Mechanical mobile fall prevention device and method for working at heights using the same

Abstract

According to the present invention, a movable fall prevention device is provided, comprising: an upper frame (100); a lower support member (200) that supports the upper frame (100); and a safety rope mounting member (300) that is installed on the upper frame (100) and includes a safety hook (310) for coupling with an object (1); wherein the upper frame (100) comprises an extension frame (110) that can be extended upward; and a fixed frame (120) that supports the extension frame (110); and further comprising a winch system (400) that is installed on the fixed frame (120) and controls the vertical movement of the extension frame (110). According to the present invention, it has the effect of being easily installed in any workplace regardless of the workplace location, the worker's body size, the content of the work, etc.

Description

Technology Field

[0001] The present invention relates to a mechanical mobile fall prevention device for preventing fall accidents involving workers in cases where high-altitude work is required, such as in vehicle or bridge construction. More specifically, the invention relates to a mechanical mobile fall prevention device and a method for working at height using the same, which is capable of being disassembled into multiple components, has a small overall size and light weight for mobility, and is easy to use by being attachable to the work object itself, and which ensures the safety of the worker while increasing work efficiency by controlling the discharge of a safety rope to match the worker's body and working height. Background Technology

[0002] Working at high altitudes is unavoidable during most construction projects, such as roads, railways, housing, and factories, and safety bars or ropes must be installed to ensure the safety of workers.

[0003] However, work may be performed in spaces where the installation of such safety facilities is impossible, such as on vehicles. In particular, when bringing in or taking out materials, lifting equipment must perform rigging operations on the upper part of a transport vehicle to lift or unload materials. In this case, due to the varying sizes of the work vehicle, work location, work radius, and the physical size of the workers, there are currently no fixed safety facilities available to prevent falls.

[0004] Accordingly, fall prevention facilities are needed to ensure worker safety regardless of the workplace, worker, or work environment or content. The problem to be solved

[0005] The present invention was developed to solve the problems of the aforementioned conventional safety devices for work at height. The objective of the present invention is to provide a mechanical, portable fall prevention device that can be easily installed at any work site regardless of the work location, the worker's body size, or the nature of the work, and a method for work at height using the same.

[0006] Another objective of the present invention is to provide a mechanical mobile fall prevention device and a method for working at height using the same, which facilitates the easy installation and fixing of the lower support portion of the fall prevention device to ensure ease of movement and installation of the device.

[0007] Another objective of the present invention is to provide a mechanical mobile fall prevention device and a method for working at height using the same, which allows the height of the upper frame to be adjusted so that a larger working radius can be secured even when the working height is increased.

[0008] Another objective of the present invention is to provide a mechanical mobile fall prevention device and a method for working at height using the same, which allows the fixing and unlocking of a winch system for adjusting the height of an upper frame to be easily controlled regardless of the direction of the operator's hand. means of solving the problem

[0009] According to one aspect of the present invention, a movable fall prevention device is provided, comprising: an upper frame (100); a lower support member (200) supporting the upper frame (100); and a safety rope mounting member (300) installed on the upper frame (100) and including a safety hook (310) for coupling with an object (1); wherein the upper frame (100) comprises an extension frame (110) capable of extending upward; and a fixed frame (120) supporting the extension frame (110); and further comprising a winch system (400) installed on the fixed frame (120) and adjusting the vertical movement of the extension frame (110).

[0010] In this case, the winch system (400) may be a movable fall prevention device characterized by comprising: a first crossbar (410) formed on the extension frame (110); a second crossbar (420) connected to the first crossbar (410) by a rope (10) and moving the first crossbar (410) in an up-and-down direction by winding or unwinding the rope (10); and a winch (430) that rotates the second crossbar (420).

[0011] Additionally, the winch (430) may be a movable fall prevention device characterized by comprising: a first gear (431) coupled to the second crossbar (420); a second gear (432) engaged with the first gear (431) and rotating the first gear (431) according to the rotation of the rotation handle (434); and a third gear (433) coupled to the second crossbar (420) and engaged with a latch (435) that limits the rotation of the second crossbar (420).

[0012] Additionally, the winch system (400) may be a movable fall prevention device characterized by further including a horizontal bar (440) that is coupled to the latch (435) and releases the engagement between the latch (435) and the third gear (433).

[0013] Additionally, the winch (430) may be a movable fall prevention device characterized by being formed on both sides of the second crossbar (420).

[0014] Additionally, the above winch (430) may be a movable fall prevention device characterized by further including a fixed spring (436) that maintains the engagement state between the catch (435) and the third gear (433), wherein the catch (435) has a through hole (437) formed therein into which the end of the horizontal bar (440) is inserted, and further including a guide groove (438) that guides the movement of the horizontal bar (440), and wherein the engagement state between the catch (435) and the third gear (433) is released as the position of the horizontal bar (440) moves along the guide groove (438).

[0015] Additionally, the winch system (400) may be a movable fall prevention device further comprising a winch box (450) in which the first tooth (431), the second tooth (432), the third tooth (433), and the latch (435) are housed, wherein the guide groove (438) is formed on the winch box (450).

[0016] Additionally, the movable fall prevention device may further include a third crossbar (460) formed above the second crossbar (420) and having one end fixed to the second crossbar (420) and having the rope (10) stretched over it.

[0017] Additionally, the movable fall prevention device may be characterized by further including a moving wheel (500) formed on the lower support member (200).

[0018] Additionally, the lower support member (200) may be a movable fall prevention device characterized by including: a support member body (240); a horizontal outtruger (210) extending horizontally from the support member body (240); a rotating outtruger (220) rotating around a fixed axis (a); and a manual outtruger (230) that causes the lower surfaces of the horizontal outtruger (210) and the rotating outtruger (220) to be spaced apart from the ground at a certain distance.

[0019] Additionally, the horizontal outtruger (210) may be a movable fall prevention device characterized by including an extension frame (211) extending in a horizontal direction; and a support foot (212) supporting the extension frame (211).

[0020] Additionally, the rotating outtruger (220) may be a movable fall prevention device characterized by comprising: a main body (221) formed in a triangular shape; and a fixing pin (222) that fixes one end of the main body (221) to the support main body (240) and has the one end as the fixing axis (a).

[0021] Additionally, the lower support member (200) may be a movable fall prevention device characterized by including: a support member body (240); and a vertical outrigger (250) formed on the lower surface of the support member body (240) and movable in the up and down direction.

[0022] Additionally, the lower support member (200) may further include a lever frame (260) connecting the moving wheel (500) and the vertical outtruger (250), wherein the moving wheel (500) moves upward as the vertical outtruger (250) moves downward, and the device may be a movable fall prevention device.

[0023] Additionally, the lower support member (200) may be a movable fall prevention device characterized by further including a hydraulic pump (270) that moves the vertical outtruger (250) in an up-and-down direction.

[0024] Additionally, the device may further include a horizontal coupling part (600) that extends from the upper frame (100) and connects the upper frame (100) to the vehicle (2), wherein a magnet (610) is formed at the end of the horizontal coupling part (600).

[0025] According to another aspect of the present invention, a method for working at height using a mobile fall prevention device comprises: a first step (S100) of moving the mobile fall prevention device to the vicinity of a vehicle (10) using the moving wheel (500); a second step (S200) of moving the manual outtruger (230) downward; a third step (S300) of extending the horizontal outtruger (210) in a horizontal direction and rotating the rotary outtruger (220) downward; and a fourth step (S400) of moving the manual outtruger (230) upward so that the lower surface of the support foot (212) and the rotary outtruger (220) touch the ground. The method of working at height may be characterized by including a fifth step (S500) of moving the extension frame (110) upward by rotating the rotary handle (434) while the engagement between the latch (435) and the third gear (433) is released.

[0026] According to another aspect of the present invention, a method for working at height using a mobile fall prevention device may be characterized by comprising: a first step (A100) of moving the mobile fall prevention device to the vicinity of a vehicle (10) using the moving wheel (500); a second step (A200) of moving the vertical outtruger (250) downward and moving the moving wheel (500) upward using the hydraulic pump (270); and a third step (A300) of moving the extension frame (110) upward by rotating the rotating handle (434) while the engagement between the latch (435) and the third gear (433) is released. Effects of the invention

[0027] According to the present invention, it has the effect of being easily installed in any workplace regardless of the workplace location, the worker's body size, the content of the work, etc.

[0028] According to the present invention, the lower support portion of the fall prevention device can be easily installed and fixed, thereby ensuring ease of movement and installation of the device.

[0029] According to the present invention, by allowing the height of the upper frame to be adjusted, it is possible to secure a larger working radius even when the working height is increased.

[0030] According to the present invention, the fixing and unlocking of a winch system for adjusting the height of an upper frame can be easily adjusted regardless of the direction of the operator's hand. Brief explanation of the drawing

[0031] FIGS. 1 to 12 relate to a movable fall prevention device according to an embodiment of the present invention. Additionally, FIGS. 13 to 16 relate to a movable fall prevention device according to another embodiment of the present invention. Specific details for implementing the invention

[0032] An embodiment of a mechanical mobile fall prevention device and a method for working at height using the same according to the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are assigned the same drawing number, and redundant descriptions thereof will be omitted.

[0033] Furthermore, terms such as "first," "second," etc. used below are merely identifiers to distinguish identical or corresponding components, and identical or corresponding components are not limited by terms such as "first," "second," etc.

[0034] In addition, regarding the contact relationship between each component, the term "combination" is used not only to mean cases where each component is in direct physical contact with each other, but also to encompass cases where another component is interposed between each component and each component is in contact with that other component.

[0035] The present invention relates to a portable fall prevention device for preventing fall accidents of workers working at heights.

[0036] A movable fall prevention device according to one embodiment of the present invention may include an upper frame (100), a lower support member (200) supporting the upper frame (100), a safety rope mounting member (300) installed on the upper frame (100) and including a safety hook (310) for coupling with an object (1), and a movable wheel (500) formed on the lower support member (200) (Fig. 1).

[0037] The worker can prevent falling during high-altitude work by combining the loop provided on the clothing with the safety loop (310).

[0038] The upper frame (100) may include an extension frame (110) that can be extended upward and a fixed frame (120) that supports the extension frame (110) (Fig. 1). Preferably, the fixed frame (120) may support the extension frame (110) on both sides.

[0039] The extension frame (110) can be adjusted to move up and down by a winch system (400) provided on the fixed frame (120).

[0040] The winch system (400) may include a first crossbar (410) formed on an extension frame (110), a second crossbar (420) connected to the first crossbar (410) by a rope (10) and moving the first crossbar (410) in an up-and-down direction by winding or unwinding the rope (10), and a winch (430) that rotates the second crossbar (420) (Fig. 1).

[0041] In this case, the winch (430) may include a first gear (431) coupled to a second crossbar (420), a second gear (432) that engages with the first gear (431) and rotates the first gear (431) according to the rotation of a rotation handle (434), a third gear (433) coupled to the second crossbar (420) and engaged with a latch (435) that limits the rotation of the second crossbar (420), and a winch box (450) in which the first gear (431), the second gear (432), the third gear (433), and the latch (435) are stored (Fig. 5).

[0042] The latch (435) basically restricts the rotation of the rotating handle (434) by the elasticity of the fixed spring (436) that maintains the engagement state of the third gear (433). This is to prevent the rotating handle (434) from rotating arbitrarily and changing the height of the extension frame (110) in the event of a worker falling.

[0043] The engagement between the latch (435) and the third tooth (433) can be released by the configuration of the horizontal bar (440) (Figs. 5, 6).

[0044] Specifically, the end of the horizontal bar (440) is installed in a state where it is inserted into a through hole (437) formed in the latch (435). In addition, the movable fall prevention device according to the present invention may further include a guide groove (438) that guides the movement of the horizontal bar (440). The guide groove (438) may be formed on the winch box (450) (Fig. 8).

[0045] Accordingly, as the position of the horizontal bar (440) moves along the guide groove (438), the engagement state between the latch (435) and the third gear (433) can be released.

[0046] The winch (430) of the movable fall prevention device according to the present invention may be formed on both sides of the second crossbar (420).

[0047] Accordingly, regardless of whether the operator's hand is on the right or left, the operator can move the extension frame (110) up and down by rotating the rotating handle (434) with the other hand while moving the horizontal bar (440) with one hand.

[0048] Since the workers targeted by the present invention are those who perform high-altitude work, according to the present invention, the advantage of being able to easily operate the winch system (400) regardless of the direction of work, the direction of the worker's hand, etc. can be secured.

[0049] A winch system (400) of a movable fall prevention device according to one embodiment of the present invention may further include a third crossbar (460) formed above the second crossbar (420) and over which the rope (10), with one end fixed to the second crossbar (420), is stretched (Fig. 1).

[0050] The third crossbar (460) allows the worker to adjust the height of the extension frame (110) with a small amount of force according to the pulley principle.

[0051] The safety rope mounting part (300) may include a safety hook (310) for coupling with a worker, which is a connection target (1), a safety rope discharge part (320) for discharging or retrieving a rope connected to the safety hook (310), and a support bar (320) that supports the safety rope discharge part and adjusts its position according to the movement of the worker (Fig. 1).

[0052] A movable fall prevention device according to one embodiment of the present invention may further include a horizontal coupling part (600) that is formed extending from an upper frame (100) and connects the upper frame (100) to a vehicle (2).

[0053] In this case, a magnet (610) may be formed at the end of the horizontal joint (600).

[0054] Accordingly, the horizontal connecting part (600) can be fixed to a work object such as a vehicle to ensure the structural stability of the fall prevention device.

[0055] A mobile fall prevention device according to one embodiment of the present invention is provided with a wheel (500) for movement. However, when a worker performs high-altitude work, it is required that the lower structure be fixedly supported on the ground. Accordingly, the mobile fall prevention device according to the present invention adopts a structure of a variable lower support member (200). That is, when moving by the wheel (500), the support structure is not formed to prevent friction with the ground, but when the equipment is installed on a vehicle, the support structure is formed.

[0056] Specifically, the lower support member (200) of the movable fall prevention device according to one embodiment of the present invention may include a support member body (240), a horizontal outtruger (210) extending horizontally from the support member body (240), a rotating outtruger (220) rotating around a fixed axis (a), and a manual outtruger (230) that causes the lower surfaces of the horizontal outtruger (210) and the rotating outtruger (220) to be spaced apart from the ground at a certain distance (Fig. 9).

[0057] In this case, the horizontal outtruger (210) may include an extension frame (211) extending in a horizontal direction and a support foot (212) supporting the extension frame (211).

[0058] Additionally, the rotating outtruger (220) may include a main body (221) formed in a triangular shape and a fixing pin (222) that fixes one end of the main body (221) to the supporting main body (240) using the fixing shaft (a). The main body (221) of the rotating outtruger (220) may be mounted on a mounting projection (241) formed on the supporting main body (240).

[0059] The manual outrigger (210) may include a second support foot (211) that moves in an up-and-down direction, a column (212) coupled to the second support foot (211), a protrusion (213) formed on the outer surface of the column (212), and a pressure handle (214) that applies a load to the protrusion (213) to move the column (212) and the second support foot (211) downward.

[0060] In this case, an inlet groove (215) into which a projection (213) is inserted may be formed at the lower end of the pressure handle (214). When the projection (213) is inserted into the inlet groove (215), the position of the second support foot (211) that has been moved downward is fixed.

[0061] Accordingly, the operator can use the pressure handle (214) to bring the second support leg (211) into contact with the ground, move the horizontal outtruger (210) and the rotating outtruger (220) which are spaced apart from the ground downward, and then use the pressure handle (214) again to move the second support leg (211) upward, so that the support leg (212) of the horizontal outtruger (210) and the lower surface of the main body (211) of the rotating outtruger (220) naturally come into contact with the ground, thereby forming a stable support structure.

[0062] According to another embodiment of the present invention, the lower support member (200) may include a support member body (240) and a vertical outrigger (250) formed on the lower surface of the support member body (240) and movable in an up-and-down direction (Figs. 13, 14).

[0063] In this case, the lower support member (200) further includes a lever frame (260) connecting the movable wheel (500) and the vertical outtruger (250), and the movable wheel (500) can move upward as the vertical outtruger (250) moves downward (Fig. 16).

[0064] The vertical outrigger (250) can be moved up and down manually, and it is also possible to install a separate hydraulic pump (270).

[0065] A method for working at height using a mobile fall prevention device according to one embodiment of the present invention is described.

[0066] The high-altitude work method may include a first step (S100) of moving a mobile fall prevention device to the vicinity of a vehicle (10) using a moving wheel (500), a second step (S200) of moving a manual outtruger (230) downward, a third step (S300) of extending a horizontal outtruger (210) in a horizontal direction and rotating an outtruger (220) downward, a fourth step (S400) of moving the manual outtruger (230) upward so that the lower surface of the support foot (212) and the rotating outtruger (220) touch the ground, and a fifth step (S500) of moving an extension frame (110) upward by rotating a rotating handle (434) while the engagement between the latch (435) and the third gear (433) is released.

[0067] A method for working at height using a mobile fall prevention device according to another embodiment of the present invention will be described.

[0068] The high-altitude work method may include a first step (A100) of moving a movable fall prevention device to the vicinity of a vehicle (10) using a moving wheel (500), a second step (A200) of moving a vertical outtruger (250) downward using a hydraulic pump (270) and moving the moving wheel (500) upward, and a third step (A300) of moving an extension frame (110) upward by rotating a rotating handle (434) while the engagement between the latch (435) and the third gear (433) is released.

[0069] The effects of the present invention are summarized as follows.

[0070] First, the mobile fall prevention system according to the present invention is formed with components that can be separated and combined, making it possible to apply it to any work location or target.

[0071] Second, by providing an attachment part utilizing magnetic force, mounting and detaching to the object is easy.

[0072] Third, the height of the upper frame can be adjusted, allowing for a wider range of working positions and working radii.

[0073] Fourth, the discharge length of the safety rope is automatically controlled based on the working height and the characteristics of the worker (weight, height, etc.), making it easy to use and minimizing the occurrence of safety accidents.

[0074] Fifth, the device can be easily moved and fixed by using a variable lower support.

[0075] Sixth, the horizontal bar of the winch unit allows for easy release of the latch regardless of the working direction or the type of hand used by the operator.

[0076] The foregoing merely describes some preferred embodiments that can be implemented by the present invention. As is well known, the scope of the present invention should not be interpreted as being limited to the above embodiments, and all technical concepts that share the fundamental principles with the technical concept of the present invention described above shall be considered to be included within the scope of the present invention. Explanation of the symbols

[0077] 100 : Upper frame 200 : Lower support 300: Safety rope mounting part 400 : Winch System 500 : Wheels 600 : Horizontal joint

Claims

Claim 1 The apparatus comprises: an upper frame (100); a lower support member (200) supporting the upper frame (100); and a safety rope mounting member (300) installed on the upper frame (100) and including a safety hook (310) for coupling with an object (1); wherein the upper frame (100) comprises: an extension frame (110) capable of extending upward; and a fixed frame (120) supporting the extension frame (110); and further comprises a winch system (400) installed on the fixed frame (120) and adjusting the vertical movement of the extension frame (110); wherein the winch system (400) comprises: a first crossbar (410) formed on the extension frame (110); and a second crossbar (420) connected to the first crossbar (410) by a rope (10) and moving the first crossbar (410) vertically by winding or unwinding the rope (10). A movable fall prevention device comprising: a winch (430) for rotating the second crossbar (420); wherein the winch (430) comprises: a first gear (431) coupled to the second crossbar (420); a second gear (432) that engages with the first gear (431) and rotates the first gear (431) according to the rotation of a rotation handle (434); and a third gear (433) coupled to the second crossbar (420) and engaged with a latch (435) that limits the rotation of the second crossbar (420); and wherein the winch system (400) further comprises a horizontal bar (440) coupled to the latch (435) and releasing the engagement between the latch (435) and the third gear (433). Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A movable fall prevention device according to claim 1, characterized in that the winch (430) is formed on both sides of the second crossbar (420). Claim 6 In claim 5, the winch (430) further includes a fixed spring (436) that maintains the engagement state between the catch (435) and the third gear (433), wherein the catch (435) has a through hole (437) formed therein into which the end of the horizontal bar (440) is inserted, and further includes a guide groove (438) that guides the movement of the horizontal bar (440), and wherein the engagement state between the catch (435) and the third gear (433) is released as the position of the horizontal bar (440) moves along the guide groove (438). Claim 7 In claim 6, the winch system (400) further comprises a winch box (450) in which the first gear (431), the second gear (432), the third gear (433), and the latch (435) are housed, wherein the guide groove (438) is formed on the winch box (450), characterized in that it is a movable fall prevention device. Claim 8 A movable fall prevention device according to claim 7, further comprising a third crossbar (460) formed above the second crossbar (420) and having one end fixed to the second crossbar (420) and having the rope (10) stretched over it. Claim 9 A movable fall prevention device characterized by further including, in claim 8, a moving wheel (500) formed on the lower support member (200). Claim 10 A movable fall prevention device according to claim 9, wherein the lower support member (200) comprises: a support member body (240); a horizontal outtruger (210) extending horizontally from the support member body (240); a rotating outtruger (220) rotating around a fixed axis (a); and a manual outtruger (230) that causes the lower surfaces of the horizontal outtruger (210) and the rotating outtruger (220) to be spaced apart from the ground at a certain distance. Claim 11 A movable fall prevention device according to claim 10, wherein the horizontal outtruger (210) comprises an extension frame (211) extending in a horizontal direction; and a support foot (212) supporting the extension frame (211). Claim 12 A movable fall prevention device according to claim 11, wherein the rotating outtruger (220) comprises: a main body (221) formed in a triangular shape; and a fixing pin (222) that fixes one end of the main body (221) to the fixed shaft (a) and fixes the one end to the support main body (240). Claim 13 A movable fall prevention device according to claim 9, wherein the lower support member (200) comprises: a support member body (240); and a vertical outrigger (250) formed on the lower surface of the support member body (240) and movable in the up and down direction. Claim 14 In claim 13, the lower support member (200) further comprises a lever frame (260) connecting the movable wheel (500) and the vertical outtruger (250), wherein the movable wheel (500) moves upward as the vertical outtruger (250) moves downward. Claim 15 A movable fall prevention device according to claim 14, wherein the lower support member (200) further includes a hydraulic pump (270) that moves the vertical outrigger (250) in an up-and-down direction. Claim 16 A movable fall prevention device according to claim 10 or 13, further comprising a horizontal coupling part (600) that extends from the upper frame (100) and connects the upper frame (100) to a vehicle (2), wherein a magnet (610) is formed at the end of the horizontal coupling part (600). Claim 17 A method for working at height using a mobile fall prevention device according to claim 12, comprising: a first step (S100) of moving the mobile fall prevention device to the vicinity of a vehicle (10) using the moving wheel (500); a second step (S200) of moving the manual outtruger (230) downward; a third step (S300) of extending the horizontal outtruger (210) in a horizontal direction and rotating the rotary outtruger (220) downward; and a fourth step (S400) of moving the manual outtruger (230) upward so that the lower surface of the support foot (212) and the rotary outtruger (220) touch the ground. A method for working at height, characterized by including: a fifth step (S500) of moving the extension frame (110) upward by rotating the rotary handle (434) while the engagement between the above-mentioned latch (435) and the above-mentioned third gear (433) is released. Claim 18 A method for working at height using a movable fall prevention device according to claim 15, comprising: a first step (A100) of moving the movable fall prevention device to the vicinity of a vehicle (10) using the movable wheel (500); a second step (A200) of moving the vertical outtruger (250) downward and moving the movable wheel (500) upward using the hydraulic pump (270); and a third step (A300) of moving the extension frame (110) upward by rotating the rotating handle (434) while the engagement between the latch (435) and the third gear (433) is released.

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