Main rope inspection method for elevator

Abstract

The present invention improves the inspection workability of the main rope of a machine roomless elevator. In a main rope inspection method for an elevator in which a traction machine (40) is arranged at the top of a hoistway (1), the method comprises: a step of stopping a car (10) at a reference layer; a step of adding inspection mark information (M2) to an inspection position of a main rope (30) in the real world through smart glasses (100) and displaying it in an overlapping manner while the car (10) is stopped at the reference layer; a step of moving the car (10) so that the car (10) and the inspection position of the main rope (30) are close to each other, while continuing to track while observing the moving inspection mark information; a step of stopping the car (10) when a line (L2) connecting the smart glasses (100) and the inspection position of the main rope (30) to which the inspection mark information (M2) is added is close to horizontal; and a step of inspecting the vicinity of the inspection mark information (M2) as the inspection position of the main rope (30) while the car (10) is stopped.

Description

Technical Field

[0001] The invention relates to a method for inspecting a main rope of an elevator. Background Art

[0002] The elevator car and counterweight are connected by a main rope and suspended in the hoistway via a pulley. The main rope is bent in the sheave. Since the elevator car stops at the reference layer frequently, the load on the part of the main rope that is bent by the sheave is too large when it stops at the reference layer. When inspecting the main rope, it is necessary to focus on the bent part. Since the maintenance worker rides on the car and checks the main rope while moving the car, it is difficult to determine the bent part of the main rope. Therefore, a technology has been proposed to provide a marking device on a traction machine arranged in a pit (bottom) of the hoistway, and use the device to mark the two ends of the bent part of the main rope to determine the bent part of the main rope. Such technology is described in Patent Document 1, for example. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2014-156289 Summary of the invention Technical problem to be solved by the invention

[0004] In order to spray paint and mark the main rope in the marking device, maintenance such as replenishing the paint and cleaning the spraying part is required. Since the marking device is installed on the traction machine configured in the pit (bottom) of the hoistway, the maintenance worker can go down to the pit of the hoistway to perform the operation.

[0005] Among elevators, there are machine room-less elevators that do not require a machine room on the roof by miniaturizing the traction machine and the control device and installing them in the hoistway. In the machine room-less elevator, the traction machine is installed at the top of the hoistway. In the above-mentioned machine room-less elevator, when determining the curved portion of the main rope, it is necessary to mark the main rope located at the top of the hoistway. In the case where a marking device is provided on the traction machine at the top of the hoistway using the technology described in Patent Document 1, maintenance workers may not be able to easily perform maintenance such as replenishing paint and cleaning the spraying part. Therefore, in the machine room-less elevator in which the traction machine is installed at the top of the hoistway, it is difficult to determine the curved portion of the main rope. In the technology described in Patent Document 1, in the machine room-less elevator in which the traction machine is installed at the top of the hoistway, the case of determining the curved portion of the main rope is not considered.

[0006] An object of the present invention is to solve the above-mentioned technical problems and to provide a technology for improving the operability of determining the curved portion of the main rope in a machine room-less elevator in which a traction machine is installed at the top of the hoistway. Technical means for solving technical problems

[0007] In order to achieve the above object, the present invention relates to a main rope inspection method for a machine room-less elevator, wherein a traction machine is provided at the top of a hoistway, and a bent portion of a main rope connecting a car and a counterweight and hanging on a rope wheel of the traction machine is inspected, and the method is characterized by comprising: The process of moving the car to an arbitrary position and stopping it; A step of adding inspection mark information to the inspection position of the main rope in the real world through the smart glasses and displaying it in an overlapping manner while the car is stopped at an arbitrary position; The step of moving the car so that the inspection position of the car and the main rope are close to each other, and continuing the tracking while observing the moving inspection mark information; A step of stopping the car when a line connecting the smart glasses and the inspection location of the main rope to which the inspection mark information is added approaches horizontality; and A step of inspecting the vicinity of the inspection mark information as an inspection site of the main rope while the car is stopped. Effects of the Invention

[0008] According to the present invention, in a machine room-less elevator in which a hoisting machine is installed at the top of a hoistway, it is possible to improve the workability of determining the bent portion of the main rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a diagram showing the overall structure of an elevator in a state where the car is stopped at an arbitrary position (reference floor). Figure 2 It is a system configuration diagram showing an elevator according to an embodiment of the present invention. Figure 3 This is a flowchart showing a method for inspecting a main rope according to an embodiment of the present invention. Figure 4 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed from the maintenance worker 90 in a state where the track mark information M1 is added to the mark 22 of the counterweight 20 in the real world. Figure 5 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed from the maintenance worker 90 when the mark 22 of the counterweight 20 in the real world is close to the front of the maintenance worker 90 . Figure 6 This is a diagram showing a state in which the car 10 is stopped in a state in which the mark 22 of the counterweight 20 comes near the front of the maintenance worker 90 . Figure 71 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed by the maintenance worker 90 in a state where the inspection mark information M2 is added to the inspection location of the main rope 30 in the real world. Figure 8 This is a diagram showing an example of the display unit 100a of the smart glasses 100 viewed by the maintenance worker 90 regarding the inspection mark information M2 immediately after the hoisting machine 40 is operated. Fig. 9 1 is a diagram showing an example of the display unit 100a of the smart glasses 100 viewed by the maintenance worker 90 regarding the inspection mark information M2 in the middle of operating the hoisting machine 40. Fig.10 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed from the maintenance worker 90 in a state where the inspection location of the main rope 30 comes near the front of the maintenance worker 90 . Fig.11 This is a diagram showing a state in which the maintenance worker 90 continues to track the movement of the inspection mark information M2 attached to the inspection location of the main rope 30 through the smart glasses 100 . Fig.12 This is a diagram showing a state in which the inspection mark information M2 added to the inspection location of the main rope 30 is close to the front of the maintenance worker 90. DETAILED DESCRIPTION

[0010] The present invention is directed to a machine roomless elevator in which a traction machine is arranged at the top of a hoistway. Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. For the same elements, the same reference numerals are assigned in principle in all the drawings. In addition, for parts having the same functions, the description is omitted. The structure described below is only an embodiment, and the implementation method involved in the present invention is not intended to be limited to the following specific methods.

[0011] Figure 1 This is an overall structural diagram of an elevator showing a state where the car is stopped at an arbitrary position (reference floor). The hoistway 1 includes: a car 10 that moves in the up-down direction in the hoistway 1, a counterweight 20 that moves in the up-down direction relative to the car 10, a traction machine 40 that raises and lowers the car 10 and the counterweight 20 via the main rope 30, and a control device 50 that controls the traction machine 40 according to the target floor button in the car 10. The control device 50 is electrically connected to the car 10 via the accompanying cable 60, and is electrically connected to the traction machine 40 via the communication line 70. The car 10 and the counterweight 20 are connected by the main rope 30.

[0012] The hoisting machine 40 of this embodiment is installed at the top of the hoistway 1. The hoisting machine 40 includes a sheave 41 on which the main rope 30 is hung, and the motor rotates the sheave 41 to move the car 10 and the counterweight 20 up and down.

[0013] Both ends of the main rope 30 are fixed to the upper part of the hoistway 1. One end of the main rope 30 extends downward from the top, is hung on the pulley 11 at the bottom of the car 10, and is hung on the sheave 41 of the traction machine 40. The other end of the main rope 30 extends downward from the top, is hung on the pulley 21 at the upper part of the counterweight 20, and is hung on the sheave 41 of the traction machine 40.

[0014] In an elevator, during non-operating hours such as at night, the car 10 is stopped at a reference floor. The reference floor is any position such as the 1st floor or the 2nd floor. Since the elevator car 10 stops at the reference floor frequently, when it stops at the reference floor, the load on the portion of the main rope 30 that is bent by the sheave 41 is too large. When inspecting the main rope 30, it is necessary to focus on inspecting the bent portion hanging on the sheave 41. The following describes a method for determining the bent portion of the main rope 30 (the inspection portion of the main rope 30).

[0015] Figure 2 1 is a system structure diagram of an elevator according to an embodiment of the present invention. When determining the bent portion of the main rope 30 caused by the sheave 41 (the inspection portion of the main rope 30), smart glasses 100 are used in this embodiment. Smart glasses 100 are glasses-type wearable terminals worn on the head of the maintenance worker 90.

[0016] The smart glasses 100 are composed of a transparent lens unit and a display unit overlapped, and digital information is added to the real world actually seen. The smart glasses 100 of this embodiment include: a marking control unit 101, which overlaps and displays marking information as digital information on the real world; a marking track storage unit 102, which stores the marked track according to the lifting action of the car 10 or the counterweight 20; and an elevator control information acquisition unit 103, which acquires the elevator control information of the control device 50 via the elevator control information sharing unit 12 of the car 10.

[0017] The control device 50 includes an elevator control unit 51 for controlling the entire elevator, such as controlling the hoisting machine 40 .

[0018] The car 10 includes an elevator control information sharing unit 12 that shares elevator control information between the elevator control unit 51 of the control device 50 and the elevator control information acquisition unit 103 of the smart glasses 100. The elevator control information acquisition unit 103 and the elevator control information sharing unit 12 are connected wirelessly.

[0019] The maintenance worker 90 carries the information terminal device 110 and is connected to the elevator control information sharing unit 12 by wireless. The maintenance worker 90 uses the information terminal device 110 to instruct the car 10 to move or stop.

[0020] Figure 3 This is a flowchart showing a method for inspecting a main rope according to an embodiment of the present invention. Figure 4 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed from the maintenance worker 90 in a state where the track mark information M1 is added to the mark 22 of the counterweight 20 in the real world. Figure 5 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed from the maintenance worker 90 when the mark 22 of the counterweight 20 in the real world is close to the front of the maintenance worker 90 . Figure 6 This is a diagram showing a state in which the car 10 is stopped in a state in which the mark 22 of the counterweight 20 comes near the front of the maintenance worker 90 .

[0021] When inspecting the main rope 30, the maintenance worker 90 needs to ride on the car 10. The maintenance worker 90 uses the information terminal device 110 to instruct to move the car 10 to a position where the maintenance worker 90 can ride on the car 10 from the elevator landing. After receiving the information from the information terminal device 110, the elevator control unit 51 controls the traction machine 40 to move the car 10 to a position where the maintenance worker 90 can ride on the car 10 from the elevator landing. Then, the maintenance worker 90 gets on the car 10 from the elevator hall (step S301: a process in which the maintenance worker 90 gets on the car 10).

[0022] Next, the maintenance worker 90 uses the information terminal device 110 while sitting on the car 10 to instruct the car 10 to stop at an arbitrary position in such a manner that the counterweight 20 is located upward. After receiving the information from the information terminal device 110, the elevator control unit 51 controls the traction machine 40 to stop the car 10 at an arbitrary position in such a manner that the counterweight 20 is located upward (step S302: a process of stopping the car 10 at an arbitrary position in such a manner that the counterweight 20 is located upward while the maintenance worker 90 is sitting on the car 10). The counterweight is located upward, and the car 10 is stopped at an arbitrary position as shown in FIG. Figure 1 shown.

[0023] The maintenance worker 90 observes the real world through the smart glasses 100, that is, the mark 22 of the counterweight 20 ( Figure 1After receiving the instruction from the maintenance worker 90, the mark control unit 101 of the smart glasses 100 adds the track mark information M1 to the position of the mark 22 of the counterweight 20 in the real world, and displays it in an overlapping manner on the display unit 100a (step S303: the process of adding the track mark information M1 to the mark of the counterweight 20 in the real world through the smart glasses 100 and displaying it in an overlapping manner).

[0024] like Figure 1 As shown, the maintenance worker 90 riding on the car 10 observes the mark 22 of the counterweight 20 through the smart glasses 100. Figure 4 As shown, on the display unit 100a of the smart glasses 100, the counterweight 20, the pulley 21, the mark 22, and the main rope 30 are displayed as the real world. Then, when the portion of the display unit 100a where the mark 22 is displayed is touched, the track mark information M1 is displayed superimposed in the real world. In this embodiment, on the display unit 100a of the smart glasses 100, the cross-shaped track mark information M1 is superimposed at the mark 22 of the counterweight 20.

[0025] return Figure 3 , the maintenance worker 90 uses the information terminal device 110 to instruct the car 10 and the counterweight 20 to move in a direction close to each other. After receiving the instruction from the maintenance worker 90, the elevator control unit 51 operates the traction machine 40 to move the car 10 and the counterweight 20 in a manner close to each other. At this time, the elevator control information acquisition unit 103 of the smart glasses 100 obtains the information of the operation of the traction machine 40 through the elevator control information sharing unit 12, and the mark control unit 101 starts the mark track storage unit 102.

[0026] The maintenance worker 90 continues tracking by observing the track mark information M1 displayed on the mark 22 of the counterweight 20 through the smart glasses 100, and instructs the car to stop when the mark 22 of the counterweight 20 comes near the front of the maintenance worker 90 (refer to Figure 6 ). In other words, the car 10 is stopped when the line L1 connecting the smart glasses 100 and the mark 22 of the counterweight 20 is close to horizontal. After receiving the instruction from the maintenance worker 90, the elevator control unit 51 stops the traction machine 40 (step S304: the car 10 is moved in the direction in which the car 10 and the counterweight 20 are approaching each other, and the smart glasses 100 continue to track while observing the track mark information M1 overlapping and displayed at the mark 22 of the counterweight 20, and the car is stopped when the line L1 connecting the smart glasses 100 and the mark 22 of the counterweight 20 is close to horizontal).

[0027] When car 10 is Figure 6When the maintenance worker 90 stops at the position shown in FIG. 1 , the line of sight (the line L1 connecting the smart glasses 100 and the mark 22 of the counterweight 20) of the maintenance worker 90 through the smart glasses 100 becomes horizontal, and the maintenance worker 90 observes the mark 22 of the counterweight 20 through the smart glasses 100 (refer to FIG. 1 ). Figure 5 ).

[0028] The elevator control information acquisition unit 103 of the smart glasses 100 acquires the information of the stop of the traction machine 40 via the elevator control information sharing unit 12, and the mark control unit 101 stores the movement mode (track) of the track mark information M1 in the mark track storage unit 102 (step S305: the process of storing the movement mode (track) of the track mark information M1). The smart glasses 100 of this embodiment are configured to be able to acquire the information of the elevator, and the storage start / stop of the mark track storage unit 102 is synchronized with the elevator information. Steps S301 to S305 are preliminary preparations for determining the curved portion (inspection site) of the main rope 30.

[0029] Next, use Figure 3 , Figure 7 to Figure 12 The operation of identifying the bent portion (inspection location) of the main rope will be described.

[0030] Figure 7 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed by the maintenance worker 90 in a state where the inspection mark information M2 is added to the inspection location of the main rope 30 in the real world. Figure 8 This is a diagram showing an example of the display unit 100a of the smart glasses 100 viewed by the maintenance worker 90 regarding the inspection mark information M2 immediately after the hoisting machine 40 is operated. Fig. 9 1 is a diagram showing an example of the display unit 100a of the smart glasses 100 viewed by the maintenance worker 90 regarding the inspection mark information M2 in the middle of operating the hoisting machine 40. Fig.10 1 is a diagram showing an example of the display unit 100 a of the smart glasses 100 viewed from the maintenance worker 90 in a state where the inspection location of the main rope 30 comes near the front of the maintenance worker 90 . Fig.11 This is a diagram showing a state in which the maintenance worker 90 continues to track the movement of the inspection mark information M2 attached to the inspection location of the main rope 30 through the smart glasses 100 . Fig.12 This is a diagram showing a state in which the inspection mark information M2 added to the inspection location of the main rope 30 is close to the front of the maintenance worker 90.

[0031] exist Figure 3In the process of moving the car 10 to an arbitrary position (reference floor) and stopping, the maintenance worker 90 uses the information terminal device 110 to instruct the car 10 to move to an arbitrary position (reference floor) and stop. After receiving the information from the information terminal device 110, the elevator control unit 51 controls the traction machine 40 to move the car 10 to an arbitrary position (reference floor) and stop (step S306: the process of moving the car 10 to an arbitrary position and stopping). The state of moving the car 10 to an arbitrary position (reference floor) and stopping is as follows: Figure 1 shown.

[0032] The maintenance worker 90 observes the inspection position of the main rope 30 through the smart glasses 100 ( Figure 1 The maintenance worker 90 touches the inspection position of the main rope 30 to instruct the addition of the inspection mark information M2. After receiving the instruction from the maintenance worker 90, the mark control unit 101 of the smart glasses 100 adds the inspection mark information M2 to the inspection position of the main rope 30 in the real world and displays it in an overlapping manner (step S307: the process of adding the inspection mark information M2 to the inspection position of the main rope 30 in the real world through the smart glasses 100 and displaying it in an overlapping manner). Figure 7 This indicates a state where the inspection mark information M2 is added to the inspection location of the main rope.

[0033] like Figure 1 As shown, the maintenance worker 90 riding on the car 10 observes the Figure 1 The inspection position of the main rope 30 shown in FIG. Figure 7 As shown, the main rope 30 and the hoisting machine 40 are displayed as the actual observed scene (real world) on the display unit 100a of the smart glasses 100. Then, when the part of the display unit 100a where the inspection location of the main rope 30 is displayed is touched, the inspection mark information M2 is superimposed on the actual observed scene. The inspection mark information M2 becomes the inspection location of the main rope 30.

[0034] return Figure 3, the maintenance worker 90 uses the information terminal device 110 to instruct the car 10 and the inspection mark information M2 (the inspection position of the main rope 30) to move in a direction close to each other. After receiving the instruction from the maintenance worker 90, the elevator control unit 51 operates the traction machine 40 to move the car 10 and the inspection mark information M2 in a manner close to each other. At this time, the elevator control information acquisition unit 103 of the smart glasses 100 obtains the information of the operation of the traction machine 40 through the elevator control information sharing unit 12, and the mark control unit 101 moves the inspection mark information M2 according to the movement pattern (track) of the track mark information M1 stored in the mark track storage unit 102 in step S304 (step S308: the car 10 is moved in the direction in which the inspection mark information M2 (inspection position) of the car 10 and the main rope 30 is close to each other, and the smart glasses are used to observe the inspection mark information M2 moving along the track of the track mark information M1 while continuing to track).

[0035] After the hoisting machine 40 has just started to move, the check mark information M2 passes over the hoisting machine 40. Figure 8 As shown, the check mark information M2 moves between the hoisting machine 40 and the counterweight 20 and immediately moves downward. Fig. 9 and Fig.11 As shown, the maintenance worker 90 cooperates with the movement of the inspection mark information M2 that moves together with the main rope 30 and continues to track the inspection mark information M2 through the smart glasses 100.

[0036] When the maintenance worker 90 checks the mark information M2 and reaches the front, he / she instructs the car to stop (see Fig.12 ). In other words, the car 10 is stopped in a state where the line L2 connecting the smart glasses 100 and the inspection mark information M2 is close to horizontal. After receiving the instruction from the maintenance worker 90, the elevator control unit 51 stops the traction machine 40 (step S309: a process of stopping the car in a state where the line L2 connecting the smart glasses 100 and the inspection part of the main rope 30 to which the inspection mark information M2 is added is close to horizontal).

[0037] When car 10 is Fig.12 When the car stops at the position shown, the sight line of the maintenance worker 90 becomes the position L2, and the maintenance worker 90 inspects the vicinity of the inspection mark information M2 as the inspection position of the main rope 30 (step S310: the process of inspecting the vicinity of the inspection mark information M2 as the inspection position of the main rope at the position where the car stops). Through the above process, the inspection position of the main rope 30 is determined.

[0038] According to the present embodiment, even in a machine room-less elevator in which a traction machine is installed at the top of the hoistway, the bent portion of the main rope 30 can be easily identified, and the inspection workability of the main rope 30 can be improved.

[0039] In this embodiment, when the curved portion of the main rope 30 is determined, the process of steps S301 to S305 is performed as a preliminary preparation, but the process of steps S301 to S305 can be performed each time the main rope 30 is inspected, or can be performed based on information that has been performed in the past and stored in the mark track storage unit 102. When a plurality of elevators (for example, No. 1 to No. 3) are installed in a certain building, the track corresponding to each elevator is stored in the mark track storage unit 102, and when the main rope 30 is inspected, the track of the track mark information M1 corresponding to the inspected elevator is read. Then, the inspection mark information M2 can be moved according to the track of the pre-stored track mark information M1.

[0040] The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-mentioned embodiments are embodiments described in detail in order to explain the present invention in an easily understandable manner, and are not necessarily limited to having all the structures described. In addition, a part of the structure of a certain embodiment can be replaced with the structure of another embodiment, and the structure of another embodiment can be added to the structure of a certain embodiment. In addition, with respect to a part of the structure of each embodiment, other structures can also be added, deleted, or replaced. Description of symbols

[0041] 1…hoistway, 10…car, 11…pulley, 12…elevator control information sharing unit, 20…counterweight, 21…pulley, 22…marker, 30…main rope, 40…traction machine, 41…pulley, 50…control device, 51…elevator control unit, 60…traveling cable, 70…communication line, 90…maintenance worker, 100…smart glasses, 100a…display unit, 101…marking control unit, 102…marking track storage unit, 103…elevator control information acquisition unit, 110…information terminal device, M1…track marking information, M2…inspection marking information.

Claims

1. A method for inspecting the main rope of an elevator, wherein: A traction machine is arranged at the top of the hoistway, and a bent portion of a main rope connecting a car and a counterweight and hung on a rope wheel of the traction machine is inspected. The main rope inspection method of the elevator is characterized by comprising: The process of moving the car to an arbitrary position and stopping it; A step of adding inspection mark information to the inspection position of the main rope in the real world through the smart glasses and displaying it in an overlapping manner while the car is stopped at an arbitrary position; The step of moving the car so that the inspection position of the car and the main rope are close to each other, and continuing the tracking while observing the moving inspection mark information; A step of stopping the car when a line connecting the smart glasses and the inspection location of the main rope to which the inspection mark information is added approaches horizontality; and A step of inspecting the vicinity of the inspection mark information as an inspection site of the main rope while the car is stopped.

2. The main rope inspection method of an elevator according to claim 1, characterized in that: Any position of the car is a reference floor.

3. The main rope inspection method of an elevator according to claim 1, characterized in that: The smart glasses are worn by maintenance workers riding in the car.

4. The main rope inspection method of an elevator according to claim 1, characterized in that: The check mark information moves along the track of the pre-stored track mark information.

5. A method for inspecting the main rope of an elevator, wherein: A traction machine is arranged at the top of the hoistway, and a bent portion of a main rope connecting a car and a counterweight and hung on a rope wheel of the traction machine is inspected. The main rope inspection method of the elevator is characterized by comprising: The step of stopping the car at an arbitrary position with the counterweight positioned upward while a maintenance worker is seated on the car; A step of adding track mark information to the real world through the smart glasses, that is, the mark of the counterweight, and displaying it in an overlapping manner; The process of moving the car in a direction in which the car and the counterweight approach each other, while continuing to track the car by observing the track mark information superimposed on the mark of the counterweight through the smart glasses, and stopping the car when the line connecting the smart glasses and the mark of the counterweight approaches horizontal; A process for storing a track of said track mark information; The process of moving the car to the reference floor and stopping the car; A step of adding inspection mark information to an inspection position of the main rope in the real world through the smart glasses and displaying the information in an overlapping manner while the car is stopped at the reference floor; The step of moving the car so that the car and the inspection position of the main rope are close to each other, and continuing to track while observing the inspection mark information moving along the track of the track mark information; A step of stopping the car when a line connecting the smart glasses and the inspection location of the main rope to which the inspection mark information is added approaches horizontality; and A step of inspecting the vicinity of the inspection mark information as an inspection site of the main rope while the car is stopped.

6. The main rope inspection method of an elevator according to claim 5, characterized in that: The smart glasses are worn by maintenance workers riding in the car.

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