Fall protection apparatus

Abstract

The fall prevention device for high-altitude work according to the present invention comprises: a base; a frame fixed to stand upright on the base and extended in the longitudinal direction; at least one crossbar fixed to the upper side of the frame and extended in the transverse direction relative to the longitudinal direction; a safety rope installed on the crossbar and capable of being fastened to a worker's harness; a work range adjustment unit capable of adjusting the range of a worker's work area allowed by the length of the safety rope; an information acquisition unit for acquiring work environment information within the work area; and a control unit for determining a danger zone within the work area based on the work environment information acquired by the information acquisition unit, and controlling the work range adjustment unit to restrict the worker's movement into the danger zone by adjusting the range of the work area.

Description

Technology Field

[0001] The present invention relates to a fall prevention device that prevents a worker from falling during high-altitude work. Background Technology

[0002] There are instances where workers perform tasks at heights, such as covering outdoor stockpiles, high-rise loading or unloading, or working on high-rise structures at construction and civil engineering sites. In such cases, if workers operate without safety equipment, there is a risk of safety accidents, such as falls. Therefore, a fall prevention device is necessary to prevent safety accidents during work at heights.

[0003] Meanwhile, even when performing work at height with such fall prevention devices in place, there is a possibility that the worker may be exposed to unexpected dangerous situations during the work; therefore, it is necessary to provide auxiliary risk prevention measures to prepare for this. The problem to be solved

[0004] The present invention aims to provide a fall prevention device as a solution to the aforementioned problems, which can prevent safety accidents such as falls while performing work at heights and can provide a sense of psychological stability to the worker through auxiliary risk prevention means. means of solving the problem

[0005] A fall prevention device for high-altitude work according to one embodiment of the present invention comprises: a base; a frame fixed to stand upright on the base and extended in the longitudinal direction; at least one crossbar fixed to the upper side of the frame and extended in the transverse direction relative to the longitudinal direction; a safety rope installed on the crossbar and capable of being fastened to a worker's harness; a work range adjustment unit capable of adjusting the range of a worker's work area allowed by the length of the safety rope; an information acquisition unit for acquiring work environment information within the work area; and a control unit for determining a danger zone within the work area based on the work environment information acquired by the information acquisition unit, and controlling the work range adjustment unit to restrict the worker's movement to the danger zone by adjusting the range of the work area. Accordingly, safety accidents such as falls can be prevented while performing high-altitude work, and a sense of psychological stability can be provided to the worker by restricting movement to the danger zone.

[0006] The safety rope is variable in length, and the work range adjustment unit can adjust the range of the work area by varying the length of the safety rope. Accordingly, the range of the work area can be easily adjusted by a simple method of varying the length of the safety rope.

[0007] The horizontal bar further includes a rope moving rail installed along the horizontal direction that allows the movement of a safety rope, and the work range adjustment unit can adjust the range of the work area by restricting the movement of the safety rope on the rope moving rail. Accordingly, in addition to varying the length of the safety rope, the range of the work area can be more effectively adjusted to suit hazardous situations by restricting the movement of the safety rope.

[0008] The control unit may further include a notification unit that provides notifications to a worker, and the control unit may control the notification unit to provide a warning notification to the worker in response to the worker's movement into a hazardous area. By doing so, safety can be improved by notifying the worker of hazardous situations through the notification unit.

[0009] The notification unit includes a notification transmission rope that can be attached to a worker's harness in parallel with a safety rope, and a rope pulling unit capable of temporarily pulling the notification transmission rope. The control unit can control the notification unit to provide a warning notification to the worker through the tension generated by pulling the notification transmission rope. By doing so, safety can be further enhanced by effectively notifying the worker of a dangerous situation using the physical force of the rope pulling. Effects of the invention

[0010] According to one embodiment of the present invention as described above, safety accidents such as falls can be prevented while performing work at height, and there is an effect of providing psychological stability to the worker.

[0011] In addition, according to one embodiment of the present invention, the convenience of work is improved by allowing a worker to safely and easily access a high-altitude location where work is required, and by easily moving the fall prevention device to a location where high-altitude work is required. Brief explanation of the drawing

[0012] FIG. 1 is a perspective view illustrating an example of a fall prevention device installed according to one embodiment of the present invention. FIG. 2 is a front view schematically illustrating a fall prevention device according to one embodiment of the present invention. FIG. 3 is a drawing for explaining the range of the working area in a fall prevention device according to one embodiment of the present invention. FIG. 4 is a block diagram illustrating a configuration for adjusting the range of the working area of ​​a fall prevention device according to one embodiment of the present invention. FIG. 5 is a flowchart illustrating the control operation of a fall prevention device according to one embodiment of the present invention. Specific details for implementing the invention

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention.

[0014] FIG. 1 is a perspective view illustrating an example of a fall prevention device installed according to one embodiment of the present invention, and FIG. 2 is a front view schematically illustrating a fall prevention device according to one embodiment.

[0015] According to one embodiment, the fall prevention device (1) can be implemented as a device to prevent safety accidents, such as a worker (3) falling, when performing high-altitude work, for example, covering an outdoor stockpile (30). FIG. 1 illustrates a case where a worker (3) climbs onto a stockpile (30) to perform covering work as an example of high-altitude work, and the fall prevention device (1) of the present invention can be installed not only for covering work but also at various high-altitude work sites.

[0016] Referring to FIGS. 1 and FIGS. 2, the fall prevention device (1) includes a base (100) and a frame (110).

[0017] The base (100) supports and maintains the fall prevention device (1), and can generally have a shape such as a cuboid or a cylinder.

[0018] According to one embodiment, a means of movement, such as a wheel, is provided on the base (100) to enable the fall prevention device (1) to move. Here, the means of movement may be implemented in a form capable of manual driving or power driving, and in the case of a means of movement capable of power driving, it may further include a motor (engine) for movement.

[0019] In the present invention, since the fall prevention device (1) is provided in a movable form, the fall prevention device (1) can be moved easily and quickly to a location where high-altitude work is required, that is, a location where covering work is required, by moving between a number of stockpiled items piled up outdoors, for example, and moving to a location where high-altitude work is required. This can improve the efficiency of the work.

[0020] The frame (110) is installed so as to stand upright on the base (100). In one embodiment, the frame (110) is extended in the longitudinal direction and, for example, takes the form of a vertical column standing upright, and can be implemented in a form that allows for height adjustment.

[0021] According to one embodiment, a lifting member (e.g., a ladder structure) may be installed in the frame (110) to enable a worker (3) to move to a high position for work. The lifting member may be provided in a detachable form on the frame (110). The worker (3) can use the lifting member to safely and easily access the high position where work is required.

[0022] The fall prevention device (1) includes at least one crossbar (120).

[0023] The horizontal bar (120) is fixed to the upper side of the frame (110) and installed to extend horizontally relative to the longitudinal direction of the frame (110).

[0024] Referring to FIGS. 1 and 2, a fall prevention device (1) according to one embodiment is implemented in a form including two horizontal bars (120) that are extended on both sides with a frame (110) in between.

[0025] In the present invention, the fall prevention device (1) is implemented in a form including two horizontal bars (120), thereby enabling two operations to be performed simultaneously, for example, covering two stockpiles (30).

[0026] The crossbar (120) is stably fixed to the frame (110) by a fixing member (121), such as a wire.

[0027] In one embodiment, a single horizontal bar (120) can be fixed to a frame (110) using a plurality of, for example, two fixing members (121). Referring to FIG. 2, one end of each of the two fixing members (121) is connected to the top of the frame, and the other end is connected to the center and end of the horizontal bar (120), respectively, thereby stably fixing and supporting the horizontal bar (120) that extends in the horizontal direction.

[0028] The crossbar (120) includes at least one rope moving rail (122).

[0029] According to one embodiment, the rope moving rail (122) is installed along the horizontal direction in which the horizontal bar (120) extends. For example, the rope moving rail (122) may be installed parallel to the bottom of the horizontal bar (120). In one embodiment, if the fall prevention device (1) includes two horizontal bars (120), two rope moving rails (122) are installed correspondingly.

[0030] The fall prevention device (1) includes a safety rope unit (200) installed on a crossbar (120).

[0031] The safety rope unit (200) includes a safety rope (210) that can be attached to a harness (safety belt) (31) worn by a worker (3). One end of the safety rope (210) is connected to a rope moving rail (122) so that it can move along a crossbar (120), and the other end is attached to the worker's (3) harness (31). A loop (211) for attaching to the harness (31) may be provided at the other end of the safety rope (210).

[0032] In one embodiment, the safety rope (210) is connected to the rope moving rail (122) via the safety rope lead device (221) described below. Here, the length of the safety rope (210) can be varied by the safety rope lead device (221).

[0033] The safety rope unit (200) includes a work range adjustment unit (220) that can adjust the range of the worker's (3) work area allowed by the length of the safety rope (210) below the crossbar (120).

[0034] The work range adjustment unit (220) includes a safety rope lead device (221) installed on the rope moving rail (122).

[0035] The safety rope lead device (221) has a reeling function that winds and receives the safety rope (210), pulls out the safety rope (210) when the worker (3) moves away, and rewinds the safety rope (210) when the worker (3) moves closer. The safety rope lead device (221) is provided with, for example, a gear that rotates along a rotating shaft connected to the safety rope (210), so that when the safety rope (210) is suddenly pulled at a high speed, the gear engages and locks, thereby preventing the safety rope (210) from being temporarily pulled out, thus preventing the worker (3) from falling.

[0036] According to one embodiment, the safety rope lead device (221) can adjust the range of the work area (310) by varying the length of the safety rope (210).

[0037] FIG. 3 is a drawing for explaining the range of the working area in a fall prevention device according to one embodiment of the present invention, and FIG. 4 is a block diagram illustrating a configuration for adjusting the range of the working area of ​​a fall prevention device according to one embodiment.

[0038] Referring to FIGS. 1 and FIGS. 3, when a worker (3) performs, for example, covering work on an outdoor stockpile (30), a work area (310) is set on the upper surface (300) of the stockpile (30), which is the target area where the work is performed. Here, the range of the work area (310) is the range that the worker (3) can reach when the safety rope (210) is fully withdrawn from the safety rope lead device (221), that is, at the maximum withdrawal length, and can be determined by considering the type of work at height, the work environment, the skill level of the worker (3), etc.

[0039] In one embodiment, the work area (310) includes a safety zone (311) and a danger zone (312). For example, referring to FIG. 3, the edge portion within the work area (310) may be the danger zone (312). That is, the danger zone (312) is defined as an area where the risk of the worker (3) falling is low, but safety is relatively weak or can cause psychological anxiety to the worker (3) while working.

[0040] The safety rope lead device (221) as the work range adjustment unit (220) can adjust the range of the work area (310) by controlling the length of the safety rope (210), that is, the maximum withdrawal length of the safety rope (210) that is allowed to be withdrawn from the safety rope lead device (221). In other words, the range of the work area of ​​the worker (3) can be adjusted in correspondence with the maximum withdrawal length of the safety rope (210). For example, referring to FIGS. 1 and FIGS. 3 (a), if the maximum withdrawal length of the safety rope (210) is controlled to increase, the range of the work area (310) can be expanded to the danger zone (312), and conversely, if the maximum withdrawal length of the safety rope (210) is controlled to decrease, the range of the work area (310) can be reduced to within the safety zone (311).

[0041] In this invention, the range of the work area (310) can be easily adjusted by a simple method in which the fall prevention device (1) varies the length of the safety rope (210).

[0042] According to one embodiment, the safety rope lead device (221) may be provided with an electric motor or a mechanical or electric locking device (brake device) that controls the safety rope (210) so that it is allowed to be pulled out only within a predetermined maximum pulling length range. Here, the maximum pulling length of the safety rope (210) is controlled by a control unit (400) described later, and the range of the working area (310) can be adjusted accordingly.

[0043] The work range adjustment unit (220) includes a rail stopper (222) installed on the rope moving rail (122).

[0044] The rail stopper (222) limits the movement of the safety rope (210) on the rope moving rail (122) to control the range of the work area (310).

[0045] Referring to FIG. 2, in one embodiment, a rail stopper (222) is installed on the outer side of the safety rope lead device (221) of the rope moving rail (122) to limit the movement range of the inner safety rope lead device (221), in which the safety rope (210) is received, to the rail stopper (222). By blocking the safety rope lead device (221) from moving outward in this manner, the rail stopper (222) can limit the movement of the safety rope (210).

[0046] According to one embodiment, the rail stopper (222) is installed on the inner side of the safety rope lead device (221) to block the safety rope lead device (221) from moving inward. Additionally, depending on the case, the rail stopper (222) may be installed on both the inner and outer sides of the safety rope lead device (221) to restrict the range of movement of the safety rope lead device (221) from both sides.

[0047] The rail stopper (222) can slide along the rope moving rail (122) manually or electrically. To this end, the rail stopper (222) may be provided with a roller that can be driven by, for example, an electric motor.

[0048] According to one embodiment, the installation position of the rail stopper (222) is varied by sliding as described above. Here, the installation position of the rail stopper (222) is controlled by a control unit (400) described later, and thus the range of the work area (310) can be adjusted. For example, referring to FIG. 3 (b), when two rail stoppers (222) are installed on both the inner and outer sides of the safety rope lead device (221) to limit the movement range of the safety rope lead device (221), the two rail stoppers (222) can be moved to the outer side (the right side shown), thereby moving the entire work area (310) from the inner side to the outer side, and thus the range of the work area (310) can be adjusted.

[0049] In this invention, the fall prevention device (1) can more effectively adjust the range of the work area (310) according to the dangerous situation by restricting the movement of the safety rope (210) in addition to varying the length of the safety rope (210).

[0050] Referring to FIG. 4, the fall prevention device (1) further includes a control unit (400), an information acquisition unit (410), a notification unit (420), and an input unit (430).

[0051] The control unit (400) generally controls various functions / operations performed in the fall prevention device (1). The control unit (400) includes at least one processor such as a CPU (Central Processing Unit), an AP (Application Processor), or a microprocessor, and the processor may be implemented to perform various functions / operations performed in the fall prevention device (1) by, for example, loading and executing a program corresponding to a predetermined algorithm stored in ROM (ROM), which is non-volatile memory, into RAM (RAM), which is volatile memory.

[0052] In one embodiment, the fall prevention device (1) is equipped with a control circuit having such a control unit (400). The control circuit may be, for example, mounted and housed within a base (100) or provided within a control box installed at one location of the frame (110). The control circuit may further be provided with a power supply unit that supplies power to components such as an information acquisition unit (410) and a notification unit (420), and a storage unit that stores various data for the control operation of the control unit (400).

[0053] The information acquisition unit (410) acquires work environment information within the work area (310).

[0054] The information acquisition unit (410) includes a camera installed in the fall prevention device (1), at least one sensor capable of detecting working environment such as temperature, humidity, or fine dust, and a microphone for receiving voice signals. At least one of the sensor (e.g., temperature sensor) and the microphone may be provided in a form that can be worn by the worker (3).

[0055] According to one embodiment, the information acquisition unit (410) can acquire work environment information within the work area (310). Specifically, the work environment information may be information acquired by photographing the work area (310) through a camera. Additionally, the information acquisition unit (410) may acquire work environment information, for example, through a camera, such as abnormal movements such as the worker (3) approaching a danger zone (312) or falling down, and may acquire work environment information such as accident occurrence or physical abnormalities of the worker (3) through a microphone or temperature sensor worn by the worker (3).

[0056] The notification unit (420) provides a notification (warning notification) to the worker (3).

[0057] The notification unit (420) includes a notification transmission rope that can be attached to the worker's (3) harness (31) in parallel with the safety rope (210), and a rope pulling unit capable of temporarily pulling the notification transmission rope. The notification transmission rope may be received in a separate auxiliary rope lead device installed on the safety rope lead device (221) or the rope moving rail (122), and the rope pulling unit is provided in the lead device in which the notification transmission rope is received.

[0058] In one embodiment, the rope pulling unit may temporarily pull the notification transmission rope at intervals of a predetermined time (e.g., 0.5 seconds, 1 second, 2 seconds, etc.) according to the control of the control unit (400). Here, the temporary pulling includes repeatedly pulling the notification transmission rope weakly for a predetermined length (e.g., 5 cm, 7 cm, etc.) to a degree that can be perceived by the worker (3).

[0059] In one embodiment, the control unit (400) can control the rope pulling unit to adjust the alert intensity according to the level of danger, for example, the degree of approach of the worker (3) to the danger zone (312). The alert intensity is adjusted, for example, by the strength, number, frequency, etc. of the temporary pulling of the alert rope.

[0060] Meanwhile, according to one embodiment, the safety rope (210) may perform the role of the notification unit (420) without additionally providing a notification transmission rope in the fall prevention device (1). That is, a warning notification may be provided to the worker (3) by temporarily pulling the safety rope (210) by a predetermined length at predetermined time intervals using a rope pulling unit provided in the safety rope lead device (221).

[0061] In one embodiment, the notification unit (420) further includes a voice output unit that outputs a warning notification as sound, a display notification unit such as an LED, etc. At least one of the voice output unit and the display notification unit may be provided in a form that can be worn by the worker (3).

[0062] In the present invention, the fall prevention device (1) can improve safety by notifying the worker (3) of a dangerous situation through the notification unit (420). In particular, safety can be further improved by effectively notifying the worker (3) of a dangerous situation using the physical force of rope pulling.

[0063] The input unit (430) receives input from the worker (3). The input unit (430) includes, for example, at least one button provided in the harness (31) worn by the worker (3) and operable by the worker (3). The input unit (430) may further include a microphone for receiving voice input from the worker (3).

[0064] In one embodiment, the operator (3) can use the input unit (430) to input to adjust or not adjust the range of the work area (310), and can also input to stop the warning notification.

[0065] According to one embodiment, the control unit (400) performs a control operation to adjust the range of the work area (310) and provide a warning notification to the worker (3) based on work environment information obtained through the information acquisition unit (410).

[0066] FIG. 5 is a flowchart illustrating the control operation of a fall prevention device according to one embodiment of the present invention.

[0067] Referring to FIG. 5, in a fall prevention device (1) for high-altitude work according to one embodiment, in operation 510, the control unit (400) obtains work environment information within the work area (310) through the information acquisition unit (410). Here, the work environment information includes information obtained by photographing the work area (310) through a camera.

[0068] In operation 520, the control unit (400) determines a dangerous area (312) within the work area (310) based on acquired work environment information. Here, the dangerous area (312) is an area where safety is relatively weak or where psychological anxiety may be caused to the worker (3) who is working, and is exemplified by being a part corresponding to the edge of the work area (310).

[0069] According to one embodiment, in operation 520, the control unit (400) determines a danger zone (312) within the work area (310) and can identify that a worker (3) is approaching the danger zone (312) based on work environment information obtained in operation 510.

[0070] In operation 530, the control unit (400) controls the work range control unit (220) to adjust the range of the work area (310).

[0071] In one embodiment, the control unit (400) adjusts the range of the work area (310) so that the movement of the worker (3) to the danger zone (312) determined in operation 520 is restricted.

[0072] Here, the work range adjustment unit (220) adjusts the range of the work area (310) by varying the length of the safety rope (210). Specifically, the range of the work area (310) can be adjusted (e.g., expanded or reduced) by controlling the maximum withdrawal length of the safety rope (210) that is allowed to be withdrawn from the safety rope lead device (221) provided as the work range adjustment unit (220).

[0073] Additionally, the work range adjustment unit (220) can adjust the range of the work area (310) by restricting the movement of the safety rope (210) on the rope moving rail (122). Specifically, the installation position of the rail stopper (222) provided as the work range adjustment unit (220) is varied, and the movement of the safety rope lead device (221) is blocked in response, thereby allowing the range of the work area (310) to be adjusted (e.g., moved inward or outward).

[0074] In one embodiment, the control unit (400) controls both the safety rope lead device (221) and the rail stopper (222) as a work range control unit (220) to control the range of the work area (310).

[0075] In operation 540, the control unit (400) controls the notification unit (420) to provide a warning notification to the worker (3) in response to the worker (3) moving to the danger zone (312). Here, the control unit (400) can provide a warning notification to the worker (3) by temporarily pulling a safety rope (210) or a notification transmission rope that can be attached to the worker (3)'s harness (31) in parallel with the safety rope (210), thereby creating tension through this pulling.

[0076] According to these embodiments of the present invention, the fall prevention device (1) can prevent safety accidents such as falling while performing high-altitude work, restrict movement to the danger zone (312) by adjusting the range of the work area (310), and provide psychological stability to the worker by providing appropriate warning notifications as needed.

[0077] Meanwhile, regarding the adjustment of the work area (310) range or warning notification as described above, input from the worker (3) may be received. For example, when the danger zone (312) is determined in operation 530 and it is identified that the worker (3) is approaching the danger zone (312), the range of the work area (310) is adjusted in operation 530, and a warning notification is provided in operation 540, the worker (3) may express an intention to continue working in the danger zone (312) by operating the input unit (430) provided in the harness (31). That is, if the worker (3) is a professional sufficiently skilled to safely perform work even in the danger zone (312), or if the type of work is a very important task where work in the danger zone (312) is unavoidable, the intention to continue the work can be expressed by operating the input unit (430) based on the judgment of the worker (3).

[0078] The control unit (400) can control the range adjustment of the work area (310) or stop the generation of warning notifications in response to the input of the worker (3). Accordingly, the worker (3) can continue to perform necessary tasks without problems, and since the worker is aware of dangerous situations in advance through warning notifications, etc., the worker can be encouraged to perform tasks safely with greater caution.

[0079] Although the present invention has been described in detail through preferred embodiments, the invention is not limited thereto and can be implemented in various ways within the scope of the claims. Explanation of the symbols

[0080] 1: Fall prevention device 100: Bass 110: Frame 200: Safety rope unit 210: Safety rope 220: Working range adjustment unit 221: Safety rope lead device 400: Control unit 410: Information Acquisition Department 420: Notification Department 430: Input section

Claims

Claim 1 A fall prevention device for high-altitude work comprises: a base; a frame fixed to stand upright on the base and extending in the longitudinal direction; at least one crossbar fixed to the upper side of the frame and extending in the transverse direction relative to the longitudinal direction; a safety rope installed on the crossbar and capable of being fastened to a worker's harness; a work range adjustment unit that can adjust the range of a work area including a safety zone and a danger zone, which is allowed by the length of the safety rope; and an information acquisition unit that acquires work environment information within the work area.The system includes a control unit that determines the danger zone within the work area based on the work environment information obtained by the information acquisition unit, and controls the work range adjustment unit to allow or restrict the movement of the worker into the danger zone by adjusting the scope of the work area to expand to the danger zone or contract to the safety zone; further includes a notification unit that provides a notification to the worker, comprising a notification transmission rope that is arranged in parallel with the safety rope and is a separate rope independent of the safety rope and can be attached to the worker's harness, and a rope pulling unit capable of temporarily pulling the notification transmission rope; the control unit provides a warning notification to the worker by the tension transmitted to the harness by repeating a pulling operation of pulling the notification transmission rope by a predetermined length and returning it a predetermined number of times in response to the worker moving to or approaching the danger zone, and controls the notification unit to provide the warning notification to the worker by adjusting the strength and number of times the notification transmission rope is pulled according to the degree of the worker's approach to the danger zone. A fall prevention device comprising a safety rope lead device that includes a working range control unit that winds and accommodates the safety rope and controls the safety rope so that it is allowed to be pulled out only within a predetermined maximum pulling length range, wherein the safety rope lead device is provided with a gear that rotates along a rotating shaft connected to the safety rope, and the gear engages and locks when the safety rope is suddenly pulled, thereby preventing the pulling out of the safety rope. Claim 2 In claim 1, the safety rope is variable in length, and the work range adjustment unit is a fall prevention device that adjusts the range of the work area by varying the length of the safety rope. Claim 3 In paragraph 2, the above-mentioned horizontal bar further includes a rope moving rail installed along the above-mentioned horizontal direction to allow the movement of the safety rope, and the above-mentioned work range adjustment unit is a fall prevention device that controls the range of the above-mentioned work area by restricting the movement of the safety rope on the rope moving rail. Claim 4 delete Claim 5 delete

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