JP3974488B2 - Safety belt usage count detection device and safety belt usage status management method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a device for detecting the number of times of use of a safety belt used by an operator in high-place work such as a construction site, and a method for managing the usage status of the safety belt.
[0002]
[Prior art]
Generally, when working at a high place such as a construction site, an operator is required to wear a safety belt to prevent falling. This safety belt has a predetermined length of rope, and hooks attached to the tip of the rope are hung on the master rope etc. at the work site so that the operator is supported by the rope in the event of a fall. .
[0003]
The safety belt includes a winder that winds the rope. When the rope is pulled out from the winder, the length of the rope is held, and when the predetermined operation unit is operated, the rope winder Is known that is automatically wound (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-89592
[Problems to be solved by the invention]
However, at the construction site, when the worker moves the work place, it is necessary to remove the hook of the rope of the safety belt from the master rope and hang the hook again on the master rope at the work place of the movement destination, Since such hook changing work is often performed frequently, it is easy to neglect hooking, and the use of the hook is not yet thorough despite wearing a safety belt.
[0006]
The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to effectively encourage the worker to use a safety belt and to contribute to the reduction of the fall accident. An object of the present invention is to provide a device for detecting the number of times of use and a method of managing the use status of a safety belt.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in claim 1, the operation detecting means for detecting the operation of the winding operation portion of the rope winder provided in the safety belt, and the number of operations detected by the operation detecting means. And an operation frequency display unit for displaying the operation frequency stored in the operation frequency storage unit.
[0008]
Thus, when an operator wearing a safety belt works at a high place or the like, the operation of the operation unit of the rope winder provided in the safety belt is detected by the operation detection means, and the number of operations is stored in the operation number storage unit. Is done. Further, since the number of operations stored in the operation number storage unit is displayed on the operation number display unit, for example, by displaying the number of operations stored within a predetermined period, the usage status of the safety belt can be accurately determined for the operator. Can be recognized. In this case, since the operation of the winder performed at the time of changing the rope is detected, it is possible to grasp the appropriate number of use of the safety belt according to the frequency of changing the rope at each work site.
[0009]
According to a second aspect of the present invention, in the safety band usage number detection device according to the first aspect, an operation piece operable in the operation direction of the operation portion, and an operation detection switch as an operation detection means attached to the operation piece; The operation detection switch is configured to be activated by contact with the operation unit when the operation piece is pressed toward the operation unit .
[0010]
Thus, in addition to the operation of the first aspect, when the operation piece is pressed toward the operation portion, the operation detection switch of the operation piece comes into contact with the operation portion to operate the operation portion, and the operation detection switch is activated.
[0011]
According to a third aspect of the present invention, in the safety band use number detection device according to the first or second aspect, the operation number storage unit is provided on the safety band side, and the operation number display unit is configured separately from the safety band. The operation number storage unit and the operation number display unit are configured to be connectable via a predetermined communication means.
[0012]
Thus, in addition to the operation of the first or second aspect, the predetermined operation when using the safety belt is stored in the operation frequency storage unit provided on the safety belt side, and is configured separately from the operation frequency storage unit. Since the number of operations in the operation count storage unit is displayed by the display, even if the operation count display function is not provided for each safety belt, the number of operations for multiple safety belts can be displayed sequentially on a single display. Is possible.
[0013]
According to a fourth aspect of the present invention, in the safety band usage number detection device according to the third aspect, the operation number data stored in the operation number storage unit is read by the operation of a predetermined switch on the display, and the operation number display is performed. Reading display means for displaying on the screen is provided.
[0014]
Thus, in addition to the operation of the third aspect, the number of operations can be easily displayed by operating the switch of the display.
[0015]
According to a fifth aspect of the present invention, in the safety band usage number detecting device according to the third or fourth aspect, the operation number data stored in the operation number storage unit is initialized by operating a predetermined switch in the display unit. Data initialization means are provided.
[0016]
Thereby, in addition to the operation of the third or fourth aspect, the operation frequency data is easily initialized by operating the switch of the display.
[0017]
According to a sixth aspect of the present invention, in the safety band usage number detection device according to the first, second, third, fourth, or fifth aspect, the operation detection means and the operation frequency storage unit are attached to a predetermined unit that can be attached to the safety band side. Provided integrally.
[0018]
Thereby, in addition to the operation of the first, second, third, fourth or fifth aspect, the unit having the operation detecting means and the operation number storage unit provided integrally can be attached to the safety belt, and can be used for the ready-made safety belt. Is possible.
[0019]
Further, in claim 7, an operation detection means for detecting the operation of the winding operation part of the rope winder provided in the safety belt, an operation number storage part for storing the number of operations detected by the operation detection means, A safety belt usage state management method using a usage frequency detector provided with an operation frequency display unit that displays an operation frequency stored in an operation frequency storage unit, wherein a predetermined safety belt is worn by the same worker The number of operations in a period is stored in the operation number storage unit, and the operation number stored in the operation number storage unit is stored in the operation number display unit in order to evaluate the safety band usage status of the worker after the period has elapsed. The display method is used.
[0020]
Thereby, the number of operations in a predetermined period of the safety belt worn by the same worker is stored in the operation number storage unit, and the number of operations stored in the operation number storage unit is displayed as the number of operations after the work period has elapsed. For example, a worker who has not used the specified number of times is alerted, and an operator whose number of uses exceeds the specified number of times is praised. The usage status can be evaluated.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a safety belt, FIG. 2 is a perspective view of a use number detecting device, and FIG. 3 is a front view of a main part showing a counter unit. FIG. 4 is a circuit configuration diagram of the usage number detection device.
[0022]
A safety belt 1 shown in the figure is used in high-place work such as a construction site, and includes the use number detecting device of the present invention.
[0023]
The safety belt 1 includes a torso belt 2 attached to an operator, a rope 3 extending from the torso belt 2, a hook 4 attached to the tip of the rope 3, and a winder 5 for winding the rope 3. Has been.
[0024]
The rope 3 is formed in a flat band shape having a predetermined length (for example, 1.7 m), and is made of, for example, a high-strength aramid fiber.
[0025]
The hook 4 has a known structure that can be connected to the master rope at the work site, and is stored in a storage bag 2a provided on the torso belt 2 when removed from the master rope. That is, the hook 4 has a hook body 4a that is curved in a substantially U shape, and a movable portion 4b that opens and closes an open portion of the hook body 4a. The movable portion 4b is locked by a lock mechanism (not shown), and the movable portion 4b When the operation portion 4c is operated, the movable portion 4b is unlocked.
[0026]
The winder 5 has a well-known structure for winding the rope 3 around a reel (not shown) provided in the winder body 5a, and is attached to a predetermined position of the body belt 2. That is, the winder 5 is provided with a spring (not shown) for urging the reel in the winding direction. When the rope 3 is pulled out from the winder body 5a, the rope 3 is pulled out by a stopper mechanism (not shown). When the operation portion 5b provided on the lower surface of the winder body 5a is pressed, the stopper mechanism is released, the reel is rotated in the winding direction by a spring, and the rope 3 is moved into the winder body 5a. It is designed to be wound up.
[0027]
Next, the use number detection device of the present invention will be described. In other words, the use number detection device shown in the present embodiment includes a counter unit 10 attached to the winder 4 and a reading display 20 that can be electrically connected to the counter unit 10.
[0028]
The counter unit 10 includes a unit main body 11 that is attached to the lower surface of the winder main body 5a, and an operation piece 11a that extends laterally from one end of the unit main body 11. As shown in FIG. It is fixed to the lower surface of the winder body 5a by adhesive tape or screwing. In this case, as shown in FIG. 3B, the distal end side of the operation piece 11a is positioned below the operation portion 5b of the winder 5, and the operation piece 11a can contact the operation portion 5b. An operation detection switch 12 as a proper operation detection means is attached. The operation piece 11a is made of an elastically deformable plate-like member. When the operation piece 11a is pressed upward, the operation detection switch 12 of the operation piece 11a comes into contact with the operation portion 5b. Thereby, the operation part 5b is pressed and the operation detection switch 12 is turned on. Further, a jack 11b for connecting the reading display 20 is provided on the front surface of the unit main body 11.
[0029]
The unit body 11 includes a first control unit 13 as an operation count storage unit that stores the number of operations of the operation unit 5 b detected by the operation detection switch 12, and the operation count stored in the first control unit 13. The first control unit 13 is operated by a power source 13a such as a battery and the stored data is held by the power source 13a. That is, the operation detection switch 12 is connected to the first control unit 13, and the number of times the operation detection switch 12 is turned on is stored in the first control unit 13. Further, the jack 11b includes a total of three contacts connected to the first control unit 13, the reset circuit 14, and the ground 15.
[0030]
The reading display 20 includes a display main body 21 formed separately from the counter unit 10, a second control unit 22 that reads operation frequency data stored in the first control unit 13 of the counter unit 10, and The second control unit 22 includes a display unit 23 for displaying the read operation frequency data, and the second control unit 22 is operated by a power source 22a such as a battery.
[0031]
The display body 21 has a cable 21 a as a communication means connected to the counter unit 10, and a plug 21 b attached to the tip of the cable 21 a is inserted into the jack 11 b of the counter unit 10, whereby the second controller 22. Are connected to the first control unit 13 and the reset circuit 14 of the counter unit 10, and the ground 24 of the display body 21 is connected to the ground 15 of the counter unit 10.
[0032]
The display unit 23 includes a known digital display and is connected to the second control unit 22 via a display unit drive circuit 23a. The display unit 23 is disposed on the upper part of the display body 21.
[0033]
A reading switch 25 and a reset switch 26 are provided below the display unit 23 of the display body 21. These switches 25 and 26 are push button switches, and are connected to the second control unit 22. That is, the reading switch 25 and the second control unit 22 constitute reading display means, and the reset switch 26 and the second control unit 22 constitute data initialization means.
[0034]
Further, a voltage monitor 27 is connected to the second control unit 22 and the power source 22a, and the voltage monitor 27 detects the voltage of the power source 22a when the reading switch 25 is turned on.
[0035]
In the usage number detection device configured as described above, when the operation piece 11a of the counter unit 10 is pressed upward when the winder 5 of the safety belt 1 is operated, the operation detection switch 12 attached to the operation piece 11a. Is turned on and the number of times the operation detection switch 12 is turned on is stored in the first controller 13 as the number of operations. That is, the initial value of the first control unit 13 is “0”, and is incremented by “1” every time the operation detection switch 12 is turned on.
[0036]
Next, by inserting the plug 21b of the reading display 20 into the jack 11b of the counter unit 10, the reading display 20 is connected to the counter unit 10 via the cable 21a, and the reading switch 25 of the reading display 20 is pressed ( When the operation is turned on, the operation frequency data stored in the first control unit 13 of the counter unit 10 is read by the second control unit 22 and displayed on the display unit 23. At this time, when the reading switch 25 is turned on, the voltage monitor 27 detects the voltage of the power source 22a. If the detected voltage is lower than a predetermined voltage due to battery consumption or the like, for example, the display unit 23 A predetermined alarm display is performed such as blinking the display.
[0037]
Next, when the reset switch 26 of the reading display 20 is pressed (ON operation), a reset signal is output from the second control unit 22 to the first control unit 13 of the counter unit 10, and the first control unit 13 receives the reset signal. The stored operation count data is reset to the initial value “0”.
[0038]
As described above, according to the safety band use number detection device of the present embodiment, the operation of the rope winder 5 provided in the safety band 1 is detected, the operation number is stored, and the operation number is arbitrarily set. Since it is displayed, for example, by displaying the number of operations stored within a predetermined period, it is possible to allow the operator to accurately recognize the usage status of the safety belt 1. As a result, it is possible to effectively promote the use of the safety belt 1 to an operator at an aerial work site or the like, and it is possible to contribute to the reduction of the fall accident.
[0039]
In this case, since the operation of the winder 5 that is performed when the rope 3 is replaced is detected as a predetermined operation when the safety belt 1 is used, the safety according to the frequency of changing the rope 3 at each work site. The proper number of times of use of the belt 1 can be grasped, and the use state of the worker's safety belt can be accurately evaluated.
[0040]
Further, the number of operations of the winder 5 is stored by the counter unit 10 attached to the safety belt 1, and the number of operations stored in the counter unit 10 is displayed by the reading display 20 configured separately from the counter unit 10. Since it did in this way, even if it does not have the display function of the operation frequency for every safety belt | band | zone 1, the frequency | count of operation of the some safety belt | band | zone 1 can be sequentially displayed by the one reading display device 20. FIG. Therefore, when used for a plurality of safety belts 1, the cost of the entire apparatus can be reduced, which is extremely advantageous when used in a large-scale construction site where many workers work.
[0041]
Further, by operating the reading switch 25 provided on the reading display 20, the operation number data stored in the counter unit 10 is read and displayed, and the reset switch 26 provided on the reading display 20 is operated. Thus, the data stored in the counter unit 10 is reset, so that the number of operations can be displayed and the data can be reset by an extremely simple operation. Confirmation work can be performed efficiently.
[0042]
In addition, since the counter unit 10 in which the operation detection switch 12 and the first control unit 13 are integrally provided is fixed to the winder 5 with an adhesive tape or the like, a ready-made safety unit can be obtained by attaching the counter unit 10 separately. It can also be used for a belt, and versatility can be improved.
[0043]
Next, with reference to the flowchart shown in FIG. 5, a safety band usage status management method using the usage count detection device will be described.
[0044]
First, at an arbitrary construction site or the like, an operator wears the safety belt 1 to which the counter unit 10 is attached (S1), and starts work on the site (S1). At this time, when the worker uses the safety belt 1 (S3), the number of uses stored in the counter unit 10 is added once (S4). In this case, the operator pulls out the rope 3 of the safety belt 1 from the winder 5 and connects the hook 4 to the master rope at the work site. When moving the work place, the hook 4 is removed from the master rope and the rope 3 is removed. The number of times of use of the safety belt 1 is counted as being wound on the winder 5. That is, when the operation detection switch 12 of the counter unit 10 is turned on along with the operation of the winder 5, the number of operations is stored in the counter unit 10 as the number of times of use of the safety belt 1. Therefore, even if the safety belt 1 is worn, the number of times of use is not counted unless use by the operation of the winder 5 is detected.
[0045]
Next, when a predetermined work period (for example, one day work time) has passed (S5), an administrator such as a field supervisor connects the reading display 20 to the counter unit 10 in the safety zone 1 of the worker. Then, the number of operations stored in the counter unit 10 is displayed on the reading display 20 (S6). As a result, the number of times the safety band of the worker is used is confirmed by the administrator. For example, the worker whose number of uses has not reached the predetermined reference number is alerted, and the number of uses exceeds the reference number. Workers who are present will praise the worker, etc., and evaluate the worker's use of safety belts. After the confirmation operation of the safety belt use state is completed, the number of uses stored in the counter unit 10 is reset (S8), and initialization for the next use is performed.
[0046]
Thus, according to the safety belt usage status management method of the present embodiment, the number of operations in the predetermined work period of the safety belt 1 worn by the same worker is counted using the usage number detection device of the embodiment. Since the number of operations stored in the unit 10 and the number of operations stored in the counter unit 10 are displayed for evaluation of the worker's use of the safety belt after the work period has elapsed, it is safe for the worker. The use of the belt can be effectively promoted, and it can contribute to the reduction of fall accidents.
[0047]
In the reading display 20 of the above embodiment, the operation frequency data stored in the counter unit 10 is read and displayed on the display unit 23, and the data of the counter unit 10 is reset. In addition to the function, a function for storing the data read from the counter unit 10 so that the data can be displayed again, a function for outputting the data stored in the reading display 20 to an arbitrary external device such as a personal computer, etc. Also good.
[0048]
Furthermore, in the above-described embodiment, the reading display 20 is configured separately from the counter unit 10, but a usage number detection device integrally configured with these functions is provided on the safety belt 1 side. You may do it. In this case, the number-of-uses detection device may be separately attached to the safety belt 1 or may be provided integrally with the winder of the rope 3.
[0049]
【The invention's effect】
As described above, according to the device for detecting the number of times of use of the safety belt according to claim 1, for example, by displaying the number of operations within a predetermined period of the worker wearing the safety belt, Therefore, it is possible to effectively promote the use of a safety belt to workers at high-altitude work sites, etc., and contribute to the reduction of fall accidents. In this case, by detecting the operation of the winder performed at the time of changing the rope, it is possible to grasp the appropriate number of times the safety belt is used according to the frequency of changing the rope at each work site. It is possible to accurately evaluate the safety belt usage status.
[0050]
According to the safety band usage number detection device of claim 2, in addition to the effect of claim 1, when the operation piece is pressed toward the operation portion, the operation portion is operated and the operation detection switch is activated. Even if a safety belt is worn, there is an advantage that the number of times of use is not counted unless the use of the winder is detected.
[0051]
According to the device for detecting the number of times of use of the safety belt according to claim 3, in addition to the effect of claim 1 or 2, even if the operation frequency display function is not provided for each safety belt, Since it can be displayed sequentially by a single display unit, the cost of the entire device can be reduced when used for multiple safety belts, and it can be used at large construction sites where many workers work. Is very advantageous.
[0052]
Further, according to the safety band usage number detection device of claim 4, in addition to the effect of claim 3, the number of operations can be displayed by a simple operation, so the safety belt can be used even in various construction sites. It is possible to efficiently check the situation.
[0053]
Further, according to the safety band usage number detection device of claim 5, in addition to the effect of claim 3 or 4, the operation frequency data can be initialized by a simple operation. The safety belt usage status can be checked efficiently.
[0054]
Further, according to the safety band usage number detection device of claim 6, in addition to the effects of claims 1, 2, 3, 4 and 5, it can be used for a ready-made safety belt. Can be planned.
[0055]
Further, according to the safety band usage status management method of claim 7, for example, a worker who has not used the predetermined number of times of use is alerted, and an operator whose number of uses exceeds the standard number of times Adequate evaluation of workers' use of safety belts, such as praise, can effectively encourage workers at high-altitude work sites to use safety belts and contribute to a reduction in fall accidents can do.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a safety belt showing an embodiment of the present invention. FIG. 2 is a perspective view of a usage count detector. FIG. 3 is a front view of a main part showing a counter unit. Circuit configuration diagram [FIG. 5] A flowchart showing a safety belt usage status management method using the usage number detection device of the present invention [Explanation of symbols]
1 ... safety belt, 3 ... rope, 5 ... winder 10 ... counter unit, 11a ... operating piece, 12 ... operation detecting switch, 13 ... first control unit, 20 ... reading display device, 21a ... cable, 22 ... second control unit, 23 ... display unit, 25 ... reading switch, 26 ... reset switch.

Claims (7)

An operation detecting means for detecting the operation of the winding operation part of the rope winder provided in the safety belt ;
An operation count storage unit for storing the number of operations detected by the operation detection means;
An apparatus for detecting the number of times of use of a safety belt, comprising: an operation frequency display unit for displaying the operation frequency stored in the operation frequency storage unit. An operation piece operable in an operation direction of the operation unit;
An operation detection switch as an operation detection means attached to the operation piece,
2. The safety band usage number detection device according to claim 1 , wherein the operation detection switch is activated by contact with the operation portion when the operation piece is pressed toward the operation portion . The operation number storage unit is provided on the safety belt side, and the operation number display unit is provided on an external display configured separately from the safety belt,
The safety band usage count detection device according to claim 1 or 2, wherein the operation count storage section and the operation count display section are configured to be connectable via a predetermined communication means. 4. The safety according to claim 3, wherein the display is provided with a reading display means for reading the operation frequency data stored in the operation frequency storage unit by operating a predetermined switch and displaying it on the operation frequency display unit. Band usage count detection device. The use of a safety belt according to claim 3 or 4, wherein the display is provided with data initialization means for initializing operation frequency data stored in an operation frequency storage section by operating a predetermined switch. Number detection device. 6. The safety band usage number detection device according to claim 1, wherein the operation detection means and the operation frequency storage unit are integrally provided in a predetermined unit that can be attached to the safety band side. . Stored in the operation detection means for detecting the operation of the winding operation part of the rope winder provided in the safety belt, the operation number storage part for storing the number of operations detected by the operation detection means, and the operation number storage part. A safety belt usage status management method using a usage count detection device comprising an operation count display section for displaying the number of operations performed,
Store the number of operations in a predetermined period of the safety belt worn by the same worker in the operation number storage unit,
After the period has elapsed, the number of operations stored in the number-of-operations storage unit is displayed on the number-of-operations display unit in order to evaluate the operator's safety band usage status. .

Images