JP2023093905A - Elevator maintenance operation control device and elevator maintenance operation control method - Google Patents

Abstract

To reduce the manual operation of a worker in checking the braking force of a rope brake.SOLUTION: An elevator maintenance operation control device 10 includes a door control unit 12 that controls opening and closing of a car door, and a machine brake control unit 13 that controls the operation of a machine brake 6 that brakes a main rope 2. The door control unit 12 opens the car door in a specific operation mode for checking the function of the rope brake 7, and the machine brake control unit 13 releases the machine brake 6 while the door is kept open.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to an elevator maintenance operation control device and an elevator maintenance operation control method, and is preferably applied to an elevator maintenance operation control device and an elevator maintenance operation control method for checking the braking force of a rope brake during maintenance and inspection of an elevator. .

Conventionally, the braking force of rope brakes is checked during maintenance and inspection of elevators. Rope brakes function as unintended car movement protection (UCMP) to prevent the car from running with the door open in the event of an emergency caused by a failure of the drive or control equipment. is an independently installed braking device.

For example, in Patent Document 1, "a displacement sensor 25 that measures the amount of movement of a plurality of moving parts 14a to 14d related to the movable shoe 12, and a displacement sensor 25 that measures the amount of movement of the plurality of moving parts 25 to move the stationary shoe 11". An elevator rope brake inspection device is disclosed which is provided with a diagnostic unit 21 for judging the parallelism of a shoe 12 and judging whether the rope brake operation is normal or abnormal based on the parallelism.

JP 2016-113268 A

When checking the braking force of the rope brake, leave the car door open (door open standby), release the machine brake, and check the braking force of the rope brake against the falling car (main rope). At this time, if the rope brakes do not brake normally, the machine brakes are applied to stop the car, and the braking force is checked (checking the braking force of the machine brakes).

However, in the conventional checking of the braking force of the rope brake, maintenance workers manually check the braking force of the door open standby and of the machine brake, and there is a problem that the work efficiency is not good. For example, the aforementioned Patent Document 1 does not disclose means for solving these problems.

The present invention has been made in consideration of the above points, and is capable of automatically confirming the braking force of the rope brake and reducing the manual operation of the operator in confirming the braking force of the rope brake. It is intended to propose a maintenance operation control device and an elevator maintenance operation control method.

In order to solve this problem, the present invention provides an elevator maintenance and operation control device for maintenance and inspection of an elevator provided with a rope brake for automatically braking the movement of the car door open, which controls the opening and closing of the car door. A door control unit and a machine brake control unit that controls operation of a machine brake that brakes a main rope, and in a specific operation mode for confirming the function of the rope brake, the door control unit closes the car door. There is provided an elevator maintenance operation control device characterized in that the machine brake control unit releases the machine brake while the door is kept open and the door is kept open.

Further, in order to solve such problems, the present invention provides an elevator maintenance operation control method by an elevator maintenance operation control device for performing maintenance and inspection of an elevator provided with a rope brake for automatically braking the door-open running of the car. The elevator maintenance operation control device has a door control section for controlling the opening and closing of the car door, and a machine brake control section for controlling the operation of the machine brake that brakes the main rope, and confirms the function of the rope brake. a door opening step in which the door control unit maintains the car door in an open state, and after the door opening step, the machine brake control unit releases the machine brake in a specific operation mode for and a brake release step.

ADVANTAGE OF THE INVENTION According to this invention, the manual operation of a worker in checking the braking force of a rope brake can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structural example of the elevator 1 in which the elevator maintenance operation control apparatus 10 which concerns on one Embodiment of this invention is mounted. 2 is a block diagram showing an internal configuration example of an elevator maintenance operation control device 10; FIG. It is a flow chart which shows an example of a processing procedure of rope brake function confirmation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The following description and drawings are examples for explaining the present invention, and are appropriately omitted and simplified for clarity of explanation. Also, not all combinations of features described in the embodiments are essential for the solution of the invention. The present invention is not limited to the embodiments, and all applications consistent with the idea of the present invention are included in the technical scope of the present invention. A person skilled in the art can make various additions and modifications within the scope of the present invention. The present invention can also be implemented in various other forms. Unless otherwise specified, each component may be singular or plural.

FIG. 1 is a diagram showing a structural example of an elevator 1 equipped with an elevator maintenance operation control device 10 according to an embodiment of the present invention.

As shown in FIG. 1, in an elevator 1, a main rope 2 is connected at one end to a car 3, passes through a hoist 4 installed in a machine room, and is connected at the other end to a counterweight 5. connected to A machine brake 6 and a rope brake 7 are installed as brake devices for braking the main rope 2 .

The machine brake 6 is a braking device that brakes the main rope 2 from which the car 3 is suspended, and is controlled by a machine brake control section (a machine brake control section 13 to be described later). In normal car operation, the rope brake 7 does not operate, and the car 3 is stopped by the machine brake 6. - 特許庁

On the other hand, the rope brake 7 functions as a door-open running protection device (UCMP) that operates to prevent the car 3 from running with the door open in an emergency caused by a failure of the drive or control equipment. It is a brake device, and is controlled by a control circuit (rope brake control unit, not shown) independent of the machine brake 6 . In the control circuit of the rope brake 7, rope brake braking conditions for automatically braking the rope brake 7 are determined in advance. Specifically, when the car 3 starts to move with the door open (which can be determined from the position or speed of the car 3), the control circuit automatically brakes the rope brake 7 so that the main rope 2 and To forcibly stop the movement of the car 3. Therefore, during normal car operation (normal operation mode), the rope brake 7 does not operate unless there is a failure in the drive device or control equipment.

The control panel 8 is a device for controlling the operation, speed, etc. of the elevator 1 . In FIG. 1, the elevator maintenance operation control device 10 according to the present embodiment is mounted as part of the control panel 8, but part or all of the internal configuration described later with reference to FIG. may be implemented as a separate device.

The structure of the elevator 1 shown in FIG. 1 is based on the structural example of a general rope-type elevator, but the structure of an elevator that can be equipped with the elevator maintenance operation control device 10 according to the present embodiment is The structure is not limited to this, and other structures may be used as long as the elevator is provided with the rope brake 7 .

FIG. 2 is a block diagram showing an internal configuration example of the elevator maintenance operation control device 10. As shown in FIG. As shown in FIG. 2, the elevator maintenance operation control device 10 includes an operation mode control unit 11, a door control unit 12, a machine brake control unit 13, a braking force determination unit 14, a machine brake braking determination circuit 15, and an alarm device 16. configured with

The operation mode control unit 11 has a function of controlling the operation mode of the elevator 1 . The operation modes of the elevator 1 include at least a "normal operation mode" that is selected during normal operation and a "rope brake function check operation mode" that is selected when checking the braking force of the rope brake 7 during maintenance and inspection. prepared. As described above, the rope brake 7 does not operate in the normal operation mode when there is no failure in the driving device or control equipment. On the other hand, the rope brake function confirmation operation mode is an operation mode in which the rope brake 7 is intentionally operated in order to confirm the braking force of the rope brake 7, and the details thereof will be described later with reference to FIG.

The door control unit 12 has a function of controlling opening and closing of the door of the car 3 . Although detailed description is omitted because it is not relevant to the present invention, the door control unit 12 may also have a function of controlling the opening and closing of the hall door, or the hall door that controls the opening and closing of the hall door. If a control unit is provided separately, it may be linked with this.

The machine brake control section 13 has a function of controlling the operation of the machine brake 6 . The machine brake control unit 13 may be realized by a brake control function that the control panel 8 generally has.

The braking force determination unit 14 measures the moving distance until the car 3 is stopped by the braking of the rope brake 7, calculates the braking force of the rope brake 7 based on this moving distance, and the braking force is a maintenance inspection item. It has the function of judging whether it satisfies the specified specified value. The braking force determination unit 14 can measure the moving distance of the car 3 based on the position information of the car 3 output from the position detection device 9 .

The position detection device 9 is a device for detecting the position of the car 3 and outputs position information representing the position of the car 3 . Specifically, the position detection device 9 is realized by, for example, an encoder installed in the motor of the hoisting machine 4, a distance sensor installed in the lower part of the car 3, or the like.

A machine brake braking determination circuit 15 determines whether or not predetermined braking conditions (machine brake braking conditions) in the rope brake function confirmation operation mode, which are predetermined for the machine brake 6, are satisfied. A circuit designed to automatically brake the machine brake 6 when conditions are met. Specifically, the machine brake braking condition is, for example, that the moving distance of the car 3 (moving time, moving speed, or a combination thereof) reached a predetermined reference value by traveling with the door open. Defined. Further, the machine brake braking determination circuit 15 may be designed to directly apply the machine brake 6 to the machine brake 6 when it is determined that the above-described machine brake braking condition is satisfied. It may be designed to output a signal to the machine brake control 13 .

The notification device 16 is a device that notifies the operator of the result of checking the function of the rope brake. As will be described later, when the braking force determination unit 14 determines that the function (braking force) of the rope brake 7 is abnormal in the rope brake function confirmation operation mode, the alarm device 16 determines that the function confirmation result of the rope brake is abnormal. Notify workers to that effect. In addition, when the braking force determination unit 14 determines that the function (braking force) of the rope brake 7 is normal, the alarm device 16 may notify that the function confirmation result of the rope brake is normal. .

The alarm device 16 notifies the worker of abnormality (or normality) by, for example, voice or warning sound, but the notification means is not limited to sound, and for example, notification by light emission, display of characters, etc. may be performed.

The above is the configuration of the elevator maintenance operation control device 10 according to the present embodiment. Next, rope brake function confirmation executed by the elevator maintenance operation control device 10 during maintenance and inspection of the elevator 1 will be described in detail with reference to FIG.

FIG. 3 is a flow chart showing an example of a processing procedure for confirming the rope brake function. The rope brake function confirmation shown in FIG. 3 is performed by the elevator maintenance operation control device 10 to automatically confirm the braking force of the rope brake 7 during maintenance and inspection of the elevator 1 without intervening a manual procedure by an operator. The rope brake function confirmation is started when the operator performs an operation to set the operation mode of the elevator 1 to the "rope brake function confirmation operation mode".

According to FIG. 3, first, the operation mode control unit 11 sets the operation mode of the elevator 1 to the rope brake function check operation mode according to the setting operation of the operation mode by the operator (step S1). It should be noted that the normal operation mode is assumed as the operation mode before setting.

Next, the door control unit 12 controls the door of the car 3 to be in an open state, and maintains this door open state thereafter (step S2). Note that the machine brake control unit 13 applies the machine brake 6 to stop the car 3 at the predetermined floor until step S2.

Next, the machine brake control section 13 releases the machine brake 6 (step S3). When the machine brake 6 is released in step S3, the braking force of the machine brake 6 is lost and the car 3 starts moving with the door open. As a result, since the door-open running occurs and the rope brake braking condition is satisfied, the control circuit (rope brake control section) of the rope brake 7 automatically brakes the rope brake 7 .

After a predetermined period of time has passed since the machine brake 6 was released in step S3, the braking force determination unit 14 determines that the car 3 is stopped by the rope brake 7 based on the position information of the car 3 obtained from the position detection device 9. It is determined whether or not it has stopped (step S4). If the car 3 has stopped (YES in step S4), the process proceeds to step S5, and if the car 3 has not stopped (NO in step S4), the process proceeds to step S8, which will be described later.

In addition, as shown in FIG. 3, the process of step S4 may be repeatedly executed, but the timing at which step S4 is first executed does not have to be interlocked with the braking timing of the rope brake 7 . If the first step S4 is executed before the rope brake 7 is braked, after a predetermined time (an interval different from the previous predetermined time) has passed from step S4 to step S8, Step S4 is executed again. However, in order to avoid an increase in the load due to such a loop, the time required after the machine brake 6 is released in step S3 until the rope brake 7 automatically brakes and stops the car 3 is estimated. The timing may be adjusted so that the first step S4 is executed near the stop timing.

In step S5, the braking force determination unit 14 measures the moving distance until the car 3 is stopped by the braking of the rope brakes 7, and the braking force of the rope brakes 7 calculated from this moving distance is determined by the maintenance and inspection items. Determines whether or not the defined value is satisfied. Then, when the determination result of the braking force of the rope brake 7 satisfies the specified value (YES in step S6), the process proceeds to step S7. On the other hand, if the specified value is not satisfied (NO in step S6), it can be determined that the braking force of the rope brake 7 is abnormal (the function of the rope brake 7 is abnormal). proceed to

"The braking force satisfies the specified value" basically means that the braking force is equal to or greater than the specified value, and "The braking force does not satisfy the specified value" means that the braking force Equivalent to being less than the value. However, as a modification, an upper limit value may be set for the braking force of the rope brake separately from the above specified value. If the braking force is out of the range from the prescribed value to the upper limit, it means that the braking force does not satisfy the prescribed value.

When the process proceeds to step S7, the braking force of the rope brake 7 satisfies the specified value, so the braking force determination unit 14 can determine that the function of the rope brake 7 is normal. Therefore, in this case, the operation mode control unit 11 returns the operation mode from the rope brake function confirmation operation mode to the normal operation mode (step S7), and terminates the rope brake function confirmation. At this time, the notification device 16 may notify the worker that the function check of the rope brake 7 has been completed normally.

On the other hand, if the determination in step S4 is NO and the process proceeds to step S8, the car 3 continues running with the door open. It is determined whether or not (step S8).

If the machine braking condition is not satisfied in step S8 (NO in step S8), the current free run is continued without performing any special control, and the process returns to step S4. As described above, the process of step S4 for the second and subsequent times is preferably executed after a predetermined period of time has elapsed since the previous execution timing of step S4.

If the machine brake braking condition is satisfied in step S8 (YES in step S8), the car 3 is not stopped normally by the rope brake 7, and the car 3 (main rope 2) is forcibly stopped by the machine brake 6. need to stop. Therefore, the machine brake braking determination circuit 15 automatically brakes the machine brake 6 (step S9) to forcibly stop the car 3 running with the door open.

It should be noted that, at the time when it is determined YES in step S8, the rope brake 7 cannot normally stop the car 3 running with the door open, so the braking force determination unit 14 determines that the braking force of the rope brake 7 is abnormal. (the function of the rope brake 7 is abnormal).

That is, when the determination in step S6 is NO, and when the determination in step S8 is YES and the process of step S9 is performed, the braking force determination unit 14 determines that the braking force of the rope brake 7 is abnormal. It is determined that In these cases, in the next step S10, the notification device 16 notifies the operator of the abnormality of the rope brake 7, and the rope brake function confirmation by the elevator maintenance operation control device 10 ends.

Note that after the notification is given in step S10, the operator performs maintenance work on the rope brake 7, and when it is confirmed that there is no problem with the braking force of the rope brake 7 after the work, the rope brake function confirmation operation is performed. The mode should be canceled and the operation mode should be returned to the normal operation mode.

By performing the processing shown in FIG. 3 as described above, the elevator maintenance operation control device 10 automatically checks whether the braking force of the rope brake 7 is normal in the rope brake function confirmation operation mode. manual operations by workers can be reduced. Specifically, at least the release of the machine brake 6 from the door open standby performed in steps S2 to S3 and the automatic braking of the machine brake 6 performed in steps S8 to S9 were conventionally performed manually by an operator. However, the elevator maintenance operation control device 10 according to the present embodiment can automate these. Therefore, according to the elevator maintenance operation control device 10 according to the present embodiment, in the maintenance and inspection work of the elevator 1, it is possible to reduce the burden on the operator and improve the work efficiency.

As a modification of FIG. 3, after the machine brake braking determination circuit 15 brakes the machine brake 6 in step S9, the braking force determination unit 14 measures the moving distance until the car 3 stops, and measures this moving distance. Based on the distance, it may be determined whether or not the braking force of the machine brake 6 satisfies a specified value (checking the braking force of the machine brake 6). The method for confirming the braking force of the machine brake 6 may be considered to be the same as the braking force determination for the rope brake 7 performed in step S5, and detailed description thereof will be omitted. When configured in this manner, the elevator maintenance operation control device 10 can confirm not only the braking force of the rope brake 7 but also the braking force of the machine brake 6, thereby further reducing the burden on workers during maintenance and inspection work. It can be reduced and work efficiency can be further improved.

It should be noted that each of the configurations, functions, processing units, processing means, etc. described above may be realized by hardware, for example, by designing a part or all of them using an integrated circuit. Moreover, each of the above configurations, functions, etc. may be realized by software by a processor interpreting and executing a program for realizing each function.

Further, in the drawings, control lines and information lines are shown as necessary for explanation, and not all control lines and information lines are necessarily shown on the product. In fact, it may be considered that almost all configurations are interconnected.

1 Elevator 2 Main Rope 3 Car 4 Hoist 5 Counterweight (Balance Weight)
6 Machine brake 7 Rope brake 8 Control panel 9 Position detection device 10 Elevator maintenance operation control device 11 Operation mode control unit 12 Door control unit 13 Machine brake control unit 14 Braking force determination unit 15 Machine brake braking determination circuit 16 Alarm device

Claims (8)

An elevator maintenance operation control device for performing maintenance and inspection of an elevator provided with a rope brake that automatically brakes the door-open running of the car,
a door control unit for controlling the opening and closing of the car door;
a machine brake control unit that controls the operation of the machine brake that brakes the main rope;
with
In a specific operation mode for checking the function of the rope brake, the door control unit opens the car door, and while the door is maintained in the open state, the machine brake control unit releases the machine brake. An elevator maintenance operation control device characterized by: Further comprising a braking force determination unit that determines the braking force of the rope brake,
The braking force determination unit determines that the braking force of the rope brake is normal when the braking force of the rope brake that stops the car traveling with the door open after the machine brake is released satisfies a specified value. The elevator maintenance operation control device according to claim 1, characterized in that it is determined that there is. further comprising a machine brake braking determination circuit designed to brake the machine brake when a predetermined braking condition relating to the state of the car after the machine brake is released in the specific operating mode is satisfied. The elevator maintenance operation control device according to claim 2. 4. The elevator maintenance operation control device according to claim 3, wherein the braking condition is set based on at least one of a moving distance, a moving time, and a moving speed of the car during running with the door open. The braking force determination unit determines whether the braking force of the rope brake that stopped the car traveling with the door open does not satisfy the specified value, and when the braking condition is satisfied and the machine brake is applied. 4. The elevator maintenance operation control device according to claim 3, wherein the braking force of the rope brake is determined to be abnormal. 3. The elevator maintenance operation control apparatus according to claim 2, further comprising an alarm device that outputs a function confirmation result of the rope brake according to a determination result of the braking force determination unit. further comprising an operation mode control unit for controlling the operation mode of the elevator,
The operation mode control unit switches the operation mode from the normal operation mode to the specific operation mode when starting to check the function of the rope brake. The elevator maintenance operation control device according to claim 2, wherein the operation mode is switched to the normal operation mode after determining that the power is normal. An elevator maintenance and operation control method by an elevator maintenance and operation control device for performing maintenance and inspection of an elevator provided with a rope brake for automatically braking a car door-open running, comprising:
The elevator maintenance operation control device has a door control unit that controls opening and closing of the car door, and a machine brake control unit that controls the operation of the machine brake that brakes the main rope,
In a specific operation mode for checking the function of the rope brake,
a door opening step in which the door control unit maintains the car door in an open state;
a machine brake release step in which the machine brake control unit releases the machine brake after the door opening step;
An elevator maintenance operation control method, comprising:

Images