Landing door inspection device and landing door inspection method

Abstract

To suppress generation of a shock sound at the time of full closing caused by full closing of a landing door and a car door in remote automatic inspection of a self-closing operation of the landing door.SOLUTION: A landing door inspection device 32 provided in an elevator 1 provided with a car 10, a landing door 21 provided at a landing 20, a door drive device that drives the landing door 21 to open / close, and a self-closing device that self-closes the landing door 21 comprises detection means for detecting the self-closing position and the self-closing speed of the landing door 21, and compares the self-closing speed of the landing door 21 at a prescribed self-closing position with a preset reference value to determine whether there is an abnormality of the self-closing operation.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a landing door inspection device and a landing door inspection method, and particularly to an inspection means for a self-closing function.

Background Art

[0002] Generally, the landing door of an elevator can be opened and closed by engaging an engaging device provided on the car door and an engaged device provided on the landing door. The landing door is equipped with a self-closing function that constantly applies a force in the direction to close the door with a weight or a spring. The self-closing function is a function that, when the landing door is opened by a force in the opening direction and the force in the opening direction is removed, the self-closing operation of the landing door is performed by the weight or the spring to fully close the door.

[0003] In the inspection of the self-closing operation of the landing door in an elevator, it is confirmed on each floor whether the self-closing operation is normally performed on the landing door. For example, the engaged device provided on the landing door and the engaging device provided on the car door are engaged, and after the landing door is fully opened by the door driving device, the force in the opening direction of the door driving device is removed, and an operator visually confirms whether the landing door automatically closes completely by the normal self-closing operation.

[0004] Patent Document 1 discloses an elevator door inspection device and a door inspection method in which, in the automatic inspection of the self-closing operation, when the landing door is moved from the closed position to the open position by the door driving device and the self-closing operation does not start when the force by the door driving device is removed, the landing door is slightly moved from the open position toward the closed position side to start the self-closing operation. Thereby, regardless of the type of elevator, the usage environment, etc., the inspection of the self-closing operation of the landing door can be automatically performed, and the burden on the operator can be reduced.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In recent years, from the perspective of labor saving in inspection and examination, remote automatic inspection of the self-closing operation has been studied. In the remote automatic inspection of the self-closing operation, after engaging the car door and the landing door and opening the car door to open the landing door, the self-closing operation is started by removing the force in the opening direction, and it is inspected whether the self-closing operation is performed normally. However, in the self-closing operation by the self-closing function, generally, the force in the closing direction is applied only by the force of a weight or a spring, and it is an operation to fully close. Therefore, in the remote automatic inspection of the self-closing operation performed with the force in the opening direction of the door removed, since the door moves only by the force in the closing direction of the self-closing function, there is a problem that an impact sound is generated when the doors collide with each other at full close. Note that even the method disclosed in Prior Patent Document 1 cannot address such a problem.

Means for Solving the Problems

[0007] A landing door inspection device provided in an elevator including a car, a landing door installed at a landing, a door drive device for opening and closing the landing door, and a self-closing device for performing a self-closing operation of the landing door, the landing door inspection device including detection means for detecting the self-closing position and self-closing speed of the landing door, and comparing the self-closing speed of the landing door at a predetermined self-closing position with a reference value determined in advance to determine the presence or absence of an abnormality in the self-closing operation.

Effects of the Invention

[0008] According to the landing door inspection device and the landing door inspection method according to the present invention, it is possible to suppress the generation of an impact sound at full close due to the full close of the landing door and the car door in the remote automatic inspection of the self-closing operation of the landing door.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0010] Hereinafter, with reference to the drawings, embodiments of the landing door inspection device and the landing door inspection method according to the present invention will be described in detail. The embodiments described below are merely examples, and the present invention is not limited to the following embodiments. Also, forms obtained by selectively combining a plurality of the following embodiments and modification examples are included in the present invention.

[0011] Using FIG. 1, the configurations of the landing 20 and the car 10 in the elevator 1, which is an example of an embodiment, will be described in detail.

[0012] FIG. 1 is a diagram showing the configurations of the car 10 and the landing 20 in the elevator 1, which is an example of an embodiment. The elevator 1 includes a car 10 for carrying people and objects, and is a lifting device that transports people and objects by the car 10 ascending and descending in the hoistway 2 and stopping at the landings 20 on each floor.

[0013] The landing 20 includes a landing door 21 that partitions the landing 20 and the hoistway 2. The landing door 21 is provided with a self-closing device that always applies a force in the closing direction to the landing door 21. Thereby, even when the landing door 21 is opened by a force in the opening direction, when the force in the opening direction is removed, the self-closing operation is automatically started. Therefore, even if the landing door 21 is opened by some force, it automatically closes to ensure the safety of users. The self-closing device includes, for example, a weight connected to the landing door 21 or a spring that biases the landing door 21 in the closing direction.

[0014] The car 10 is provided with a car door 12 which serves as an entrance and exit of the car 10. An engaging device 14 and an engaged device 22 are installed on the opposing surfaces of the car door 12 and the landing door 21. The engaging device 14 is provided on the car door 12, and when the car 10 arrives at the landing 20, it engages with the engaged device 22 provided on the landing door 21, thereby interlocking the landing door 21 with the opening and closing operation of the car door 12. For example, the closed landing door 21 is engaged with the car door 12, and as the car door 12 moves in the opening direction, the landing door 21 also moves in the opening direction. The engaging device 14 is, for example, a vane provided on the car door 12. The engaged device 22 is, for example, a roller provided on the landing door 21.

[0015] The car 10 is provided with a door driving motor 11 as a door driving device for opening and closing the car door 12 and the landing door 21. The door driving motor 11 is provided outside the car 10, for example, installed on the upper part of the car 10. The driving force of the door driving motor 11 is transmitted to the car door 12 using a transmission mechanism (not shown) such as a link mechanism. Thereby, the opening and closing operation of the car door 12 is performed. Also, when the landing door 21 and the car door 12 are engaged by the engaging device 14 and the engaged device 22, the landing door 21 also opens and closes in conjunction with the opening and closing operation of the car door 12 by the door driving motor 11 of the car door 12.

[0016] When the door driving motor 11 performs an opening operation to open the door, it moves the car door 12 and the landing door 21 against the force in the closing direction of the self-closing device. On the other hand, when performing a closing operation to close the door, the door driving motor 11 moves the car door 12 and the landing door 21 to a position immediately before reaching the fully closed position where the car door 12 and the landing door 21 are fully closed. Thereafter, the engagement between the engaging device 14 of the car door 12 and the engaged device 22 of the landing door 21 is disengaged, and the landing door 21 moves to the fully closed position by the force in the closing direction of the self-closing device. The car door 12 moves to the fully closed position by the door driving motor 11. Thereby, the closing operation of the car door 12 and the landing door 21 is completed.

[0017] Using FIG. 2, the control device 40 and the door control device 30 in the elevator 1 which is an example of the embodiment will be described in detail.

[0018] FIG. 2 is a block diagram for explaining the control of the elevator 1 which is an example of the embodiment. The elevator 1 includes a control device 40 for controlling the entire elevator 1 and a door control device 30 for controlling the car door 12. The control device 40 is connected to the door control device 30. Also, it is communicably connected to an information center 50 installed remotely. The door control device 30 includes a landing door inspection device 32 and is connected to the car 10.

[0019] The door control device 30 includes a drive control unit 31 for controlling the door drive motor 11 of the car 10. The drive control unit 31 controls the door drive motor 11 for the normal getting on and off of passengers. The control device 40 controls, for example, a hoist (not shown) to move the car 10 up and down in the hoistway 2 and stop it at the landing 20.

[0020] The remote automatic inspection of the self-closing operation will be described below. The self-closing operation is an operation in which, with the car door 12 and the landing door 21 engaged, the landing door 21 is fully opened using the door drive motor 11, then the power of the door drive motor 11 is stopped, and the landing door 21 is self-closed by a self-closing device.

[0021] The control device 40 includes a command unit 41 for issuing commands to the door control device 30. When a predetermined start condition for performing the remote automatic inspection of the self-closing operation is satisfied, the command unit 41 outputs a start command for the remote automatic inspection to the door control device 30. Thereby, the remote automatic inspection of the self-closing operation is started by the door control device 30 and the landing door inspection device 32. Also, the command unit 41 may output the start command for the remote automatic inspection according to an instruction from the information center 50.

[0022] The control device 40 includes a recording unit 42 that records the inspection results of the closing operation acquired from the inspection result output unit 34. The inspection results recorded in the recording unit 42 may be transmitted to the information center 50 by the communication control unit 43. Also, a notification may be sent to the information center 50 only when an abnormality occurs. The information center 50 manages and utilizes data of tens of thousands of machines including the elevators 1 throughout Japan, for example, and performs repairs and troubleshooting of machines and remote monitoring of machines.

[0023] The door control device 30 includes a drive control unit 31 that controls the door drive motor 11 of the car 10. In addition to controlling the door drive motor 11 for normal passenger boarding and alighting, the drive control unit 31 controls the door drive motor 11 during the inspection of the closing operation.

[0024] Using FIG. 3, the remote automatic inspection of the closing operation, which is an example of the present embodiment, will be described in detail. Also, the description will be made with reference to FIGS. 1, 2, 4, and 5 as appropriate.

[0025] FIG. 3 is a flowchart for explaining the overall process of the elevator 1 when performing the remote automatic inspection of the closing operation in the elevator 1, which is an example of the embodiment. When a predetermined start condition for starting the inspection of the closing operation is satisfied, the control device 40 causes the car 10 to arrive at the landing 20 (step S1) and starts the inspection. When the car 10 arrives at the landing 20, the closing operation inspection is performed (step S2). If the closing operation inspection has not been completed at all landings (NO in step S3), the car 10 is moved to the landing 20 where the closing operation inspection has not been performed (step S4), and the closing operation inspection is performed. The closing operation inspection in step S2 is the closing operation inspection process by the landing door inspection device 32 shown in FIG. 5 described later.

[0026] Using FIG. 2, the landing door inspection device 32 will be described in detail.

[0027] The landing door control device 30 includes a landing door inspection device 32 for remotely and automatically inspecting the self-closing operation of the landing door 21. The landing door inspection device 32 includes a determination unit 33 that compares the self-closing speed of the landing door 21 at a preset predetermined self-closing position with a preset reference value to determine whether there is an abnormality in the self-closing operation. Although it will be described in detail later, the self-closing position and self-closing speed of the landing door 21 are detected by an encoder 13, which is provided in the elevator 1 and serves as a means for detecting the positions and speeds of the car door 12 and the landing door 21.

[0028] When the closing speed of the landing door 21 at a predetermined self-closing position reaches the reference value, the determination unit 33 determines that the self-closing operation is normal. When the self-closing speed of the landing door 21 does not reach the reference value, the determination unit 33 determines that there is an abnormality in the self-closing operation (see Fig. 5).

[0029] The landing door inspection device 32 includes an inspection result output unit 34 that outputs the inspection result of the self-closing operation determined by the determination unit 33 to the control device 40. The inspection result output unit 34 may output the inspection result to the control device 40 after the inspection of the self-closing operation of each landing is completed, or may output the inspection result to the control device 40 after the inspection of the self-closing operations of all landings is completed.

[0030] Using Fig. 4, the remote automatic inspection process of the self-closing operation by the landing door inspection device 32 will be described in detail.

[0031] Fig. 4 is a flowchart for explaining the remote automatic inspection process of the self-closing operation, which is an example of this embodiment. The drive control unit 31 of the door control device 30 controls the door drive motor 11 to open and close the landing door 21 at a low speed by opening and closing the car door 12 at a low speed (step S10). Thereby, the presence or absence of abnormalities such as foreign objects on the door rail is confirmed (step S11). If an abnormality is detected (NO in step S11), the inspection of that landing 20 is terminated as an abnormality detection (step S12). If no abnormality is detected on the door rail (YES in step S11), the landing door 21 is moved to the open position (step S13). Here, the open position is, for example, the position where the landing door 21 is fully opened.

[0032] When the landing door 21 moves to the open position, the drive control unit 31 removes the driving force in the opening direction of the door drive motor 11 and starts the self-closing operation of the landing door 21 (step S14). The determination unit 33 determines whether the self-closing speed of the landing door 21 is equal to or higher than a reference value on the condition that the landing door 21 has reached a predetermined self-closing position. If the self-closing speed is equal to or higher than the reference value (YES in step S15), it is determined that there is no abnormality (step S16).

[0033] If the self-closing speed is not equal to or higher than the reference value (NO in step S15), the determination unit 33 determines that there is an abnormality in the self-closing operation (step S12). After determining whether the self-closing speed is equal to or higher than the reference value, regardless of whether the self-closing speed is equal to or higher than the reference value or not, the self-closing operation is stopped by the door drive motor 11, and the landing door 21 is fully opened and moved (step S17). It is possible to prevent impact from occurring due to collision between the doors during the self-closing operation and suppress the generation of impact noise. Subsequently, the landing door 21 is fully closed by the closing operation by the door drive motor 11 (step S18), and the inspection of the landing 20 is completed.

[0034] When the inspection of the self-closing operation of all landings is completed (YES in step S3), the inspection result output unit 34 of the landing door inspection device 32 transmits the inspection result of the self-closing operation of all landings to the control device 40 (step S5). The control device 40 records the acquired inspection result in the recording unit 42 (step S6).

[0035] When an abnormality is detected in the acquired inspection result (YES in step S7), the control device 40 reports it to the information center 50 (step S8) and ends the remote automatic inspection of the self-closing operation. When no abnormality is detected in the acquired inspection result (NO in step S7), the remote automatic inspection of the self-closing operation is ended. Also, when no abnormality is detected in the inspection result, an operator acquires the inspection result from the recording unit 42 during regular inspection or the like. Further, even when no abnormality is detected in the inspection result, the inspection result may be transmitted to the information center 50. In this case, it is not necessary for the operator to acquire the inspection result from the recording unit 42.

[0036] The elevator 1 is provided with an encoder 13 as detection means for detecting the position and speed of the car door 12 and the landing door 21. The encoder 13 is a measuring device for measuring the position and speed of the car door 12 and the landing door 21, and is preferably installed on the main shaft of the door driving motor 11. Thereby, by installing it only on the car 10, it becomes possible to measure the position and speed of the landing door 21 at all landings 20 where the car 10 stops. Also, the encoder 13 may be installed so as to be connected to the landing door 21. For example, the encoder 13 is installed in a self-closing device connected to the landing door 21.

[0037] Using FIG. 5, the reference values of the predetermined self-closing position and self-closing speed will be described in detail.

[0038] FIG. 5 is a diagram showing the relationship between the self-closing position and the self-closing speed of the landing door 21 during the self-closing operation. The dotted line shown in FIG. 5 is the reference value data. The reference value data is data obtained when the landing door 21 in an initial state without abnormality is fully closed by the self-closing operation. The reference value data is obtained for each elevator 1 where remote automatic inspection of the self-closing operation is performed. Also, it is preferably obtained for each landing 20. Also, the broken line shown in FIG. 5 is data obtained during remote automatic inspection of the self-closing operation. The solid line shown in FIG. 5 is a line indicating a predetermined self-closing position set in advance. During remote automatic inspection of the self-closing operation, the self-closing position and the self-closing speed of the landing door 21 are detected by the encoder 13 which is the detection means.

[0039] The predetermined self-closing position is a self-closing position that is a condition for comparing the self-closing speed with the reference value. That is, during remote automatic inspection of the self-closing operation, when the landing door 21 reaches the predetermined self-closing position by the self-closing operation, the self-closing speed is compared with the reference value at the predetermined self-closing position to determine whether there is an abnormality in the self-closing operation. The self-closing position is the position where the landing door 21 moves in the closing direction from the fully open position by the self-closing operation.

[0040] The predetermined self-closing position is preferably provided at an intermediate point between the closed position and the fully open position. Further, the predetermined self-closing position may be set closer to the closed position side from the intermediate point between the closed position and the fully open position of the landing door 21. On the other hand, the predetermined self-closing position may be set closer to the fully open position side from the intermediate point between the closed position and the fully open position of the landing door 21. Here, the closed position is the position of the landing door 21 when the landing door 21 is fully closed.

[0041] 1 Elevator, 2 Hoistway, 10 Car, 11 Door drive motor, 12 Car door, 13 Encoder, 14 Engaging device, 20 Landing, 21 Landing door, 22 Engaged device, 30 Door control device, 31 Drive control unit, 32 Landing door inspection device, 33 Judgment unit, 34 Inspection result output unit, 40 Control device, 41 Command unit, 42 Recording unit, 43 Communication control unit, 50 Information center

Claims

1. A landing door inspection device provided in an elevator, comprising a car, a landing door installed at a landing, a door drive device for driving the landing door to open and close, and a self-closing device for performing a self-closing operation of the landing door, including detection means for detecting the self-closing position and self-closing speed of the landing door, A landing door inspection device that compares the self-closing speed of the landing door at a predetermined self-closing position with a reference value determined in advance and determines the presence or absence of an abnormality in the self-closing operation.

2. The landing door inspection device according to claim 1, wherein it is determined that there is no abnormality in the self-closing operation on the condition that the self-closing speed is equal to or higher than the reference value.

3. The landing door inspection device according to claim 1, wherein the predetermined self-closing position is set closer to the fully open position side than the midpoint between the closed position and the fully open position of the landing door.

4. The landing door inspection device according to any one of claims 1 to 3, wherein the reference value is determined by the self-closing speed at the predetermined self-closing position when the landing door in the elevator in the initial state is fully closed by the self-closing operation.

5. A landing door inspection method used in an elevator comprising a car and a landing door installed at a landing, the method comprising: a moving step of moving the landing door from a closed position to an open position; a comparing step of starting the self-closing operation of the landing door and comparing the self-closing speed of the landing door at a predetermined self-closing position with a preset reference value; a determining step of determining the presence or absence of an abnormality in the self-closing operation based on the comparison result between the self-closing speed and the reference value; A landing door inspection method including the above steps.

6. The landing door inspection method according to claim 5, wherein the predetermined self-closing position is set closer to the open position side than the midpoint between the closed position and the open position.

7. The landing door inspection method according to claim 5, wherein the reference value is determined by the self-closing speed at the predetermined self-closing position when the landing door in the initial state of the elevator is fully closed by the self-closing operation.

8. The landing door inspection method according to claim 5, wherein the open position is a position where the landing door is fully opened.

9. The landing door inspection method according to any one of claims 5 to 8, including a step of causing the landing door to move fully open or stopping the self-closing operation after the comparison step in order to suppress the generation of impact during self-closing.

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