40 to 53 indicates the function that the control device 19 has. 12 is a diagram showing an example of hardware resources of the control device 19 . The control device 19 includes a processing circuit 60 including, for example, a processor 61 and a memory 62 as hardware resources. The function of the storage unit 40 is realized by the memory 62. As the memory 62, a semiconductor memory or the like can be employed. The control device 19 realizes the functions of the respective parts indicated by reference numerals 41 to 53 by executing the programs stored in the memory 62 by the processor 61.

FIG. 13 is a diagram showing another example of the hardware resources of the control device 19. As shown in FIG. In the example shown in FIG. 13 , the control device 19 includes a processor 61 , a memory 62 , and a processing circuit 60 including dedicated hardware 63 , for example. 13 shows an example in which a part of the functions of the control device 19 are realized by dedicated hardware 63. All of the functions of the control device 19 may be realized by dedicated hardware 63 . As the dedicated hardware 63, a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof can be employed.

Hardware resources of the inspection device are the same as those shown in FIG. 12 or FIG. 13 . For example, the testing device includes, as hardware resources, a processing circuit including a processor and a memory. The inspection apparatus realizes the functions of each part indicated by reference numerals 41 to 53 by executing the program stored in the memory by the processor. As a hardware resource, the inspection device may include a processing circuit including a processor, memory, and dedicated hardware. Part or all of the functions of the inspection apparatus may be realized by dedicated hardware.

The elevator system according to the present disclosure can be applied to a system in which an elevator car is suspended by a rope.

1: elevator device 2: network
3: information center 3a: indicator
4: mobile terminal 4a: indicator
11: elevator car 12: counterweight
13: hoistway 14: rope
15: traction machine 16: sheave
17: motor 18: encoder
19: control unit 20: machine room
21: scale device 22: plate
23: platform 24: detector
25: governor 26: governor sheave
27: speed control rope 28: connecting member
29: encoder 30: control panel
30a: indicator 31: detector
32: thermo-hygrometer 33: door
40: storage unit 41: communication unit
42: operation control unit 43: operation unit
44: Acquisition unit 45: Calculation unit
46: judgment unit 47: calculation unit
48: calculation unit 49: correction unit
50: detection unit 51: correction unit
52: calculation unit 53: specific unit
60: processing circuit 61: processor
62: memory 63: dedicated hardware

Claims (26)

An elevator car moving through the hoistway;
A rope for hanging the elevator car;
A sheave around which the rope is wound;
an electric motor for rotating the sheave;
first calculation means for calculating a rotational amount of the sheave when the car moves in a specific section of the hoistway;
storage means for storing a first reference value, a second reference value, and a third reference value;
Based on the first reference value, the second reference value, and the third reference value, the diameter of the groove portion of the sheave, and the rotation amount calculated by the first calculation means, the elevator car of the rope moves in the section second calculation means for calculating the diameter of the portion wound around the sheave when the
determining means for determining whether or not the rope is deteriorated based on the diameter calculated by the second calculating means;
The first reference value is a reference value for the diameter of the groove portion of the sheave,
The second reference value is a reference value for the diameter of the portion of the rope,
The third reference value is a reference value for the amount of rotation of the sheave when the car moves in the section. The method of claim 1,
Further comprising a third calculation means for calculating a time change rate of the diameter calculated by the second calculation means;
The elevator system according to claim 1, wherein the determination means determines whether the rope is deteriorated based on the time change rate calculated by the third computation means. According to claim 1 or claim 2,
Further comprising detection means for detecting the position of the car;
The elevator system wherein the section is specified based on the position detected by the detection means. The method of claim 3,
The detecting means is
A plate arranged to match the height of the platform where the elevator car stops;
An elevator system provided in the car and having a detector for detecting the plate. The method of claim 3,
The elevator system of claim 1 , wherein the detecting means includes a detector for continuously detecting the absolute position of the car. The method of claim 3,
The detecting means is
A speed control rope connected to the elevator car;
A governor sheave on which the governor rope is wound;
An encoder for detecting a rotational angle of the governor sheave;
and a fifth calculation means for calculating the position of the car based on the rotation angle detected by the encoder. According to claim 1 or claim 2,
Further comprising an operation control means for stopping the car at a specific confirmation position when it is determined by the determination means that the rope is deteriorated;
The confirmation position is set in advance as a position for visually recognizing the portion of the rope from the pit of the hoistway or from above the car. An elevator car that moves through a hoistway including a plurality of virtually divided sections;
A rope for hanging the elevator car;
A sheave around which the rope is wound;
an electric motor for rotating the sheave;
first calculation means for calculating a rotational amount of the sheave when the car moves through each of the plurality of sections;
storage means for storing a first reference value and a second reference value and a third reference value for each of the plurality of sections;
For each of the plurality of sections, the first reference value, the second reference value and the third reference value for the target section, the diameter of the groove portion of the sheave, and the elevator car calculated by the first calculation means Second calculation means for calculating a diameter of a portion of the rope that is wound around the sheave when the car moves through the corresponding target section, based on the amount of rotation of the sheave when moving the corresponding target section;
determining means for determining whether or not the rope is deteriorated based on the diameter calculated by the second calculating means;
The first reference value is a reference value for the diameter of the groove portion of the sheave,
The second reference value for each of the plurality of sections is a reference value for the diameter of a portion of the rope that is wound around the sheave when the car moves through each of the plurality of sections,
The third reference value for each of the plurality of sections is a reference value for the amount of rotation of the sheave when the car moves through each of the plurality of sections. The method of claim 8,
For each of the plurality of sections, a third calculating means for calculating a time change rate of the diameter calculated by the second calculating means is further provided;
The elevator system of claim 1 , wherein the determining means determines whether or not the rope is deteriorated based on the time change rate calculated by the third calculating means. According to claim 8 or claim 9,
Further comprising detection means for detecting the position of the car;
Each of the plurality of sections is specified based on the position detected by the detection means. According to claim 8 or claim 9,
An elevator system further comprising an indicator for displaying a determination result of the determination means for the portion of the rope having the smallest diameter calculated by the second calculation means. According to claim 8 or claim 9,
further equipping means of acquisition;
The first calculation means calculates the amount of rotation of the sheave when the car moves in a specific non-service section,
the storage means stores a second reference value and a third reference value for the out-of-service section;
The acquiring means calculates the first reference value, the second reference value and the third reference value for the out-of-service section, and the sheave when the car moves through the out-of-service section, calculated by the first calculation means. Obtaining the diameter of the groove of the sheave based on the amount of rotation of
The non-service section is an elevator system that is above the stop position of the top floor or below the stop position of the lowest floor. According to claim 8 or claim 9,
fourth calculation means for calculating an increase rate from the third reference value of the amount of rotation calculated by the first calculation means for each of the plurality of sections;
Specifying means for specifying, as a reference interval, an interval in which the increase rate calculated by the fourth calculation means is the smallest among the plurality of intervals;
Based on the first reference value, the second reference value and the third reference value for the reference section, and the amount of rotation of the sheave when the car moves in the reference section, calculated by the first calculation means , an elevator system further comprising acquisition means for acquiring the diameter of the groove portion of the sheave. The method of claim 10,
The detecting means is
A plate arranged to match the height of the platform where the elevator car stops;
An elevator system provided in the car and having a detector for detecting the plate. The method of claim 10,
The elevator system of claim 1 , wherein the detecting means includes a detector for continuously detecting the absolute position of the car. The method of claim 10,
The detecting means is
A speed control rope connected to the elevator car;
A governor sheave on which the governor rope is wound;
An encoder for detecting a rotational angle of the governor sheave;
and a fifth calculation means for calculating the position of the car based on the rotation angle detected by the encoder. According to claim 8 or claim 9,
Further comprising an operation control means for stopping the elevator car at a specific confirmation position,
The confirmation position is set in advance as a position for visually recognizing a part of the rope having the smallest diameter calculated by the second calculation means from above the pit of the hoistway or the car. The method according to any one of claims 1, 2, 8, or 9,
An elevator system further comprising acquisition means for obtaining a diameter of the groove portion of the sheave by calculating an amount of wear of the groove portion of the sheave based on the cumulative number of revolutions of the sheave. The method according to any one of claims 1, 2, 8, or 9,
The elevator system of claim 1 , wherein the first calculation unit calculates the amount of rotation of the sheave when the car moves upward. The method according to any one of claims 1, 2, 8, or 9,
Further comprising a scale device for measuring the load of the elevator car,
The first calculation means determines, when the difference between the load measured by the weighing device before the door of the car is opened and the loaded load measured by the weighing device after the door is closed exceeds a specific threshold value, An elevator system in which the amount of rotation of the sheave is not calculated even if the car moves after the door is closed. The method according to any one of claims 1, 2, 8, or 9,
A scale device for measuring the loaded load of the elevator car;
Detecting means for detecting a difference between a load measured by the weighing device before the door of the car is opened and a loaded load measured by the weighing device after the door is closed;
The elevator system further includes first correcting means for correcting the amount of rotation calculated by the first calculating means according to the difference detected by the detecting means. The method according to any one of claims 1, 2, 8, or 9,
a thermo-hygrometer for measuring the temperature and humidity of the hoistway;
An elevator system further comprising a second correction means for correcting the diameter calculated by the second calculation means based on the temperature and humidity measured by the thermo-hygrometer. The method according to any one of claims 1, 2, 8, or 9,
and an operation control means for stopping the operation of the car when it is determined by the determination means that the rope is deteriorated. The method according to any one of claims 1, 2, 8, or 9,
operation control means for moving the car and calculating the amount of rotation of the sheave with the first calculation means when receiving a specific start signal from an information center through a network;
The elevator system further comprising communication means for transmitting the determination result by the determination means to the information center. An elevator car moving through the hoistway;
A rope for hanging the elevator car;
A sheave around which the rope is wound;
In the elevator device having a motor for rotating the sheave, as an inspection terminal for inspecting the rope,
first calculation means for calculating a rotational amount of the sheave when the car moves in a specific section of the hoistway;
storage means for storing a first reference value, a second reference value, and a third reference value;
Based on the first reference value, the second reference value, and the third reference value, the diameter of the groove portion of the sheave, and the rotation amount calculated by the first calculation means, the elevator car of the rope moves in the section second calculation means for calculating the diameter of the portion wound around the sheave when the
determining means for determining whether or not the rope is deteriorated based on the diameter calculated by the second calculating means;
The first reference value is a reference value for the diameter of the groove portion of the sheave,
The second reference value is a reference value for the diameter of the portion of the rope,
The third reference value is a reference value for the amount of rotation of the sheave when the car moves in the section. An elevator car that moves through a hoistway including a plurality of virtually divided sections;
A rope for hanging the elevator car;
A sheave around which the rope is wound;
In the elevator device having a motor for rotating the sheave, as an inspection terminal for inspecting the rope,
first calculation means for calculating a rotational amount of the sheave when the car moves through each of the plurality of sections;
storage means for storing a first reference value and a second reference value and a third reference value for each of the plurality of sections;
For each of the plurality of sections, the first reference value, the second reference value and the third reference value for the target section, the diameter of the groove portion of the sheave, and the elevator car calculated by the first calculation means Second calculation means for calculating a diameter of a portion of the rope that is wound around the sheave when the car moves through the corresponding target section, based on the amount of rotation of the sheave when moving the corresponding target section;
determining means for determining whether or not the rope is deteriorated based on the diameter calculated by the second calculating means;
The first reference value is a reference value for the diameter of the groove portion of the sheave,
The second reference value for each of the plurality of sections is a reference value for the diameter of a portion of the rope that is wound around the sheave when the car moves through each of the plurality of sections,
The third reference value for each of the plurality of sections is a reference value for the amount of rotation of the sheave when the car moves through each of the plurality of sections.

Images