Elevator and method for measuring amount of vibration of elevator

Abstract

To provide an elevator that is able to improve the efficiency of work for identifying a position where vibration is generated in a car.SOLUTION: An elevator includes: a camera device 7 that is provided in an elevator car 1 and captures an image of an area viewed downward from the elevator car 1; an image analysis device 8 that calculates an amount of vibration of the elevator car 1 by using the image captured by the camera device 7; a hoisting machine 4 that raises and lowers the elevator car 1; and an elevator control device 601 that controls driving of the hoisting machine 4. Position information of the elevator car 1 is input to the image analysis device 8. The amount of vibration of the elevator car 1 and the position information of the elevator car 1 are stored in the image analysis device 8 in association with each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an elevator and a method for measuring the vibration amount of an elevator. [Background technology]

[0002] 2. Description of the Related Art Conventionally, elevators have been known that include a car, a hoist that raises and lowers the car, and an elevator control device that controls the drive of the hoist (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-17192 A Summary of the Invention [Problem to be solved by the invention]

[0004] If a foreign object adheres to the car guide rail that guides the car as it ascends and descends, the car will vibrate when it ascends and descends. If vibration occurs in the car as it ascends and descends, the position of the car when the vibration occurs is identified, and the position of the foreign object on the car guide rail is identified based on the identified car position. However, in the elevator configuration described in Patent Document 1, in order to identify the position of the foreign object on the car guide rail, an operator must get on the car and manually move the car at a low speed while identifying the position where the vibration occurs in the car. This has led to a problem of poor efficiency in the work of identifying the position where the vibration occurs in the car.

[0005] The present disclosure has been made to solve the problems described above, and has as its objective to provide an elevator and a method for measuring the vibration amount of an elevator that can improve the efficiency of the task of identifying the location where vibration occurs in the car. [Means for solving the problem]

[0006] The elevator of the present disclosure comprises a camera device mounted on the car and capturing an image of the area viewed downward from the car; an image analysis device that calculates the amount of vibration of the car using images captured by the camera device; a hoist that raises and lowers the car; and an elevator control device that controls the drive of the hoist device, and position information of the car is input to the image analysis device, and the amount of vibration of the car and the car position information are stored in correspondence with each other in the image analysis device. The elevator vibration measuring method according to the present disclosure is a method for measuring the amount of vibration of an elevator using an elevator that includes a camera device provided on the car, an image analysis device that calculates the amount of vibration of the car using images captured by the camera device, a hoist that raises and lowers the car, and an elevator control device that controls the drive of the hoist, and includes an imaging process in which the car rises and lowers while the camera device images the area viewed downward from the car, and a vibration amount calculation process in which the image analysis device calculates the amount of vibration of the car using the images captured by the camera device during the imaging process, and the vibration amount of the car and position information of the car are stored in the image analysis device in correspondence with each other. Effect of the Invention

[0007] According to the elevator and elevator vibration amount measuring method of the present disclosure, it is possible to improve the efficiency of the work of identifying the location where vibration occurs in the car. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a configuration diagram showing an elevator according to a first embodiment. [Diagram 2] FIG. 2 is a block diagram showing the elevator of FIG. 1. [Diagram 3] Fig. 2 is a flowchart showing a procedure for measuring the vibration amount of the elevator car in Fig. 1. Fig. 3 is a front view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Embodiment 1 Fig. 1 is a configuration diagram showing an elevator according to embodiment 1. Fig. 2 is a block diagram showing the elevator in Fig. 1. The elevator according to embodiment 1 includes a car 1, a counterweight 2, a main rope 3, a hoist 4, a deflector pulley 5, an elevator control panel 6, a camera device 7, an image analysis device 8, and a lighting device 9.

[0010] The car 1, the counterweight 2, the camera device 7, the image analysis device 8 and the lighting device 9 are provided in a hoistway 10. The hoisting machine 4 and the elevator control panel 6 are provided in a machine room 11.

[0011] One longitudinal end of the main rope 3 is connected to the car 1. The other longitudinal end of the main rope 3 is connected to the counterweight 2. The longitudinal intermediate portion of the main rope 3 is wound around a hoist 4 and a deflector sheave 5.

[0012] The hoist 4 is driven to move the main ropes 3. The movement of the main ropes 3 causes the car 1 and the counterweight 2 to move in opposite directions in the hoistway 10. Thus, the hoist 4 raises and lowers the car 1 and the counterweight 2.

[0013] The elevator control panel 6 has an elevator control device 601. The elevator control device 601 controls the driving of the hoisting machine 4. When controlling the driving of the hoisting machine 4, the elevator control device 601 is configured to acquire position information of the car 1, moving direction information of the car 1, speed information of the car 1, and weight information inside the car 1.

[0014] The camera device 7 is attached to the bottom of the car 1. The camera device 7 continuously captures images of the area viewed downward from the car 1. Images captured by the camera device 7 include a car guide rail (not shown) that guides the car 1. The elevator control device 601 controls the capturing of images by the camera device 7.

[0015] The image analysis device 8 is attached to the top of the car 1. The images captured by the camera device 7 are input from the camera device 7 to the image analysis device 8. The position information of the car 1, the moving direction information of the car 1, the speed information of the car 1, and the weight information inside the car 1 acquired by the elevator control device 601 are input from the elevator control device 601 to the image analysis device 8.

[0016] The image analysis device 8 calculates the amount of vibration of the car 1 by using the images captured by the camera device 7. As a method for calculating the amount of vibration of the car 1, there is a method in which the amount of vibration of the camera device 7 in the horizontal direction is calculated from each image continuously captured by the camera device 7, and the calculated amount of vibration of the camera device 7 is regarded as the amount of vibration of the car 1.

[0017] Specifically, the image analysis device 8 identifies the position of the car guide rail included in the image captured by the camera device 7, and calculates the amount of vibration in the horizontal direction of the identified car guide rail.

[0018] When no vibration is occurring in the car 1, the position of the car guide rail in the image captured by the camera device 7 does not change in the horizontal direction.

[0019] On the other hand, when vibration occurs in the car 1, the position of the car guide rail in the image captured by the camera device 7 changes in the horizontal direction. When vibration occurs in the car 1, the amount of horizontal vibration of the car guide rail in the image captured by the camera device 7 is proportional to the amount of horizontal vibration of the camera device 7.

[0020] As a result, the image analysis device 8 can calculate the amount of vibration of the camera device 7 in the horizontal direction by calculating the amount of vibration in the specified car guide rail in the horizontal direction.

[0021] The elevator control device 601 controls the calculation of the vibration amount of the car 1 by the image analysis device 8.

[0022] When the vibration amount of cage 1 is calculated, the vibration amount of cage 1, position information of cage 1, movement direction information of cage 1, speed information of cage 1, and weight information within cage 1 are stored in correspondence with each other in image analysis device 8.

[0023] Furthermore, image analysis device 8 uses the image captured by camera device 7 to determine whether or not a worker is present in the pit of hoistway 10. The result of the determination as to whether or not a worker is present in the pit of hoistway 10 is input from image analysis device 8 to elevator control device 601. If it is determined that a worker is present in the pit of hoistway 10, elevator control device 601 stops the photographing process described below.

[0024] The lighting device 9 is attached to the lower part of the car 1. The lighting device 9 illuminates the area below the car 1. The elevator control device 601 controls the lighting of the lighting device 9.

[0025] Next, there will be described the procedure of the maintenance and inspection work for the vibration of the car 1. Fig. 3 is a flow chart showing the procedure of the maintenance and inspection work for the vibration of the car 1 in Fig. 1. First, in step S101, a photographing process is performed.

[0026] In the photographing process, the worker switches the elevator operation mode from the normal operation mode to the measurement operation mode by operating the elevator control panel 6. This turns on the lighting device 9, starts photographing by the camera device 7, and causes the car 1 to shuttle in the elevator shaft 10 between the top floor and the bottom floor.

[0027] In addition, during the photographing process, the image photographed by the camera device 7, the position information of the cage 1, the movement direction information of the cage 1, the speed information of the cage 1, and the weight information within the cage 1 are stored in the image analysis device 8 in correspondence with each other.

[0028] Thereafter, in step S102, a vibration amount calculation step is performed. In the vibration amount calculation step, the image analysis device 8 calculates the vibration amount of the car 1 using the images captured by the camera device 7 in the photographing step.

[0029] In addition, in the vibration amount calculation process, the vibration amount of the car, position information of the car 1, moving direction information of the car 1, speed information of the car 1, and weight information within the car 1 are stored in the image analysis device 8 in correspondence with each other.

[0030] Thereafter, in step S103, a vibration amount display process is performed. In the vibration amount display process, an operator inputs the information stored in the image analysis device 8 into the maintenance computer, and causes a graph in which the vibration amount of the car 1 and the position information of the car 1 correspond to each other on the display unit of the maintenance computer.

[0031] Thereafter, in step S104, a failure determination process is performed. In the failure determination process, the worker checks the graph displayed on the display unit of the maintenance computer and determines whether or not the vibration amount of the car 1 exceeds a threshold value T that is a preset value. Note that in the failure determination process, the maintenance computer may determine whether or not the vibration amount of the car 1 exceeds a threshold value T that is a preset value.

[0032] If it is determined in the failure determination process that the vibration amount of the car 1 exceeds a preset value, a failure response process is performed in step S105. In the failure response process, an operator uses a graph displayed on the display unit of the maintenance computer to identify the position of the car 1 when the vibration amount of the car 1 exceeds the preset value, and moves the car 1 to the identified position. Also, in the failure response process, foreign matter attached to the car guide rail is removed.

[0033] After the failure response process in step S105, the procedure for the maintenance and inspection work regarding the vibration of the car 1 returns to the photographing process in step S101.

[0034] On the other hand, if it is determined in the failure determination step of step S104 that the vibration amount of the car 1 does not exceed the preset value, the maintenance and inspection work regarding the vibration of the car 1 is completed.

[0035] As described above, the elevator according to the first embodiment includes the camera device 7, the image analysis device 8, the hoist 4, and the elevator control device 601. The camera device 7 is provided on the car 1 and captures an image of the area viewed downward from the car 1. The image analysis device 8 calculates the amount of vibration of the car 1 using the image captured by the camera device 7. The hoist 4 raises and lowers the car 1. The elevator control device 601 controls the drive of the hoist 4. Position information of the car 1 is input to the image analysis device 8. The amount of vibration of the car 1 and the position information of the car 1 are stored in the image analysis device 8 in correspondence with each other. According to this configuration, the camera device 7 captures an image of the area viewed downward from the car 1, the image analysis device 8 calculates the amount of vibration of the car 1 using the image captured by the camera device 7, and the amount of vibration of the car 1 and the position information of the car 1 are stored in the image analysis device 8 in correspondence with each other. This allows a worker to identify the position where vibration occurs in the car 1 without having to get on the car 1 and manually move the car 1 at a low speed. As a result, the efficiency of the work of identifying the position where vibration occurs in the car 1 can be improved.

[0036] Moreover, in the elevator according to the first embodiment, the elevator control device 601 controls the driving of the hoist 4 so that the car 1 reciprocates between the top floor and the bottom floor. The image analysis device 8 is configured to receive input of movement direction information of the car 1. The vibration amount of the car 1, position information of the car 1, and movement direction information of the car 1 are stored in the image analysis device 8 in correspondence with each other. According to this configuration, it is possible to identify the movement direction of the car 1 when vibration occurs in the car 1. As a result, for example, when vibration occurs in the car 1 only in either the ascending operation or the descending operation, it is possible to identify the position where the vibration occurs in the car 1 and further to identify the movement direction of the car 1 when vibration occurs in the car 1.

[0037] In the elevator according to the first embodiment, the image analysis device 8 is configured to receive speed information of the car 1. The vibration amount of the car 1, the position information of the car 1, and the speed information of the car 1 are stored in the image analysis device 8 in correspondence with each other. This configuration makes it possible to identify the speed of the car 1 when vibration occurs in the car 1. For example, when a plurality of patterns are set for the speed of the car 1, and the car 1 travels back and forth in the elevator shaft 10 between the top floor and the bottom floor in each speed pattern, and vibration occurs in the car 1 only in one of the plurality of speed patterns, it is possible to identify the position where vibration occurs in the car 1 and further to identify the speed of the car 1 when vibration occurs in the car 1.

[0038] In the elevator according to the first embodiment, weight information inside the car 1 is input to the image analysis device 8. The vibration amount of the car 1, the position information of the car 1, and the weight information inside the car 1 are stored in the image analysis device 8 in correspondence with each other. With this configuration, it is possible to identify the weight inside the car 1 when vibration occurs in the car 1. For example, when a plurality of patterns are set for the weight inside the car 1, and the car 1 travels back and forth in the elevator shaft 10 between the top floor and the bottom floor in each weight pattern, and vibration occurs in the car 1 only in one of the plurality of weight patterns inside the car 1, it is possible to identify the position where vibration occurs in the car 1 and further identify the weight inside the car 1 when vibration occurs in the car 1.

[0039] Moreover, the elevator according to the first embodiment includes a lighting device 9 provided in the car 1. The lighting device 9 illuminates the area downward from the car 1. With this configuration, the area viewed downward from the car 1 can be brightened. This allows the camera device 7 to clearly capture the area viewed downward from the car 1.

[0040] Moreover, in the elevator according to the first embodiment, the camera device 7 photographs the pit of the elevator shaft 10. The image analysis device 8 uses the image photographed by the camera device 7 to determine whether or not a worker is present in the pit of the elevator shaft 10. According to this configuration, when a worker is present in the pit of the elevator shaft 10, the photographing process can be stopped.

[0041] Moreover, the elevator vibration amount measuring method according to the first embodiment includes an imaging step and a vibration amount calculation step. In the imaging step, the car 1 ascends and descends while the camera device 7 images the area seen downward from the car 1. In the vibration amount calculation step, the image analysis device 8 calculates the vibration amount of the car 1 using the image captured by the camera device 7 in the imaging step, and the vibration amount of the car 1 and the position information of the car 1 are stored in the image analysis device 8 in correspondence with each other. According to this configuration, the camera device 7 images the area seen downward from the car 1, the image analysis device 8 calculates the vibration amount of the car 1 using the image captured by the camera device 7, and the vibration amount of the car 1 and the position information of the car 1 are stored in the image analysis device 8 in correspondence with each other. This allows the operator to identify the position where the car 1 generates vibration without getting on the car 1 and manually moving the car 1 at a low speed. As a result, the efficiency of the work of identifying the position where the car 1 generates vibration can be improved.

[0042] In the elevator according to the first embodiment, the image analyzing device 8 is attached to the upper part of the car 1. However, this is not limited to this. For example, the image analyzing device 8 may be included in the elevator control panel 6.

[0043] Also, in the elevator according to the first embodiment, a configuration has been described in which the amount of horizontal vibration of the camera device 7 is calculated by calculating the amount of horizontal vibration of the car guide rail in the images captured by the camera device 7. However, this is not limited to this. For example, a target for photography may be placed in the pit of the elevator shaft 10, and the amount of horizontal vibration of the camera device 7 may be calculated by calculating the amount of horizontal vibration of the target in each of the images captured successively by the camera device 7.

[0044] In addition, in the elevator according to the first embodiment, the elevator operation mode is switched from the normal operation mode to the measurement operation mode, and the photographing process is performed. However, this is not limited to this. The photographing process may be performed in the normal operation mode.

[0045] Although the elevator according to the preferred embodiment 1 has been described above, the elevator is not limited to the elevator according to the above-mentioned embodiment 1. Various modifications and conversions can be made to the elevator according to the above-mentioned embodiment 1 without departing from the scope of the claims.

[0046] Various aspects of the present disclosure are summarized below as appendices.

[0047] (Appendix 1) A camera device is provided in the car and captures an image of a downward area from the car; An image analyzer that calculates the vibration amount of the car using the image captured by the camera device; A hoist that raises and lowers the car; An elevator control device that controls the drive of the hoist; Equipped with Position information of the cage is input to the image analysis device, An elevator in which the vibration amount of the car and the position information of the car are stored in the image analyzing device in correspondence with each other. (Appendix 2) the elevator control device controls driving of the hoist so that the car reciprocates between a top floor and a bottom floor, The image analyzing device is configured to receive information on the moving direction of the car, 2. An elevator as described in claim 1, wherein the vibration amount of the cage, the position information of the cage, and the movement direction information of the cage correspond to each other and are stored in the image analysis device. (Appendix 3) The image analyzer is configured to receive speed information of the car, 3. An elevator according to claim 1 or 2, wherein the vibration amount of the cage, the position information of the cage, and the speed information of the cage correspond to each other and are stored in the image analysis device. (Appendix 4) The image analyzer is configured to receive weight information about the inside of the car, An elevator according to any one of appendix 1 to appendix 3, wherein the vibration amount of the cage, the position information of the cage, and the weight information inside the cage correspond to each other and are stored in the image analysis device. (Appendix 5) An elevator according to any one of claims 1 to 4, comprising a lighting device provided in the car to illuminate a downward direction from the car. (Appendix 6) The camera device photographs the elevator pit, An elevator described in any one of Appendix 1 to Appendix 5, wherein the image analysis device uses images captured by the camera device to determine whether or not there is a worker in the pit. (Appendix 7) A method for measuring an amount of vibration of an elevator using an elevator that includes a camera device provided on a car, an image analyzer that calculates an amount of vibration of the car using an image captured by the camera device, a hoist that raises and lowers the car, and an elevator control device that controls the drive of the hoist, an imaging step in which the car ascends and descends while the camera device images an area viewed downward from the car; a vibration amount calculation step in which the image analysis device calculates a vibration amount of the cage using an image captured by the camera device in the photographing step, and the vibration amount of the cage and position information of the cage are stored in the image analysis device in correspondence with each other; A method for measuring the vibration magnitude of an elevator equipped with the device. [Explanation of symbols]

[0048] 1 car, 2 counterweight, 3 main rope, 4 hoist, 5 deflector, 6 elevator control panel, 7 camera device, 8 image analysis device, 9 lighting device, 10 hoistway, 11 machine room, 601 elevator control device.

Claims

1. A camera device is provided in the car and captures an image of a downward area from the car; An image analyzer that calculates the vibration amount of the car using the image captured by the camera device; A hoist that raises and lowers the car; An elevator control device that controls the drive of the hoist; Equipped with Position information of the cage is input to the image analysis device, An elevator in which the vibration amount of the car and the position information of the car are stored in the image analyzing device in correspondence with each other.

2. the elevator control device controls driving of the hoist so that the car reciprocates between a top floor and a bottom floor, The image analyzing device is configured to receive information on the moving direction of the car, 2. The elevator according to claim 1, wherein the vibration amount of the car, the position information of the car, and the moving direction information of the car are stored in the image analyzing device in correspondence with each other.

3. The image analyzer is configured to receive speed information of the car, 3. The elevator according to claim 1, wherein the vibration amount of the car, the position information of the car, and the speed information of the car are stored in the image analyzing device in correspondence with each other.

4. The image analyzer is configured to receive weight information about the inside of the car, 3. The elevator according to claim 1, wherein the vibration amount of the car, the position information of the car, and the weight information inside the car are stored in the image analyzing device in correspondence with each other.

5. 3. The elevator according to claim 1 or 2, further comprising a lighting device provided in the car for illuminating a downward direction from the car.

6. The camera device photographs the elevator pit, The elevator according to claim 1 or claim 2, wherein the image analysis device uses images captured by the camera device to determine whether or not a worker is present in the pit.

7. A method for measuring an amount of vibration of an elevator using an elevator that includes a camera device provided on a car, an image analyzer that calculates an amount of vibration of the car using an image captured by the camera device, a hoist that raises and lowers the car, and an elevator control device that controls the drive of the hoist, an imaging step in which the car ascends and descends while the camera device images an area viewed downward from the car; a vibration amount calculation step in which the image analysis device calculates a vibration amount of the cage using an image captured by the camera device in the photographing step, and the vibration amount of the cage and position information of the cage are stored in the image analysis device in correspondence with each other; A method for measuring the vibration magnitude of an elevator equipped with the device.

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