JP2024004768A - Parent rope attachment and detachment monitoring device - Google Patents

Abstract

To provide a main rope attachment/detachment monitoring apparatus which can constitute an apparatus that considers safety while reducing such a situation that a warning is continuously output at a relatively low cost.SOLUTION: A main rope attachment/detachment monitoring apparatus 1 comprises: main rope detection means (photoelectric sensor 12) which detects whether or not a main rope is attached to a main rope holding metal fitting that is detachably attached to the main rope for fall prevention of a worker; warning means (buzzer part 112) which outputs a warning when the main rope detection means detects that the main rope is not attached; an alarm switch 13 which performs turn-on/turn-off of the warning means; and warning-on notification means (red LED tape light 15) which notifies that the alarm switch 13 is turned on.SELECTED DRAWING: Figure 3

Description

The present invention relates to a main rope attachment/detaching monitoring device for monitoring the attachment state of a main rope gripping fitting to a main rope for preventing workers from falling.

Conventionally, in order to prevent workers working on slopes or high places from falling, a full harness safety belt worn by the worker is connected to a main rope.
It is very important to check whether there is a connection to the main rope.
Patent Document 1 discloses a technique related to a device that detects hooking of a safety belt when the connection to the main rope is performed by hooking.

Japanese Patent Application Publication No. 2015-204997

A device for checking the presence or absence of a connection to the main rope (hereinafter referred to as a "main rope attachment/disconnection monitoring device") is configured to output an alarm if the main rope is not connected.
However, it is not always necessary for the worker to connect to the main rope, and it is troublesome that the alarm continues to be output even in situations where the worker does not need to be connected to the main rope, and the alarm is output frequently. As a result, there is a risk that the original warning function may deteriorate as people become accustomed to the warning. Therefore, it is desirable to prevent the alarm from being output in situations where connection with the master rope is unnecessary (situations where an alarm is unnecessary).
Patent Document 1 discloses a technology in which a management area is provided and monitoring (and alarm) of the attachment of the main rope is switched on and off based on people entering and leaving a gate provided in the management area.
However, just because a person is within the management area does not mean that the person is always in a situation where connection with the main rope is required, and therefore this is not sufficient to solve the above problem. Additionally, depending on the site, it may be difficult or impractical to establish a controlled area (by covering the surrounding area and limiting access to a gate (exit/entrance)) (if it is environmentally difficult or not economically viable). ).

In view of the above points, an object of the present invention is to provide a main rope attachment/detachment monitoring device that can be configured at a relatively low cost while reducing the continuous output of alarms and taking safety into account. shall be.

(Configuration 1)
a master rope detection means for detecting whether or not a master rope is attached to a master rope gripping bracket that is removably attached to the master rope to prevent workers from falling; an alarm means for outputting an alarm when it is detected that the alarm is not installed; an alarm switch for turning on and off the output of the alarm; and an alarm on/off notification means for notifying the on or off state of the alarm switch. A main rope attachment/detachment monitoring device comprising:

(Configuration 2)
The main rope according to configuration 1, wherein the alarm on/off notification means is constituted by a light emitting part, and the light emitting part is attached to a lanyard that connects the main rope gripping fitting to a full harness safety belt worn by the worker. Attachment and detachment monitoring device.

(Configuration 3)
The main leash attachment and detachment monitoring device according to configuration 2, wherein the light emitting unit is constituted by a plurality of light emitters, and the plurality of light emitters are arranged in a spiral around the lanyard.

(Configuration 4)
The main rope attachment notification light emitting part is further provided with a main rope attachment notification light emitting part whose light emitting state changes based on the detection of whether or not the main rope is attached by the main rope detection means, and the main rope attachment notification light emitting part is attached to the lanyard. 2 or configuration 3.

(Configuration 5)
5. The master rope attachment/detachment monitoring device according to any one of configurations 1 to 4, wherein the alarm switch is attached to the lanyard.

(Configuration 6)
The main rope detection means is constituted by a photoelectric sensor that detects reflected light from the main rope, and when the main rope gripping metal fitting is not attached to the main rope, the photoelectric sensor detects the light reflected from the main rope gripping metal. 6. The main line attachment/detachment monitoring device according to any one of configurations 1 to 5, comprising an anti-reflection means for preventing reflected light from being detected.

(Configuration 7)
The master rope gripping fitting includes a master rope insertion part through which the master rope is inserted, and a clamp part that clamps the master rope inserted into the master rope insertion part, and the photoelectric sensor is attached to the clamp part. The main rope attachment/detachment monitoring device according to configuration 6, wherein the anti-reflection means is provided in the main rope insertion portion.

(Configuration 8)
8. The main rope attachment and detachment monitoring device according to configuration 6 or 7, wherein the anti-reflection means is configured by painting a member facing the photoelectric sensor with a low-reflection paint.

(Configuration 9)
A monitoring method for monitoring the state of attachment of a main rope gripping fitting to a main rope for preventing workers from falling, the method comprising main rope detection for detecting whether or not a main rope is attached to the main rope gripping fitting. a step of outputting an alarm from the alarm means when the means detects that the main rope is not attached; and an alarm on/off notification means for indicating the on or off state of the alarm switch that turns on and off the output of the alarm. A method for monitoring attachment and detachment of a parent rope, the method comprising: outputting an output from the main line.

(Configuration 10)
The method for monitoring attachment and detachment of a parent rope according to configuration 9, wherein the light emitting state of the parent rope attachment notification light emitting unit is changed based on the detection of whether or not the parent rope is attached by the parent rope detection means.

According to the main rope attachment/detachment monitoring device of the present invention, it is possible to construct a device that takes safety into account while reducing the continuous output of alarms at a relatively low cost.

A diagram schematically showing a parent rope attachment/detaching monitoring device according to an embodiment of the present invention. A diagram schematically showing the main rope gripping fitting of the embodiment A block diagram showing an outline of the configuration of a parent rope attachment/detachment monitoring device according to an embodiment A diagram showing an outline of the operation of the parent rope attachment/detaching monitoring device according to the embodiment A flowchart showing an outline of the processing operation of the parent rope attachment/detaching monitoring device according to the embodiment

Embodiments of the present invention will be specifically described below with reference to the drawings. Note that the following embodiment is one form of embodying the present invention, and does not limit the present invention within its scope.

FIG. 1 is a diagram schematically showing a main rope attachment/detachment monitoring device according to an embodiment of the present invention, FIG. 2 is a diagram schematically showing a main rope gripping fitting, and FIG. 3 is a diagram schematically showing a main rope attachment/detachment monitoring device of an embodiment. FIG. 2 is a block diagram schematically showing the configuration of.
The main rope attachment/detachment monitoring device 1 of the present embodiment is a device for monitoring the attachment state of a main rope gripping metal fitting to a main rope to prevent workers working on slopes or the like from falling.
As shown in FIG. 3, the parent rope attachment/detachment monitoring device 1
A photoelectric sensor 12 serving as a main rope detection means for detecting whether or not the main rope is attached to a main rope gripping fitting that is detachably attached to the main rope;
The main body includes a control section 111 that controls each part, and a buzzer section 112 that is an alarm means that outputs an alarm when the main rope detection means (photoelectric sensor 12) detects that the main rope is not attached. Part 11 and
an alarm switch 13 that turns on and off the alarm (output of alarm sound) of the alarm means (buzzer section 112);
A green LED tape light 14, which is a main rope attachment notification light-emitting part, whose light emitting state changes based on the detection of the presence or absence of the main rope attachment by the main rope detection means (photoelectric sensor 12);
a red LED tape light 15 serving as an alarm on notification means for notifying that the alarm switch 13 is on;
It is equipped with

The main body 11 includes a control section 111 made up of a microcomputer or the like, and a buzzer section 112 made up of a speaker or the like.
The control unit 111 uses a driver for causing the green LED tape light 14 and the red LED tape light 15 to emit light, a driver for outputting an alarm sound from the buzzer unit 112, a sensor value input from the photoelectric sensor 12, and an alarm switch. It is equipped with a circuit that A/D converts the input, an arithmetic circuit that performs various calculations, etc. Note that the control unit 111 may have each function configured by software on a general-purpose device such as a microcomputer, each function may be configured as a dedicated circuit, or a combination thereof. It may consist of:
The main body part 11 is worn and used by the worker in any manner (for example, by putting it in a pocket, fixing it to a belt or full harness safety belt, etc.).
Although not shown in the drawings, a power source is naturally provided, and the power source (battery) may be built into the main body 11 or may be configured separately from the main body 11. It may also be used in connection with. If it is separate from the main body 11, it can be worn by the worker in any way (for example, put it in a pocket, fasten it to a belt or full harness safety belt, etc.) in the same way as the main body 11. .

As shown in FIGS. 1 and 2, the photoelectric sensor 12 is attached to the master rope gripping fitting 2 and irradiates light onto the master rope MR at the location where the master rope MR is attached, and detects the reflection from the master rope MR. This is a master rope detection means that detects whether the master rope MR is attached or not by detecting light. is visible, but there are no other members on the optical axis of the light source of the photoelectric sensor 12 up to the main rope MR).
As shown in FIG. 2, the master rope gripping fitting 2 includes a master rope insertion part 21 through which the master rope MR is inserted, and a clamp part 22 which clamps the master rope MR inserted into the master rope insertion part 21. It is equipped with When pulled by the lanyard connected to the clamp part 22 and moved upward, it can slide against the master rope MR, while when pulled downward, the clamp part 22 clamps the master rope MR. It is designed so that it does not slide (this prevents it from falling).
The photoelectric sensor 12 is provided in the clamp part 22 so as to face the master rope MR inserted into the master rope insertion part 21 (it can irradiate light onto the master rope MR and receive the reflected light).
Note that the photoelectric sensor 12 may be any sensor that is installed so as to irradiate light onto the master rope attached to the master rope gripping fitting and receive the reflected light. As the main rope gripping fitting itself, for example, any conventionally used main rope holding fitting can be used, so a detailed explanation of the main rope holding fitting itself will be omitted here.
In this embodiment, a photoelectric sensor is used as an example of the main rope detection means for detecting whether or not the main rope is attached, but the present invention is not limited to this. Any sensor capable of detecting the presence or absence of attachment may be used.

A portion of the main rope gripping fitting 2 facing the photoelectric sensor 12 (main rope insertion portion 21) is coated to prevent reflection. When the main rope MR is not attached, the main rope gripping fitting 2 reflects the irradiated light from the photoelectric sensor 12, resulting in a false detection that "the main rope MR is attached". This is to reduce the Painting is performed using a low-reflection paint (for example, matte black) that hardly reflects light.
That is, ``reflection prevention means for preventing reflected light from the main rope gripping metal fittings from being detected by the photoelectric sensor when the main rope gripping metal fittings are not attached to the main rope'' is provided, and `` An anti-reflection means is provided in the main rope insertion part, and an anti-reflection means is constructed by coating the member facing the photoelectric sensor with a low-reflection paint.
Note that "reflection prevention means" include providing a member that is difficult to reflect light, painting it, and also using a member that changes the angle of the reflected light or changing the light so that the reflected light does not reach the photoelectric sensor 12. It may be constituted by a member that causes confusion.

In this embodiment, a sensor cover 16 is provided to surround the photoelectric sensor 12. In the environment in which the main rope gripping fitting 2 is used at a work site, it is relatively easy for objects such as other safety equipment to collide with each other, and this is intended to reduce damage and staining of the photoelectric sensor 12 due to such contact. .

The alarm switch 13 allows a worker to turn on and off the output of the alarm sound from the buzzer section 112.
Even during work, it is not always necessary for the worker to be connected to the main line, and it is preferable that the alarm continues to be output even in situations where connection to the main line is not required. Therefore, workers can turn off the alarm (alarm sound) by themselves in unnecessary situations.
In this embodiment, the alarm switch 13 is attached to a lanyard 4 that connects the full harness safety belt 3 worn by the worker and the main rope gripping fitting 2. Note that the alarm switch is not limited to those that can be attached to a lanyard, but may be attached to any location, such as those that have an alarm switch on the main body, or those that can be attached to a full harness safety belt. .

The green LED tape light 14, which is a light emitting unit for notifying the attachment of the master rope, flashes and emits light (green) when the master rope detection means (photoelectric sensor 12) determines that the master rope MR is attached. If it is determined that there is no light, the light is turned off (light emission and light extinction are controlled by the control unit 111).
The green LED tape light 14 (main rope attachment notification light emitting unit) is attached to the lanyard 4, and is attached so as to be wound around the lanyard 4 in a spiral manner. Thereby, a plurality of light emitters (LEDs) are arranged in a spiral around the lanyard 4. By arranging the plurality of light emitters in a spiral pattern, the light emitting state can be easily recognized regardless of the orientation of the lanyard 4.
In this embodiment, a transparent tube as a protective cover is provided to cover the green LED tape light 14 (and the red LED tape light 15) spirally attached to the lanyard 4.
Note that this example uses a device that emits green light (flashing) when it is determined that the main rope is attached, but the emitting action and color of the emitted light may be difficult to tell the worker or others to attach the main rope. Any method that allows the presence or absence to be recognized may be used. For example, the light may turn off when the main rope is attached, and blink red when the main rope is not attached. However, it is more preferable to output the safe state by emitting light or the like as in this embodiment than to output the dangerous state (when the main rope is not attached) by emitting light or the like. This is to work on the safe side in case of problems such as the failure of light emission or other output due to a dead battery or malfunction.

The red LED tape light 15, which is a light emitting unit serving as an alarm-on notification means, flashes (red) when the output of the alarm sound is turned on by the alarm switch 13, and turns off when it is turned off. (Emission and extinguishment of light are controlled by the control unit 111).
Like the green LED tape light 14, the red LED tape light 15 is attached to the lanyard 4, and is attached so as to be wound around the lanyard 4 in a spiral shape (so that it does not overlap with the green LED tape light 14). wrapped). Thereby, a plurality of light emitters (LEDs) are arranged in a spiral around the lanyard 4.
Note that this example uses a device that emits red light (flashing) when the output of the alarm sound is on, but the lighting operation and color of the light may be such that the worker or others can recognize whether the alarm sound is on or off. Any method that can be used may be used.
In addition, in this embodiment, an example of the alarm on/off notification means is described as an alarm on notification means that notifies when the output of the alarm sound is on, but an alarm off notification means that notifies when the output of the alarm sound is off. It may also be a notification means.
However, it is more preferable to output the safe state by emitting light or the like, as in this embodiment, than to output the caution-required state (when the output of the alarm sound is off) by emitting light or the like. This is to work on the safe side in case of problems such as the failure of light emission or other output due to a dead battery or malfunction.

In addition, in this embodiment, the green LED tape light 14 and the red LED tape light 15 are attached to the lanyard 4 in a spiral shape, but the present invention is not limited to this. The tape light 14 and the red LED tape light 15 may be attached parallel to each other along the lanyard 4.
In addition, in this embodiment, the main rope attachment notification light emitting part and the alarm ON notification means are provided in the lanyard, but the present invention is not limited to this, and the main rope attachment notification light emitting part and the alarm ON notification means are provided on the lanyard. The notification means may be placed in other places, for example, in a conspicuous place such as a full harness safety belt, a helmet, etc. (or a plurality of these places).
In addition, in FIG. 3 etc., each configuration is shown as being connected by wire, but the present invention is not limited to each configuration being connected by wire; (a combination of configurations) may be connected wirelessly (in that case, a power supply unit would be provided for each individual configuration to be wirelessly connected).

FIG. 4 is a diagram schematically showing the operation of the main rope attachment/detaching monitoring device 1 of this embodiment.
The top row of the figure shows the determination result of whether or not the main rope MR is attached, which is determined by the control unit 111 based on the sensor value from the photoelectric sensor 12, and "ON" means that the main rope MR is attached. , "OFF" means that the master rope MR is not attached.
In the second stage, the output of the alarm sound by the alarm switch 13 is on/off; "ON" means the alarm sound is on, and "OFF" means the alarm sound is off.
The third row shows the output state of the alarm sound from the buzzer unit 112, where "ON" is the output of the alarm sound, and "OFF" is the alarm sound off. As can be understood from the figure, when it is turned off by the alarm switch 13, the alarm sound is off, and when it is determined that the master rope MR is not attached with the alarm switch 13 turned on ( An alarm sound is output in the top row (OFF).
The fourth row shows the light emission (blinking) state of the LED of the green LED tape light 14, and "ON" indicates light emission (flashing), and "OFF" indicates light-emission. As can be understood from the figure, the operation is synchronized with the determination of whether or not the master rope MR is attached (top row).
The fifth row shows the state of light emission (blinking) of the LED of the red LED tape light 15, and "ON" indicates light emission (flashing), and "OFF" indicates the light is turned off. As can be understood from the figure, the operation is synchronized with the output on/off (second stage) of the alarm sound by the alarm switch 13.

FIG. 5 is a flowchart for explaining the outline of the processing operation (processing executed by the control unit 111) of the parent rope attachment/detaching monitoring device 1 of this embodiment.

In step 501, the on/off state of the alarm switch 13 is determined, and if it is off, the process moves to step 503 and each LED of the red LED tape light 15 is turned off, while if it is on, Proceeding to step 502, each LED of the red LED tape light 15 is made to blink (red).

In step 504, it is determined whether the sensor value from the photoelectric sensor 12 is greater than or equal to a predetermined threshold (that is, whether or not the main rope MR is attached), and if it is greater than the threshold (if the main rope is attached) ), the process moves to step 506, and each LED of the green LED tape light 14 is made to blink (green).
On the other hand, if it is less than the threshold value (if the main rope is not attached), the process moves to step 505 and each LED of the green LED tape light 14 is turned off. Further, in step 507, the on/off state of the alarm switch 13 is determined, and if it is on, the process moves to step 508, and the buzzer unit 112 outputs an alarm sound.
After step 506, the process returns to step 501 and repeats the above process. Similarly, if the result of the determination in step 507 is that the alarm sound is off, or after step 508, the process returns to step 501 and repeats the above process. By repeating the above process, each LED continues to emit light (flashing) or goes out, and continues to output the alarm sound, or stops outputting the alarm, depending on the respective situation, resulting in the operation shown in Figure 4. becomes.

As described above, according to the main rope attachment/detachment monitoring device 1 (or the main rope attachment/detachment monitoring method) of the present embodiment, by allowing the worker to turn on/off the alarm sound, unnecessary alarms continue to be output. is reduced. This improves convenience. Further, by frequently outputting unnecessary alarms, the user becomes accustomed to the alarms, thereby reducing the deterioration of the original warning function (that is, improving safety).
Furthermore, by providing the alarm on notification means for notifying that the alarm switch is on, it is possible to reduce the possibility of the alarm sound being erroneously turned off even in a necessary situation. This improves safety.
Since the configuration of the parent leash attachment/detaching monitoring device 1 of this embodiment is realized with a relatively simple configuration, it is possible to provide a device that takes both convenience and safety into consideration at a relatively low cost. .

Furthermore, according to the main rope attachment/detachment monitoring device 1 of the present embodiment, since the presence or absence of the main rope attachment is determined by a photoelectric sensor that does not make contact with the main rope, for example, contact with the main rope may occur with a contact sensor. This is preferable since there is no influence of wear due to friction, and there is no catch when sliding the main rope gripping fitting against the main rope.

According to the main rope attachment and detachment monitoring device 1 of the present embodiment, "to prevent reflected light from the main rope gripping metal fittings from being detected by the photoelectric sensor when the main rope gripping metal fittings are not attached to the main rope. The provision of "anti-reflection means" reduces false detections caused by reflected light that is not caused by the main rope.
Additionally, false detections due to reflected light not caused by the main rope are reduced, so the light-receiving sensitivity of the photoelectric sensor can be maximized. The main rope is basically white, but in the working environment it tends to get dirty and darken (reflectance decreases). In contrast, by maximizing the light-receiving sensitivity of the photoelectric sensor (this is possible due to the presence of anti-reflection means), it is possible to detect whether or not the main rope is attached even if the reflectance of the main rope is reduced due to dirt, etc. It is possible to do so.
In this embodiment, since the anti-reflection means is constructed by painting with matte black or the like, it is also advantageous in that it can be applied easily and at low cost to existing master rope gripping fittings.

In addition, in the embodiment, the presence or absence of the main rope attached is detected by irradiating light onto the main rope attached to the main rope gripping fitting and receiving the reflected light (if reflected light is obtained, the main rope is Although the present invention is not limited to this, the present invention is not limited to this example. For example, a configuration may be adopted in which there is a reflective part at a location facing the photoelectric sensor, and when the main rope is attached to the main rope grip, the light is blocked and the amount of reflected light received decreases (the amount of light received is If the line is low, it is determined that there is a parent line). However, in this case, if the amount of light received decreases due to dirt on the photoelectric sensor or reflective part, it will falsely detect that the main rope is attached (dangerous) even though the main rope is not attached. There is a risk of false detection of the side. In contrast, the method of the embodiment is more suitable because false detection occurs on the safe side. At a work site, it is unavoidable that each member gets dirty, and it is beneficial to be on the safe side if erroneous detections due to dirt or the like occur.

In the embodiment, a green LED tape light 14 is used as a means for notifying the attached state of the main rope, but the present invention is not limited to this, and the present invention is not limited to this, and the present invention is not limited to this. Any means by which the person can be recognized may be used. For example, it is possible to use something other than an LED as a light emitting body, to use a light emitting body with different emission colors or patterns, or to use only one light emitting body. Further, instead of the notification using light, notification using sound or vibration may be used. In addition, it may be configured by a transmitter that transmits information to another device. In addition, in the embodiment, an example is given in which an LED tape light is used so that it is easy to add LEDs to an existing lanyard. It goes without saying that it may be something like the one provided in .
The above points also apply to the red LED tape light 15 which is the alarm-on notification means.
Further, although the green LED tape light 14 and the red LED tape light 15 are attached to the lanyard 4 as an example, the present invention is not limited to this, and may be placed in any place where the person or another person can recognize them. For example, a light emitting part or the like may be provided in a full harness safety belt, etc. However, if a light emitting part is provided on a full harness safety belt, it may be difficult for the person in question to recognize (hard to see), so it is preferable to provide it on a lanyard as in this embodiment. Of course, it may be provided in multiple locations, such as in both the lanyard and the full harness safety belt.

In the embodiment, the buzzer unit 112 is described as an example of an alarm unit that outputs an alarm when it is detected that the main rope is not attached. However, the present invention is not limited to this, and the alarm can be sent to Alternatively, any means that can be recognized by others may be used. For example, it may be possible to make the light emitting part blink violently, or to notify by vibration. In addition to these, the alarm information may be sent to another device (for example, a device owned by the administrator) to notify the administrator, for example.

1. ．． ．． Parent rope attachment and detachment monitoring device 12. ．． ．． Photoelectric sensor (main line detection means)
13. ．． ．． Alarm switch 14. ．． ．． Green LED tape light (light emitting part for notifying the attachment of the main rope)
15. ．． ．． Red LED tape light (alarm on/off notification means)
112. ．． ．． Buzzer part (alarm means)
2. ．． ．． Main rope gripping fitting 21. ．． ．． Main rope insertion part 22. ．． ．． Clamp part 3. ．． ．． Full harness safety belt 4. ．． ．． Lanyard MR. ．． ．． Parent rope

Claims (3)

a master rope detection means for detecting whether or not the master rope is attached to a master rope gripping fitting that is detachably attached to the master rope to prevent workers from falling;
Alarm means for outputting an alarm when the main rope detection means detects that the main rope is not attached;
an alarm switch that turns on and off the output of the alarm;
alarm on/off notification means for notifying the on or off state of the alarm switch;
A main line attachment and detachment monitoring device equipped with: The main rope detection means is constituted by a photoelectric sensor that detects reflected light from the main rope, and when the main rope gripping metal fitting is not attached to the main rope, the photoelectric sensor detects the light reflected from the main rope gripping metal. 2. The master rope attachment/detachment monitoring device according to claim 1, further comprising anti-reflection means for preventing reflected light from being detected. The master rope gripping fitting includes a master rope insertion part through which the master rope is inserted, and a clamp part that clamps the master rope inserted into the master rope insertion part,
3. The main rope attachment and detachment monitoring device according to claim 2, wherein the photoelectric sensor is provided in the clamp section, and the anti-reflection means is provided in the main rope insertion section.

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