JP2015204999A - Slide type hooking height state detection tool and safety belt having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hooking height state detection tool and a safety belt having the same which can detect a hooking height and determine normality or abnormality on the basis of a fact that there is a sag due to the deadweight of a rope.SOLUTION: A slide type hooking height state detection tool comprises position setting means placed on a rope for indicating a position of the rope in a lengthwise direction, and a slide device including slide means which slides on the rope freely and stops at the lowest point of the rope due to the deadweight. A hooking height state is determined by the position of the slide means.

Description

The present invention relates to a hook-hung height detector for detecting the height of a safety belt hook for preventing falling during work at a high place, and the rope position stayed by sliding on the rope by its own weight. The present invention relates to a detection tool for detecting a hook and determining a hooking height state, and a safety belt provided with the detection tool.

In high-altitude work, it is decided to attach a safety belt to the body and hang the hook attached to the tip of the belt from the belt via a rope (string) to the master rope or other fixed object. Yes. It is important for safety to hook the hook higher than the waist position, and Patent Document 1 is found for this detection. This is established as a right, but it is as follows. The thing of patent document 1 is shown in FIG. In claim 1 of this document, “provided in a safety belt composed of a hook removably connected to the support portion, a belt worn by an operator, and a rope connecting the belt and the hook, A safety belt check device for checking a hook mounting state, which differs depending on a device main body, a first sensor for detecting a predetermined axial direction of the device main body based on a vertical direction, and a detection result of the first sensor. A display device that operates, and an attachment that removably attaches the device main body to the rope by being wound around the rope so that a predetermined axial direction of the device main body is parallel to the rope. The safety belt check device, wherein the first sensor and the display device are integrally provided in the device main body. The safety belt check device according to claim 1, wherein when the axial direction of the body is within a predetermined angle range that is angularly moved with respect to the vertical direction, the orientation of the device main body is set to a normal state. This is shown in 6-A of FIG.
In claim 1, "a first sensor that detects a predetermined axial direction of the apparatus main body with reference to a vertical direction", and in claim 2, "a predetermined sensor in which the axial direction of the apparatus main body is angularly moved with reference to the vertical direction" When the angle is within the angle range, the orientation of the device main body is in a normal state. Furthermore, in paragraph No. 0008 of Patent Document 1, the axial direction of the device main body detected by the first sensor, that is, the direction of the rope is based on the vertical direction. Is set as a normal range when the angle is moved within the predetermined angle range, and is set as an abnormal state when the angle is out of the predetermined angle range. A drawing of -A is shown. 6-B is shown as a normal case where the height of the hook hook is high and 6-C is shown as an abnormal case where the height of the hook hook is low.
From these words and figures, if the height position of the hook hook is certainly high, the normal range (not described, for example, within the predetermined angle range that is angularly moved with respect to the vertical direction, for example, It can be understood that there will be ± 60 degrees with respect to the vertical direction. This is because the tip of the hook faces the vertical direction like 6-B if it is normal in the hooked state. Accordingly, the rope connected to the hook is also directed in the vertical direction. As a result, the first sensor determines whether the detection result is normal based on the vertical direction. This means that this device is provided near the hook of the rope like 6-A.
It was meaningful to detect by replacing the hook height with the angle.
However, when I actually tried this, I found that it had the following blind spots and had a disadvantage that I could not use. Each of 6-D and 6-E shows a state where a hook is hung on a parent rope lower than the waist position. Since it is lower than the waist position, both are abnormally hung.
However, in 6-D, the distance between the master rope 610 and the connecting portion 621 (D-shaped ring) of the rope 630 of the belt 620 attached to the waist is small, and the first sensor 650 faces upward. The angle with respect to the vertical direction of the first sensor 650 is in the normal range, and in 6-E, the connecting portion 621 (D-shaped ring) between the master rope 310 and the rope 630 of the belt 620 attached to the waist Since the first sensor 650 is directed downward from the horizontal, the angle based on the vertical direction of the first sensor 640 results in an abnormal range. In this way, even if the hook hook height is the same, only the distance between the connecting portion 621 (D-shaped ring) and the master rope 610 is different, and the angle of the first sensor 640 is different. I can't judge because I can't show it clearly. This is a result of not considering the phenomenon that the rope 630 hangs down due to its own weight, and a device that takes into account the sag due to the rope's own weight has become essential.
In Patent Document 2, it is proposed that a third sensor, which is an acceleration sensor for detecting the attitude of the hook, is attached to the hook to detect a change in inclination with respect to the vertical direction. Since the situation is exactly the same, details are omitted.

Japanese Patent No. 5307654 Patent No. 5079637

An object of the present invention is to provide a hook height state detector that can detect the normality / abnormality by detecting the height of the hook hook even in such a case, in light of the fact that the rope hangs down due to its own weight. It is to provide a safety belt.

The slide-type hook-hanging state detector according to the present invention is a position setting means on the rope, which indicates the position in the length direction of the rope, and freely slides and moves on the rope. And a slide device including a slide means that stops at the position, and the hooking height state is determined based on the position of the slide device in the longitudinal direction on the rope.
Hereinafter, it describes along a claim.

The invention according to claim 1 is a sliding hook hook height state detector,
A safety belt having a belt for supporting the human body of the worker, a rope coupled to the belt via a connection portion, and a hook coupled to the other end of the rope and hooked on the support, or the worker A belt for supporting the human body, a hook coupled to the belt via a connecting portion, a rope coupled to the hook, and a support means for locking to a support provided at the other end of the rope. Providing for the rope in the safety zone,
Position setting means on the rope and indicating a position in the length direction of the rope;
A slide device having a hole through which the rope passes or a hook related to the rope, including a slide means that freely slides and moves on the rope and stops at the lowest point of the rope by its own weight;
And detecting a height state of the hook hanging on the support or a height state of the support means hanging on the support according to a longitudinal position of the slide device on the rope. It is possible to do that.

The invention described in claim 2 is the sliding hook height detecting device according to claim 1,
The position setting means is a part of the rope along the length direction with a magnetic material, or colored and colored in the length direction on the rope, or the length on the rope. It is characterized by having at least one of those given a line whose width changes in the direction or those given a line whose interval changes in the length direction on the rope.

The invention according to claim 3 is the sliding hook hook height state detection tool according to claim 1 or 2,
The slide device electrically detects the position setting means and specifies the position on the rope where the position setting means stays, and outputs from the first rope position detection means. And a normal / abnormality determination means for determining whether the height state of the hook is normal or abnormal based on a predetermined relationship between the position and a hook height state of the hook or support means on the support. It is characterized by having.

The invention according to claim 4 is the sliding hook height detecting device according to claim 3,
The position setting means is colored and color-coded in the length direction on the rope, and the first rope position detection means includes a light emitting means for irradiating light toward the rope, and the rope. A light receiving unit that receives reflected light that is reflected and returned, and a color filter that is provided on the optical path of the reflected light, and detects coloration on the rope.

The invention described in claim 5 is the sliding hook height detecting device according to claim 3,
The position setting means is one that has been given a line whose width changes in the length direction on the rope, or one that has been given a line whose interval changes, and the first position detection means on the rope is A light emitting means for irradiating light toward the rope; a light receiving means for receiving reflected light reflected by the rope; and a scanning means for scanning the light emitting means and the light receiving means. The irradiation light from the light emitting means traverses the line of the position setting means, the reflected light is received by the light receiving means, and the line width can be detected.

A sixth aspect of the present invention is the sliding hook-hanging height state detector according to any one of the third to fifth aspects,
One end of the rope is provided with a rope stretcher capable of adjusting the length of the rope by pulling out or rewinding the rope, and the rope stretcher can electrically detect the position setting means. By providing the second on-rope position detecting means, the first on-rope position detecting means obtained based on the position value obtained from the value of the on-rope position detected by the second on-rope position detecting means. The position value on the rope of the slide device is compared.

The invention according to claim 7 is a safety belt,
Position setting means on the rope for indicating the position in the length direction of the rope;
Slide hook hook height comprising a slide device having a hole through which the rope penetrates or a hook related to the rope, including a slide means that freely slides and moves on the rope and stops at the lowest point of the rope by its own weight A state detector,
A belt for supporting an operator's human body, the rope coupled to the belt through a connection portion, and a hook coupled to the other end of the rope and hooked on a support; A belt for supporting the human body, a hook coupled to the belt via a connecting portion, a rope coupled to the hook, and a support means for locking to a support provided at the other end of the rope. It is characterized by having.

Since it is configured as described above, the height of the hook is determined based on the position of the rope that the detection tool slides on the rope by its own weight and stops, so the position of the hook such as the master rope and the belt D Even if the distance between the ring portions is different, the determination result of normality and abnormality does not change, normal is normal, and abnormality can be determined as abnormal. This is important as a determination device.

It is a figure which shows one embodiment of the slide type hooking height state detection tool of this invention, and a safety belt provided with the same. It is a figure which shows one Embodiment of the position setting means for detecting the position on the rope of the slide type hooking height state detection tool of this invention. It is a figure explaining the function of the slide type hook hook height state detection tool of the present invention. It is a figure which shows another embodiment of the slide type hook hook height state detection tool of this invention. It is a figure which shows another embodiment of the slide type hooking height state detection tool of this invention, especially the embodiment in the case of using it for a retractor type rope stretcher. It is a figure explaining the conventional safety belt check apparatus.

The slide-type hook-hung height detector according to the present invention is located on the rope and moves freely by sliding on the rope with position setting means for indicating the position in the length direction of the rope. And a sliding device including a sliding means for stopping, and the hooking height state is determined based on the position of the sliding device in the length direction on the rope.
This will be described below with reference to the drawings.

FIG. 1 is a view showing an embodiment of a slide-type hooking height state detection tool of the present invention and a safety belt provided with the same.
The safety belt 100 includes a belt 110 that supports an operator's human body, a rope 130 coupled to the belt 110 via a connecting portion (D-shaped ring) 120, a hook 140 coupled to the other end of the rope 130, and the rope 130. Thus, a hook-hanging height state detector 150 that slides freely on the rope and stops at the lowest point of the rope due to its own weight is provided. The hook 140 is a well-known one that hangs on a solid object such as a master rope or a pipe.
Therefore, the sliding hook hook height state detector moves to the waist belt position if the hook position is higher than the waist belt position if the rope is not bent, and moves to the hook side if the hook position is opposite.
And if there is a deflection of the rope, it will move to the lowest bent point and stay. Here, if the hook position is higher than the waist belt position, the deflection position can be closer to the waist belt position, and vice versa. Therefore, if the position on the rope which stayed is seen, since this corresponds to the height of the hook hook, the hook hook height state can be detected.
FIG. 1 is the simplest of such slide-type hook-hanging height detectors, and is a case where an operator makes an artificial determination by detecting a position on a rope that has stayed visually. . In the example in the figure, the right half of the rope is not colored, and if the detection tool stays in this area, the hooking height is lower than the waist position, which is abnormal, and the left half of the rope If it is colored and the detection tool stays in this area, the hooking height is higher than the waist position, which is normal. In this example, the hooking height is indicated by a plurality of types of color coding.
Various position setting means other than color coding can be taken even with human-made artificial determination. Right or left from the middle. Next, some examples will be described.

FIG. 2 is a view showing an embodiment of the position setting means for detecting the position on the rope of the slide type hooking height state detection tool of the present invention.
2-A is an example in which a magnetic body is applied to a substantially half region from the middle to the waist position on the rope, and can be detected electrically.
Since 2-B has been described with reference to FIG.
In 2-C, there is no means on the hook side from the middle of the rope, but a line is applied to the waist position side in the length direction of the rope. If the line width is constant, it indicates only that the hooking position is normal, but if the line width changes linearly as shown in this figure, the position on the rope can be specified by the line width. Can be detected by continuous values other than normal / abnormal binary values. In 2-D, the position can be specified by the line interval by gradually changing the interval between the lines.
The above-described position setting means can be electrically detected in addition to being visually determined by an operator, and examples thereof are shown in FIG. Before that, the function of the sliding hook hook height state detector will be described with reference to FIG.

FIG. 3 is a diagram for explaining the function of the slide-type hooking height state detector of the present invention.
The right side is when the distance between the hook and the belt is large and the rope is not bent, and the left side is when the distance is small and the rope is bent, and the hook position is higher than the waist position in the upper, middle and lower stages. When the hook position is normal at the same height as the waist position, the case where the hook position is lower than the waist position is abnormal. The sliding hook hook height detector is indicated by a circle, but as shown in the position on the rope, if the right rope is not bent, if it is normal, the waist position can be changed from the middle of the rope. It is at the lowest point between them, and on the hook side when abnormal.
It accurately represents normality and abnormality.
When the rope on the left side is bent, it is at the lowest point between the middle of the rope and the waist position when it is normal, and at the lowest point between the middle and the hook side when abnormal. This also accurately represents normality and abnormality. In this way, even if the rope is bent, the sliding hook height detector can detect without being interrupted between normal and abnormal.

FIG. 4 is a diagram showing another embodiment of the sliding hook-hanging height state detector of the present invention,
This is an example in which position detection is performed electrically. In 4-A,
The slide-type hook hook height state detection tool is provided on the rope 130, and a position setting means 4100 set corresponding to the position on the rope, and a position detection slide device that detects and determines this. 4200.
Since the position setting unit 4100 has already been described in FIG.
The position detection slide device 4200 includes a slide means 4210 for sliding and moving on the rope 130,
Rope position detection means 4220 for detecting the position on the rope and normal / abnormality determination means 4230 for judging whether the hooking is normal or abnormal in response to the result. Furthermore, when notifying the operator, it is convenient to provide alarm means 4240 for notifying by voice or display, and communication means 4260 for transmitting the determination result together with the individual recognition code provided in the individual recognition code providing means 4250 to other management terminals. Good. Of course, it also has a power supply / control means 4300 for controlling these and supplying power.
Here, the on-rope position detection means 4220 detects the position on the rope where the position detection slide device 4200 stays by detecting the position setting means 4100, and outputs this value to the normal / abnormality determination means 4230. The normal / abnormal determination means 4230 determines whether the hooking height is normal or abnormal based on a predetermined relationship. The predetermined relationship is, for example, that the detected position on the rope is normal on the waist position side from the middle of the rope and abnormal on the hook side.

As a more specific example, an example of a position detection slide device 4200 corresponding to the position setting unit 4100 of 2-B in FIG. 2 is shown in 4-B.
The on-rope position detection unit 4220 includes a light emitting unit 4221, a color filter 4222, a light receiving unit 4223, and an amplifier 4224.
The light emitting means 4221 (for example, white LED) is irradiated with light toward the rope. Assuming that the position of the rope hit by the light is red, the reflected light is reflected and returned, so that the reflected light is divided by the color filter 4222 and received by the light receiving means 4223 (for example, a phototransistor). When amplified by amplifier 4224, the color intensity of the rope is detected.
As the normal / abnormal determination means 4230, there is a position (color intensity) determination means 4231. Here, based on a preset color-position relationship (color position table), the position is determined corresponding to red, and normal judge.

As a more specific example, an example of a position detection slide device 4200 corresponding to the position setting unit 4100 of 2-C in FIG. 2 is shown in 4-C.
The on-rope position detecting unit 4220 includes a light emitting unit 4221, a light receiving unit 4223, and an amplifier 4224. The light emitting unit 4221 and the light receiving unit 4223 are simultaneously scanned by the scanning unit 4225, and the emitted light is scanned on the rope, reflected, received by the light receiving unit 4223, and amplified by the amplifier 4224 to obtain a pulse waveform. The line width corresponds to the line width on the rope. As the normal / abnormality determination means 4230, there is a position (time width) determination means 4232, where the position is found using the position / time width table 4233 and it is determined whether or not it is normal.

FIG. 5 is a view showing another embodiment of the sliding hook hook height state detecting device of the present invention, in particular, an embodiment when used in a retractor type rope stretcher.
The retractor-type rope stretcher 510 is provided with means for winding a rope, allowing a slow pull-out, a slow self-rewinding means, and a brake means for fast movement. In such a case, since the pull-out length of the rope is different, the position of the detection tool for determining normality / abnormality on the rope is different. In such a case, a slide-type hook hook height state detection tool capable of specifying the determination reference position is provided.
For position detection, various position setting means as shown in FIG. 2 can be used. For example, in the case of using the 4-C position detection slide device 4200 of FIG. 4 using the 2-C position setting means 4100, the rope stretcher 510 is similar in position to the position detection slide device 4200. A detection means is provided. In this way, since the rope drawing position in the rope stretcher 510 can be known, the position of the position detection slide device 4200 can be determined on the basis of the position having a half length. Since the detected position on the rope may be sent to either by communication, either the position detection slide device 4200 or the rope stretcher 510 may determine normality / abnormality.
In 5-A, the rope stretcher 510 is attached to the belt 110 side, and in 5-B, the rope stretcher 510 is on the master rope side and the hook is attached to the belt side.
Usually, the hook is hooked on the master rope side, but when the rope stretcher 510 is used, if it becomes large, it is often used as in 5-B. In such a case, it is natural that the height of the hook hook is not high on the hook side but normal on the side of the rope stretcher 510 and normal on the hook side.

As described above, the slide-type hook hook height state detecting device and the safety belt provided with the same according to the present invention can detect the height of the hook hook even if the rope is bent. .

DESCRIPTION OF SYMBOLS 100 Safety belt 110,620 Belt 120,621 Connection part 130,630 Rope 140 Hook 150 Hooking height state detection tool 610 Parent rope 640 First sensor 4100 Position setting means 4200 Position detection slide device 4210 Slide means 4220 Rope position detection Means 4221 Light emitting means 4222 Color filter 4223 Light receiving means 4224 Amplifier 4225 Scanning means 4230 Normal / abnormality judging means 4231 Position (color intensity) judging means 4232 Position (time width) judging means 4233 Position / time width table 4240 Alarm means 4250 Individual recognition code Giving means 4260 Communication means 4300 Power supply / control means 510 Rope stretcher

Claims (7)

A safety belt having a belt for supporting the human body of the worker, a rope coupled to the belt via a connection portion, and a hook coupled to the other end of the rope and hooked on the support, or the worker A belt for supporting the human body, a hook coupled to the belt via a connecting portion, a rope coupled to the hook, and a support means for locking to a support provided at the other end of the rope. Providing for the rope in the safety zone,
Position setting means on the rope and indicating a position in the length direction of the rope;
A slide device having a hole through which the rope passes or a hook related to the rope, including a slide means that freely slides and moves on the rope and stops at the lowest point of the rope by its own weight;
And detecting a height state of the hook hanging on the support or a height state of the support means hanging on the support according to a longitudinal position of the slide device on the rope. A slide-type hook-hanging state detector characterized in that The position setting means is a part of the rope along the length direction with a magnetic material, or colored and colored in the length direction on the rope, or the length on the rope. 2. The sliding type according to claim 1, wherein at least one of a line having a width varying in a direction or a line having a distance varying in a length direction on the rope is provided. Hook height detector. The slide device electrically detects the position setting means and specifies the position on the rope where the position setting means stays, and outputs from the first rope position detection means. And a normal / abnormality determination means for determining whether the height state of the hook is normal or abnormal based on a predetermined relationship between the position and a hook height state of the hook or support means on the support. The sliding hook hook height state detection tool according to claim 1 or 2, further comprising: The position setting means is colored and color-coded in the length direction on the rope, and the first rope position detection means includes a light emitting means for irradiating light toward the rope, and the rope. 4. A sliding hook according to claim 3, further comprising: a light receiving means for receiving reflected light which is reflected and returned; and a color filter provided on an optical path of the reflected light to detect coloring on the rope. Hanger height detector. The position setting means is one that has been given a line whose width changes in the length direction on the rope, or one that has been given a line whose interval changes, and the first position detection means on the rope is A light emitting means for irradiating light toward the rope; a light receiving means for receiving reflected light reflected by the rope; and a scanning means for scanning the light emitting means and the light receiving means. 4. The irradiation light from the light emitting means traverses a line of the position setting means, the reflected light is received by the light receiving means, and the line width can be detected. The slide-type hook hook height state detector described. One end of the rope is provided with a rope stretcher capable of adjusting the length of the rope by pulling out or rewinding the rope, and the rope stretcher can electrically detect the position setting means. By providing the second on-rope position detecting means, the first on-rope position detecting means obtained based on the position value obtained from the value of the on-rope position detected by the second on-rope position detecting means. The sliding hook hook height state detector according to any one of claims 3 to 5, wherein a position value on the rope of the sliding device is compared. Position setting means on the rope for indicating the position in the length direction of the rope;
Slide hook hook height comprising a slide device having a hole through which the rope penetrates or a hook related to the rope, including a slide means that freely slides and moves on the rope and stops at the lowest point of the rope by its own weight A state detector,
A belt for supporting an operator's human body, the rope coupled to the belt through a connection portion, and a hook coupled to the other end of the rope and hooked on a support; A belt for supporting the human body, a hook coupled to the belt via a connecting portion, a rope coupled to the hook, and a support means for locking to a support provided at the other end of the rope. A safety belt characterized by having.

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