Ladder foot slipping prevention device for preventing fall accident

Abstract

Disclosed is a ladder foot slipping prevention device for preventing a fall accident, wherein the device is mounted on a ladder to prevent the foot of a user, using the ladder, from slipping inward from the ladder, and enables the user, using the ladder, to maintain stable foot placement. The ladder foot slipping prevention device for preventing a fall accident comprises: a frame assembly disposed parallel to supports and accommodated between the supports or protruding to the outside of the supports to be disposed in front of the supports; multiple link members, each of which is disposed in the longitudinal direction of the supports, has a portion rotatably coupled to the supports, has the other portion rotatably coupled to the frame assembly, and arranges the frame assembly between the supports or in front of the supports; and multiple auxiliary steps which are coupled to and supported by the frame assembly, and are arranged in the longitudinal direction of the frame assembly.

Description

Ladder slip prevention device to prevent falls

[0001] The present invention relates to a ladder slip prevention device for preventing falling accidents.

[0002] Ladders, which are generally designed to allow users to step up when performing work at high places, are useful when moving between various places in industrial sites or at home, and when work is required at heights that exceed a person's height.

[0003] Ladders are formed in various structures, such as A-type, H-type, and composite types.

[0004] A ladder consists of a pair of supporting legs (bracelets) that are supported on the ground, and stepping stones (steps) that are placed between the supporting legs (bracelets) along the length of the ladder and that the worker steps on to climb up.

[0005] As a prior art for such ladders, a ‘ladder leg length adjustment device’ was proposed in Republic of Korea Utility Model Publication No. 20-0347538 (announced on July 17, 2004).

[0006] However, since conventional ladders have an open front and rear space, when a worker climbs onto the ladder, the worker's feet protrude into the open space of the ladder.

[0007] Accordingly, there was a problem in which a safety accident occurred when a worker's foot slipped from the step while using the ladder or when the worker misstepped and the worker's foot fell into the open inside of the ladder.

[0008] The present invention has been devised to solve the above-mentioned problems, and the purpose of the present invention is to provide a ladder foot-fall prevention device that is mounted on a ladder and prevents the feet of a user using the ladder from falling inside the ladder, and enables a user using the ladder to have a stable foothold, thereby preventing a fall accident.

[0009] Another object of the present invention is to provide a ladder slip prevention device for preventing falls, which minimizes wind resistance by applying an air flow structure and allows easy storage by applying a folding structure.

[0010] Another object of the present invention is to provide a ladder slip prevention device capable of adjusting the gap between the step and the auxiliary step to prevent falls.

[0011] Another object of the present invention is to provide a ladder slip prevention device capable of expanding the stepping area to prevent falls.

[0012] Another object of the present invention is to provide a detachable ladder slip prevention device that can be detachably attached to a ladder as needed to prevent falling accidents.

[0013] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0014] In order to solve the above problem, a ladder slip prevention device for preventing a fall accident according to an embodiment of the present invention is installed on a ladder including braces that are supported on the ground and spaced apart from each other, and a plurality of stepping stones arranged between the braces along the longitudinal direction of the braces, the ladder comprising: a frame assembly arranged parallel to the braces, accommodated between the braces or protruding outwardly of the braces and arranged in front of the braces; link members arranged in a plurality of ways along the longitudinal direction of the braces, some of which are rotatably coupled to the braces and other of which are rotatably coupled to the frame assembly, the link members arranging the frame assembly between the braces or in front of the braces; and auxiliary stepping stones that are coupled to and supported by the frame assembly and arranged in a plurality of ways along the longitudinal direction of the frame assembly.

[0015] The frame assembly may include reinforcing frames respectively disposed at the top and bottom of the frame assembly; and side frames respectively coupled to the left and right ends of the reinforcing frames and rotatably coupled to the link members; and the side frames may each include step receiving grooves for receiving the steps when received between the braces.

[0016] The frame assembly further includes an anti-slip plate that is coupled to the reinforcing frames and the side frames to shield the open front of the frame assembly, and the anti-slip plate may include air flow holes through which wind can pass.

[0017] Further comprising link brackets, each of which is coupled to the above supports and each of which link members are rotatably coupled; wherein the link brackets can be configured to limit the rotation angle of the link members rotated toward the front of the support.

[0018] Each of the above link brackets may include a link support member on which an end of the link member rotated toward the front of the support member is hung and supported.

[0019] The above auxiliary steps may each include a base plate that is supported by being joined to the frame assembly; and a step plate that is integrally joined to the base plate and positioned at a preset angle with respect to one surface of the base plate.

[0020] The above auxiliary steps may further include an auxiliary step plate, each integrally connected to the base plate and positioned opposite the step plate along the width direction of the base plate.

[0021] The above auxiliary stepping plates may further include a reinforcing plate disposed between the stepping plate and the auxiliary stepping plate to support the stepping plate and the auxiliary stepping plate.

[0022] In addition, a slip-prevention device for a ladder for preventing a fall accident according to the present invention is a slip-prevention device for a ladder installed on a ladder including braces that are supported on the ground and spaced apart from each other, and a plurality of steps arranged between the braces along the longitudinal direction of the braces, the device comprising: a frame assembly arranged parallel to the braces; a plurality of link members arranged along the longitudinal direction of the braces or the frame assembly, a portion of which is rotatably coupled to the frame assembly; a plurality of auxiliary steps that are coupled to and supported by the frame assembly and arranged along the longitudinal direction of the frame assembly; link brackets to which other portions of the link members are rotatably coupled, respectively; and a detachable coupling portion that detachably couples the link brackets to the braces, respectively.

[0023] Here, the detachable coupling part may include a movable bar having a portion movably or rotatably connected to the link bracket; a movable bar fixing means for fixing and releasing another portion of the movable bar to the link bracket; and an insertion groove formed by being dug into the link bracket or the movable bar so that the support can be inserted between the link bracket and the movable bar while the other portion of the movable bar is fixed to the link bracket.

[0024] Here, the moving bar may be formed with a long hole in one part thereof and connected to the link bracket so as to be movable and rotatably connected, and the moving bar fixing means may include a catch formed protrudingly in another part of the moving bar; and a catch groove formed in a shape in which the catch can be caught after being inserted into the link bracket.

[0025] Here, the link brackets are formed as a pair corresponding to each other, and another part of the link member and the moving bar are positioned inside them, and the latch groove can be formed.

[0026] Here, the moving bar may include a part of which is rotatably hinge-connected to the link bracket and a hook part extended to a certain length is formed on another part of which, and the moving bar fixing means may include a base part fixed to one side of the link bracket; a hook part of which one end is formed in a ring shape, the other end is hinge-connected to the base part and rotates, and one end is capable of being hooked to the hook part; and a pressing fixing part of which is hinge-connected to the base part by a hinge axis and rotates, and the other end of the hook part is eccentrically connected to the hinge axis so as to pull and fix the hook part by an external force in a state where one end of the hook part is hooked to the hook part.

[0027] According to an embodiment of the present invention, when the frame assembly is placed in front of the supports, the auxiliary steps form an auxiliary stepping area in front of the steps, so that the user can use the ladder stably while stepping on the steps and the auxiliary steps together.

[0028] Additionally, since an anti-slip plate is attached to the opening of the frame assembly, safety accidents caused by slipping when using the ladder can be prevented.

[0029] In addition, air flow holes are formed in the anti-slip plate attached to the opening of the frame assembly, thereby minimizing wind resistance and preventing the ladder from shaking due to wind resistance applied to the anti-slip cover.

[0030] Additionally, the frame assembly can be selectively folded or unfolded through the link members, making storage easy.

[0031] Additionally, since the link member is configured to be adjustable in length, the gap between the frame assembly and the ladder can be adjusted to suit the user's convenience, thereby improving the convenience of the worker.

[0032] In addition, since the auxiliary step is formed with a telescopic structure, the stepping area can be expanded to secure a sufficient stepping surface, thereby improving safety.

[0033] Additionally, since the position of the frame assembly can be varied in the longitudinal direction of the ladder through the cover lifting units, the positions of the auxiliary step and the anti-slip plate can be varied in response to the position of the worker.

[0034] Additionally, the anti-slip device can be detachably attached to the ladder as needed, increasing convenience of use.

[0035] The effects according to the present invention are not limited to those exemplified above, and more diverse effects are included within the present invention.

[0036] Figure 1 is a perspective view showing a state in which a ladder foot-slip prevention device for preventing a fall accident according to an embodiment of the present invention is installed on a ladder.

[0037] FIG. 2 is a side cross-sectional view schematically showing a folded state of a ladder slip prevention device for preventing falls according to an embodiment of the present invention.

[0038] FIG. 3 is a side cross-sectional view schematically showing an unfolded state of a ladder slip prevention device for preventing falls according to an embodiment of the present invention.

[0039] Fig. 4 is a perspective view showing a state in which a slip prevention plate is combined with a frame assembly according to an embodiment of the present invention.

[0040] FIG. 5 is a plan view schematically showing a process of adjusting the length of a link member according to an embodiment of the present invention.

[0041] Fig. 6 is a side view showing a first link part and a second link part according to an embodiment of the present invention.

[0042] Fig. 7 is a perspective view showing a state in which a link member is coupled to a link bracket according to an embodiment of the present invention.

[0043] Fig. 8 is a side cross-sectional view showing an auxiliary step according to an embodiment of the present invention.

[0044] Fig. 9 is a side cross-sectional view showing a state in which an auxiliary step plate and a reinforcing plate are combined on an auxiliary step according to an embodiment of the present invention.

[0045] Fig. 10 is a side cross-sectional view schematically showing the process of expanding an auxiliary step according to an embodiment of the present invention.

[0046] Fig. 11 is a side cross-sectional view schematically showing a state in which an elastic fixing member according to an embodiment of the present invention is coupled to a stepping stone.

[0047] Fig. 12 is a schematic drawing of a cover lifting unit according to an embodiment of the present invention.

[0048] Fig. 13 is a perspective view showing a state in which a ladder slip prevention device having a detachable coupling part according to the first embodiment of the present invention is installed on a ladder.

[0049] FIG. 14 is a perspective view schematically showing the operation for attaching and detaching a ladder slip prevention device having a detachable coupling portion according to the first embodiment of the present invention.

[0050] Fig. 15 is a perspective view of the main parts showing a state in which a ladder slip prevention device having a detachable coupling part according to the first embodiment of the present invention is installed on a ladder.

[0051] Fig. 16 is a perspective view of the main parts of a ladder slip prevention device having a detachable coupling portion according to the second embodiment of the present invention.

[0052] Fig. 17 is a perspective view schematically showing the operation for attaching and detaching a ladder slip prevention device having a detachable coupling part according to a third embodiment of the present invention.

[0053] Fig. 18 is a perspective view of the main parts showing a state in which a ladder slip prevention device having a detachable coupling part according to a third embodiment of the present invention is installed on a ladder.

[0054] <Brief explanation of major drawing symbols>

[0055] 1000 Ladder Anti-Slip Device

[0056] 1 frame assembly

[0057] 2 Link absence

[0058] 3 auxiliary steps

[0059] 4 elastic fasteners

[0060] 5 cover lifting unit

[0061] 6-link bracket

[0062] 7 Detachable joint

[0063] L ladder

[0064] L1 brace

[0065] L2 stepping stone

[0066] According to an embodiment of the present invention, a ladder slip prevention device for preventing a fall accident is installed on a ladder including braces that are supported on the ground and spaced apart from each other, and a plurality of stepping stones arranged between the braces along the longitudinal direction of the braces, the ladder comprising: a frame assembly arranged parallel to the braces, accommodated between the braces or protruding outwardly of the braces and arranged in front of the braces; link members arranged in a plurality of ways along the longitudinal direction of the braces, some of which are rotatably coupled to the braces and other of which are rotatably coupled to the frame assembly, the link members arranging the frame assembly between the braces or in front of the braces; and auxiliary stepping stones that are coupled to and supported by the frame assembly and arranged in a plurality of ways along the longitudinal direction of the frame assembly.

[0067] Hereinafter, embodiments are described in detail with reference to the attached drawings.

[0068] However, the embodiments may be modified in various ways, and the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are included within the scope of the patent application.

[0069] Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms.

[0070] Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present disclosure includes modifications, equivalents, or alternatives included in the technical idea.

[0071] Although terms such as "first" or "second" may be used to describe various components, these terms should be interpreted solely to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

[0072] When it is said that a component is "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but there may also be other components in between.

[0073] The terms used in the examples are for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood to not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0074] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments pertain. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0075] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing embodiments, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

[0076] The advantages and features of the present invention and the method for achieving them will become clear with reference to the embodiments described in detail below together with the attached drawings.

[0077] However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and these embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform a person having ordinary skill in the art to which the present invention pertains of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0078] In the embodiments of the present invention, unless otherwise defined, all terms, including technical or scientific terms, used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in the embodiments of the present invention.

[0079] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the matters illustrated. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When the terms “includes,” “has,” and “consists of” are used in this specification, other parts may be added unless “only” is used. When a component is expressed in the singular, it includes a case where the plural is included unless there is a specifically explicit description.

[0080] When interpreting a component, it is interpreted as including the margin of error even if there is no separate explicit description.

[0081] When describing a positional relationship, for example, when the positional relationship between two parts is described as 'on top of', 'upper part of', 'lower part of', 'next to', etc., one or more other parts may be located between the two parts, unless 'right away' or 'directly' is used.

[0082] When elements or layers are referred to as being "on" another element or layer, this includes both directly on the other element or layer, or intervening layers or elements. Like reference numerals throughout the specification refer to like elements.

[0083] The size and thickness of each component shown in the drawing are shown for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the component shown.

[0084] The individual features of the various embodiments of the present invention can be partially or wholly combined or combined with each other, and as can be fully understood by those skilled in the art, various technical connections and operations are possible, and each embodiment can be implemented independently of each other or can be implemented together in a related relationship.

[0085] FIG. 1 is a perspective view showing a state in which a ladder slip prevention device for preventing a fall accident according to an embodiment of the present invention is installed on a ladder, FIG. 2 is a side sectional view schematically showing a state in which a ladder slip prevention device for preventing a fall accident according to an embodiment of the present invention is folded, and FIG. 3 is a side sectional view schematically showing a state in which a ladder slip prevention device for preventing a fall accident according to an embodiment of the present invention is unfolded.

[0086] Referring to FIG. 1, a ladder slip-prevention device (1000) for preventing a fall accident according to an embodiment of the present invention (hereinafter referred to as a “ladder slip-prevention device (1000) for preventing a fall accident”) is installed on a ladder (L) including braces (L1) that are supported on the ground and spaced apart from each other, and stepping stones (L2) that are arranged in a plurality along the length direction of the braces (L1) between the braces (L1).

[0087] Referring to FIGS. 1 to 3, the ladder slip prevention device (1000) for preventing a fall accident is configured to be arranged in a folded state stored between the braces (L1) as shown in FIG. 2, or in an unfolded state protruding forward of the braces (L1) and arranged in the inner space of the ladder (L) as shown in FIG. 3.

[0088] At this time, the ladder slip prevention device (1000) for preventing falls, which is placed in an unfolding state, forms an auxiliary stepping area in front of the step (L2), thereby supporting the user's feet on the step (L2) more stably, thereby preventing the user's feet from falling into the inner space of the ladder (L).

[0089] Here, the space where the user using the ladder (L) is placed is called the outer space of the ladder (L), and the space opposite to it is called the inner space of the ladder (L).

[0090] Referring to FIGS. 2 and 3, the ladder slip prevention device (1000) for preventing falling accidents includes a frame assembly (1), link members (2), and auxiliary steps (3).

[0091] The frame assembly (1) is arranged parallel to the brace (L1) and is supported by being joined to link members (2).

[0092] The frame assembly (1) is accommodated between the braces (L1) by the rotation of the link members (2), or is positioned in front of the braces (L1) by protruding outward from the braces (L1).

[0093] Specifically, the frame assembly (1) may include reinforcing frames (12) arranged at the top and bottom of the frame assembly (1), respectively, and side frames (13) coupled to the left and right ends of the reinforcing frames (12), respectively, and rotatably coupled to the link members (2).

[0094] Additionally, each side frame (13) may be formed with step accommodating grooves (131) in which step accommodating grooves (L2) are accommodated when the side frame (13) is accommodated between the supports (L1).

[0095] Through this, the ladder slip prevention device (1000) for preventing falls can be stored more efficiently on the ladder (L).

[0096] Fig. 4 is a perspective view showing a state in which a slip prevention plate is combined with a frame assembly according to an embodiment of the present invention.

[0097] Additionally, the frame assembly (1) may further include an anti-slip plate (11).

[0098] The anti-slip plate (11) can be connected to the reinforcing frames (12) and side frames (13) to shield the open front of the frame assembly (1).

[0099] Accordingly, it is possible to prevent the user's feet standing on the step (L2) and auxiliary step (3) from falling into the inner space of the ladder (L).

[0100] At this time, the anti-slip plate (11) may include air flow holes (111) through which wind can pass.

[0101] Through this, the safety of the ladder (L) can be improved by preventing the anti-slip plate (11) from flowing due to wind resistance.

[0102] Link members (2) are arranged in multiple numbers along the length of the brace (L1) or frame assembly (1).

[0103] A portion of the link members (2) is rotatably connected to the supports (L1), and another portion of the link members (2) is rotatably connected to the frame assembly (1).

[0104] Accordingly, the link members (2) are rotated to place the frame assembly (1) between the supports (L1) or in front of the supports (L1).

[0105] Specifically, when the link members (2) are arranged parallel to the braces (L1), the frame assembly (1) is arranged between the braces (L1), and when the link members (2) are arranged perpendicular to the braces (L1), the frame assembly (1) is arranged in front of the braces (L1).

[0106] Meanwhile, the link member (2) can be configured to adjust the distance between the frame assembly (1) and the ladder (L) while the frame assembly (1) is positioned in front of the supports (L1).

[0107] Figure 5 is a plan view schematically showing a process of adjusting the length of a link member according to an embodiment of the present invention.

[0108] Referring to FIGS. 3 and 5, the link member (2) may include a guide bracket (21), a first link portion (22), a second link portion (23), and a length adjustment stopper (24).

[0109] The guide bracket (21) is arranged between the first link portion (22) and the second link portion (23) to support the first link portion (22) and the second link portion (23) and to guide the sliding movement of the first link portion (22) and the second link portion (23).

[0110] The guide bracket (21) can be formed as a tubular structure with a hollow interior.

[0111] A slide groove (211) may be formed inside the guide bracket (21) to allow the first link portion (22) and the second link portion (23) to be slidably coupled.

[0112] Fig. 6 is a side view showing a first link part and a second link part according to an embodiment of the present invention.

[0113] Referring to FIGS. 5 and 6, a part of the first link portion (22) is rotatably coupled to the support (L1), and another part of the first link portion (22) is accommodated in the slide groove (211) and can be slidably coupled to the guide bracket (21).

[0114] The first link portion (22) may include a first head portion (221) that is rotatably connected to a support (L1) through a fastening means such as a bolt, and a first body portion (222) that extends from the first head portion (221) and is arranged to be slidable along the inner surface of the second link portion (23), and has first pin-joining holes (222A) formed therein through which a length-adjusting stopper (24) is penetrated and connected.

[0115] At this time, the first pin coupling holes (222A) can be arranged in multiple numbers along the longitudinal direction of the first body part (222).

[0116] A part of the second link part (23) is rotatably coupled to the side plate (13), and another part of the second link part (23) is accommodated in the slide groove (211) and can be slidably coupled to the guide bracket (21).

[0117] The second link portion (23) may include a second head portion (231) that is rotatably connected to the side plate (13) through a fastening means such as a bolt, and a second body portion (232) that extends from the second head portion (231) and is arranged to slide along the outer surface of the first body portion (222), and has second pin-joining holes (232A) formed therein through which a length-adjusting stopper (24) is penetrated and connected.

[0118] At this time, the second pin coupling holes (232A) may be arranged in multiple locations along the longitudinal direction of the second body part (232). In addition, the second pin coupling holes (232A) may be arranged in multiple locations along the width direction of the second body part (232).

[0119] Referring to FIG. 5, the length adjustment stopper (24) is coupled to the guide bracket (21) and can be configured to penetrate the first link portion (22) and the second link portion (23) to fix the first link portion (22) and the second link portion (23).

[0120] The length adjustment stopper (24) may include a stopper housing (241), a link fixing pin (242), and a pin elastic support member (243).

[0121] The stopper housing (241) is coupled to the outer surface of the guide bracket (21) and can be communicated with the inner space of the guide bracket (21).

[0122] Referring to FIGS. 5 and 6, the link fixing pin (242) is coupled to the stopper housing (241) and passes through the first pin coupling hole (222A) and the second pin coupling holes (232A) aligned in a row along the width direction of the link member (2) to restrict the movement of the first link part (22) and the second link part (23), or is separated from the first pin coupling hole (222A) and the second pin coupling holes (232A) to enable the movement of the first link part (22) and the second link part (23).

[0123] For example, the link fixing pin (242) may include a pin body that is slidably coupled to the stopper housing (241) along the axial direction of the stopper housing (241), an operating member that extends from one end of the pin body and is positioned outside the stopper housing (241), branch pins that extend from the other end of the pin body and penetrate the first pin coupling hole (222A) and the second pin coupling holes (232A), and a support member that is coupled to the pin body and elastically supported by a pin elastic support member (243).

[0124] The pin elastic support member (243) is arranged inside the stopper housing (241) and can elastically support the link fixing pin (242) toward the first link portion (22) and the second link portion (23) along the thickness direction of the link member (2).

[0125] For example, the pin elastic support member (243) can be formed in the form of a coil spring.

[0126] Fig. 7 is a perspective view showing a state in which a link member is coupled to a link bracket according to an embodiment of the present invention.

[0127] Referring to Fig. 7, the ladder slip prevention device (1000) for preventing falling accidents may further include link brackets (6).

[0128] Referring to FIGS. 3 and 7, link brackets (6) are each coupled to supports (L1), and link members (2) can be each rotatably coupled. At this time, hinge members (not shown) that penetrate the link brackets (6) and the link members (2) to support the link members (2) can be arranged on the link brackets (6).

[0129] Each link bracket (6) can be configured to support both sides of the link member (2) along the thickness direction of the link member (2). Accordingly, the link bracket (6) can stably support the link member (2) and limit movement in the thickness direction of the link member (2).

[0130] Additionally, the link brackets (6) can be configured to limit the rotation angle of the link members (2) rotated toward the front of the brace (L1).

[0131] More specifically, the link brackets (6) may each include a link support (61) on which an end of a link member (2) rotated toward the front of the brace (L1) is hung and supported.

[0132] That is, the link support (61) can serve as a stopper to prevent over-rotation of the link member (2) and distribute the load applied to the link member (2) as a support.

[0133] Referring to FIGS. 2 and 3, auxiliary stepping stones (3) are supported by being joined to the frame assembly (1) and are arranged in multiple numbers along the longitudinal direction of the frame assembly (1).

[0134] Accordingly, when the frame assembly (1) is placed in front of the supports (L1), the auxiliary steps (3) form an auxiliary stepping area in front of the steps (L2), and through this, the user can use the ladder stably while stepping on the steps (L2) and the auxiliary steps (3) together.

[0135] At this time, the spacing between the auxiliary steps (3) can be set in various ways as needed.

[0136] Accordingly, when the frame assembly (1) is placed in front of the supports (L1), the auxiliary steps (3) can be placed at the same height as the steps (L2) or at a height between the steps (L2).

[0137] Fig. 8 is a side cross-sectional view showing an auxiliary step according to an embodiment of the present invention.

[0138] Referring to FIG. 8, the auxiliary steps (3) may each include a base plate (31) that is supported by being joined to the frame assembly (1), and a step plate (32) that is integrally joined to the base plate (31) and is positioned at a preset angle with respect to one surface of the base plate (31) to support the user's feet.

[0139] At this time, depending on the position of the step plate (32) placed on one side of the base plate (31), the side cross-section of the auxiliary step (3) can be formed in a 'T' shape or an 'L' shape.

[0140] For example, the step plate (32) may be positioned at an angle of 80 degrees or more and 90 degrees or less with respect to one surface of the base plate (31). In addition, one surface of the step plate (32) on which the user's foot is supported may be formed with a rough structure to prevent slipping.

[0141] Fig. 9 is a side cross-sectional view showing a state in which an auxiliary step plate and a reinforcing plate are combined on an auxiliary step according to an embodiment of the present invention.

[0142] Referring to Fig. 9, the auxiliary steps (3) may each further include an auxiliary step plate (33) and a reinforcing plate (34).

[0143] The auxiliary step plate (33) is integrally connected to the base plate (31) and can be positioned opposite the step plate (32) along the width direction of the base plate (31).

[0144] At this time, the side cross-section of the auxiliary step (3) can be formed in a ‘ㄷ’ shape.

[0145] A reinforcing plate (34) is placed between the step plate (32) and the auxiliary step plate (33) to support the step plate (32) and the auxiliary step plate (33).

[0146] That is, the reinforcing plate (34) can support the load applied to the step plate (32) when the user steps on the step plate (32) and distribute it to the auxiliary step plate (33).

[0147] Meanwhile, the auxiliary step (3) may have a telescopic structure whose length is variable along the width direction.

[0148] Fig. 10 is a side cross-sectional view schematically illustrating a process of expanding an auxiliary step according to an embodiment of the present invention.

[0149] Referring to Fig. 10, the auxiliary step (3) can selectively expand the support area along the width direction.

[0150] The auxiliary step (3) may include a fixed part (35), an extension part (36) and step fixing members (37).

[0151] The fixed part (35) can be placed in a fixed state by being joined to the inner surface of the frame assembly (1).

[0152] The fixed part (35) has one side open along the width direction of the auxiliary step (3), and a storage groove (351) can be formed inside the fixed part (35).

[0153] Through this, entry and exit of the extension section (36) can be made possible.

[0154] The extension part (36) can be slidably connected to the inside of the fixed part (35).

[0155] Accordingly, the extension part (36) can be stored in the storage groove (351) or protrude outside the storage groove (351).

[0156] On the outer surface of the extension (36), a first engaging groove (361) and a second engaging groove (362) can be formed along the longitudinal direction to which step fixing members (37) can be detachably coupled.

[0157] At this time, anti-slip grooves (not shown) may be formed on the upper surface of the fixed portion (35) and the upper surface of the extended portion (36).

[0158] The stepping stone fixing members (37) can be arranged in multiple numbers on the fixing member (35) along the longitudinal direction of the fixing member (35).

[0159] When the expansion part (36) is stored in the storage groove (351), the step fixing members (37) can be caught in the first catch groove (361) and the second catch groove (362) to fix the expansion part (36), and when the expansion part (36) protrudes out of the storage groove (351), the step fixing members (37) can be caught in the first catch groove (361) to fix the expansion part (36).

[0160] For example, the stepping stone fixture (37) may include a catch that is positioned inside the fixing member (35) and has a portion protruding outside the fixing member (35), and an elastic member that is accommodated inside the fixing member (35) and elastically supports the catch.

[0161] Fig. 11 is a side cross-sectional view schematically showing a state in which an elastic fixing member according to an embodiment of the present invention is coupled to a step.

[0162] Referring to Fig. 11, the ladder slip prevention device (1000) for preventing falling accidents may further include elastic fixing members (4).

[0163] Elastic fixing members (4) are connected to the side frame (13) and can be arranged on one side and the other side of each step receiving groove (131) along the longitudinal direction of the side frame (13).

[0164] The elastic fixing members (4) can fix the frame assembly (1) to the ladder (L) by compressing the upper and lower surfaces of the step (L2) accommodated in the step accommodation groove (131) when the frame assembly (1) is folded.

[0165] Specifically, each elastic fixture (4) may include a hinge pin (41) coupled to a side frame (13), and a pressure roller (42) made of an elastic material that is rotatably coupled to the hinge pin (41) and presses the step (L2) by elastic force while being compressed by being pressed against the step (L2) when the step (L2) is received in the step receiving groove (131).

[0166] Fig. 12 is a schematic drawing of a cover lifting unit according to an embodiment of the present invention.

[0167] Referring to Fig. 12, the ladder slip prevention device (1000) for preventing falling accidents may further include cover lifting units (5).

[0168] The cover lifting units (5) can be configured to be connected to a support member (L1) to support a link member (2) and to move along the longitudinal direction of the support member (L1) to elevate the link member (2) and the frame assembly (1) connected to the link member (2).

[0169] Specifically, each cover lifting unit (5) may include support units (51) that are coupled to a support (L1) and spaced apart from each other along the longitudinal direction of the support (L1), a screw shaft (52) that is rotatably coupled to the support units (51), a shaft drive motor (53) that is coupled to the screw shaft (52) and rotates the screw shaft (52), and a transfer nut (54) that is coupled to the shaft drive motor (53) and supports the link member (2), and moves along the outer surface of the screw shaft (52) when the screw shaft (52) rotates to elevate the link member (2).

[0170] In this way, according to an embodiment of the present invention, when the frame assembly (1) is placed in front of the supports (L1), the auxiliary steps (3) form an auxiliary stepping area in front of the steps (L2), so that the user can use the ladder stably while stepping on the steps (L2) and the auxiliary steps (3) together.

[0171] In addition, since a slip-prevention plate (11) is attached to the opening of the frame assembly (1), safety accidents due to slipping when using the ladder (L) can be prevented.

[0172] In addition, air flow holes (111) are formed in the anti-slip plate (11) coupled to the opening of the frame assembly (1), thereby minimizing wind resistance and preventing the ladder (L) from shaking due to wind resistance applied to the anti-slip cover (1).

[0173] In addition, the frame assembly (1) can be selectively folded or unfolded through the link members (2), making storage easy.

[0174] In addition, since the link member (2) is configured to be adjustable in length, the gap between the frame assembly (1) and the ladder (L) can be adjusted to suit the user's convenience, thereby improving the convenience of the worker.

[0175] In addition, since the auxiliary step (3) is formed with a telescopic structure, the stepping area can be expanded to secure a sufficient stepping surface, thereby improving safety.

[0176] In addition, since the position of the frame assembly (1) can be varied in the longitudinal direction of the ladder (L) through the cover lifting units (5), the positions of the auxiliary step (3) and the anti-slip plate (11) can be varied in response to the position of the worker.

[0177] In the above, an embodiment of a ladder slip prevention device (1000) according to an embodiment of the present invention has been described in which the device can be folded or unfolded on a ladder (L), and in the following, an embodiment of a ladder slip prevention device (1000) according to an embodiment of the present invention will be described in which the device can be attached or detached on a ladder (L).

[0178] To this end, the ladder slip prevention device (1000) according to the embodiment of the present invention further includes a detachable coupling part (7) in which another part of the link members (2) is rotatably coupled to the link brackets (6), and the link brackets (6) are detachably coupled to the supports (L1).

[0179] In an embodiment of the present invention, the detachable coupling part (7) includes a moving bar (71), a moving bar fixing means (72), and an insertion groove (73).

[0180] The moving bar (71) is configured such that a portion of it is movably or rotatablely connected to the link bracket (6).

[0181] The moving bar fixing means (72) is configured to fix and release another part of the moving bar (71) to the link bracket (6).

[0182] The insertion groove (73) is a configuration formed by being dug into the link bracket (6) or the moving bar (71) so that a step (L2) can be inserted between the link bracket (6) and the moving bar (71) while another part of the moving bar (71) is fixed to the link bracket (6).

[0183] It is preferable that the above insertion groove (73) be formed in a shape corresponding to the cross-sectional shape of the step (L2) for stable bonding.

[0184] FIG. 13 is a perspective view showing a state in which a ladder slip prevention device having a detachable coupling portion according to a first embodiment of the present invention is installed on a ladder, FIG. 14 is a perspective view schematically showing an operation for attaching and detaching a ladder slip prevention device having a detachable coupling portion according to a first embodiment of the present invention, and FIG. 15 is a perspective view of main parts showing a state in which a ladder slip prevention device having a detachable coupling portion according to a first embodiment of the present invention is installed on a ladder.

[0185] Referring to FIGS. 13 to 15, the moving bar (71) according to the first embodiment of the present invention has a long hole (711) formed in a portion thereof and is connected to the link bracket (6) so as to be movable and rotatably connected.

[0186] The moving bar fixing means (72) according to the first embodiment of the present invention includes a catch (721) protruding from another part of the moving bar (71) and a catch groove (722) formed in a shape that allows the catch (721) to be caught after being inserted into the link bracket (6).

[0187] The insertion groove (73) according to the first embodiment of the present invention is formed by digging a link bracket (6) and has a structure that is opened and closed by a moving bar (71).

[0188] That is, the detachable coupling part (7) according to the first embodiment of the present invention has an organic coupling relationship between the long hole (711) formed in the moving bar (71) and the latch (721) and latch groove (722) as the moving bar fixing means (72), thereby enabling the falling prevention device (1000) for preventing a fall accident according to the embodiment of the present invention to be detachably coupled to the ladder (L) as needed in a relatively simple manner.

[0189] Fig. 16 is a perspective view of the main parts of a ladder slip prevention device having a detachable coupling portion according to the second embodiment of the present invention.

[0190] The second embodiment of the present invention is different from the first embodiment illustrated in FIGS. 13 to 15 only in the shape of the link bracket (6) to which the detachable coupling portion (7) is connected, and the remaining configuration is the same, so only the link bracket (6) will be described below.

[0191] The link bracket (6) according to the second embodiment of the present invention is formed as a pair corresponding to each other as shown in FIG. 16, and another part of the link member (2) and the moving bar (71) are positioned inside thereof, and a latch groove (722) as a moving bar fixing means (72) is formed.

[0192] By the structure of the second embodiment as described above, the moving bar (71) that moves and rotates is positioned inside a pair of link brackets (6) and is not exposed to the outside, thereby preventing the failure of the detachable joint (7), and the safety of the worker can be ensured when attaching and detaching the ladder (L) of the fall prevention device (1000) for preventing falling accidents according to the embodiment of the present invention.

[0193] FIG. 17 is a perspective view schematically showing an operation for attaching and detaching a ladder slip prevention device having a detachable coupling portion according to a third embodiment of the present invention, and FIG. 18 is a perspective view of the main parts showing a state in which a ladder slip prevention device having a detachable coupling portion according to a third embodiment of the present invention is installed on a ladder.

[0194] Referring to FIGS. 17 and 18, a moving bar (71) according to a third embodiment of the present invention has a portion rotatably connected to the link bracket (6) by a hinge (712), and a hook portion (713) extended to a certain length is formed on another portion.

[0195] The insertion groove (73) according to the third embodiment of the present invention, unlike the first and second embodiments, is formed by a combination of the link bracket (6) and the moving bar (71) and has a structure that is opened and closed by the rotation of the moving bar (71).

[0196] In addition, the moving bar fixing means (72) according to the third embodiment of the present invention includes a base portion (723), a hook portion (724), and a pressing fixing portion (725).

[0197] The base part (723) is configured to be fixed to one side of the link bracket (6).

[0198] The hook part (724) is configured such that one end is formed in a ring shape, the other end is hinge-connected to the base part (723) and rotates, and one end can be hung on the hook part (713).

[0199] The pressing fixing member (725) is hinge-connected to the base member (723) by a hinge axis and rotates, but the other end of the hook member (724) is connected eccentrically to the hinge axis so that the hook member (724) is pulled and fixed by an external force while one end of the hook member (724) is hooked to the hook member (713).

[0200] By means of the structure of the third embodiment as described above, the moving bar (71) is more securely fixed in a so-called cicada ring shape by the moving bar fixing means (72), so that the falling prevention device (1000) for preventing falling accidents according to the embodiment of the present invention can be easily attached to and detached from the ladder (L), and the combined state can be more stably maintained, thereby ensuring the safety of the worker when working on the ladder.

[0201] Although the embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be implemented without departing from the technical spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain it, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all aspects and not restrictive. The protection scope of the present invention should be interpreted by the claims below, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

[0202] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims described below.

Claims

1. A ladder slip prevention device for preventing falling accidents, installed on a ladder including braces that are supported on the ground and spaced apart from each other, and stepping boards that are arranged in multiple numbers along the length direction of the braces between the braces, A frame assembly arranged parallel to the above supports; Link members arranged in a plurality along the longitudinal direction of the above supports or the frame assembly, a portion of which is rotatably connected to the frame assembly; A ladder slip prevention device for preventing falling accidents, comprising: auxiliary stepping stones which are supported by being joined to the frame assembly and arranged in a plurality along the length of the frame assembly; 2. In paragraph 1, The above frame assembly, Stored between the above braces or protruding outwardly from the above braces and placed in front of the above braces, The above link absences are respectively, Another portion is rotatably coupled to said frame assembly, said frame assembly being positioned between said braces or in front of said braces, The above frame assembly, Reinforcing frames respectively positioned at the top and bottom of the above frame assembly; and including side frames, each of which is connected to the left and right ends of the reinforcing frames and is rotatably connected to the link members; The above side frames are each, A ladder slip-prevention device for preventing falls, comprising step-receiving grooves for accommodating the steps when stored between the above supports.

3. In paragraph 2, The above frame assembly, Further comprising an anti-slip plate coupled to the reinforcing frames and the side frames to shield the open front of the frame assembly; The above anti-slip plate is, An anti-fall device for a ladder to prevent falls, comprising airflow holes through which wind can pass.

4. In paragraph 2, The above ladder slip prevention device is, Further comprising link brackets, each of which is connected to the above supports and each of which link members are rotatably connected; A ladder slip prevention device for preventing falling accidents, wherein the above link brackets are configured to limit the rotation angle of the link members rotated toward the front of the above support.

5. In paragraph 4, The above link brackets are respectively, A ladder slip prevention device for preventing falling accidents, comprising: a link support member on which an end of the link member rotated toward the front of the support member is hung and supported; 6. In paragraph 1, The above auxiliary steps are each, a base plate joined to and supported by the above frame assembly; and A ladder slip prevention device for preventing falling accidents, comprising: a step plate integrally connected to the base plate and positioned at a preset angle with respect to one surface of the base plate.

7. In paragraph 6, The above auxiliary steps are each, A ladder slip prevention device for preventing falling accidents, further comprising: an auxiliary step plate integrally connected to the base plate and positioned opposite the step plate along the width direction of the base plate.

8. In paragraph 7, The above auxiliary steps are each, A ladder slip prevention device for preventing falling accidents, further comprising a reinforcing plate disposed between the step plate and the auxiliary step plate to support the step plate and the auxiliary step plate.

9. In paragraph 1, The above ladder slip prevention device is, Link brackets in which different parts of the above link members are each rotatably connected; and A ladder slip prevention device for preventing falling accidents, further comprising a detachable coupling part for detachably connecting the above link brackets to the above supports, respectively.

10. In paragraph 9, The above detachable joint is, A movable bar having a portion movable or rotatablely connected to the above link bracket; A moving bar fixing means for fixing and releasing another part of the moving bar to the link bracket; and A ladder slip-prevention device for preventing falling accidents, comprising an insertion groove formed by being dug into the link bracket or the moving bar so that the brace can be inserted between the link bracket and the moving bar while another part of the moving bar is fixed to the link bracket.

11. In paragraph 10, The above moving bar is, A hole is formed in a part and is movably and rotatably connected to the link bracket, The above moving bar fixing means is, A latch formed protruding on another part of the above moving bar; and A ladder slip prevention device for preventing falling accidents, comprising a latch groove formed in a shape in which the latch can be caught after being inserted into the link bracket.

12. In paragraph 11, The above link bracket is, A ladder slip prevention device for preventing falling accidents, which is formed as a pair corresponding to each other, and in which another part of the link member and the moving bar are positioned and the latch groove is formed.

13. In paragraph 10, The above moving bar is, A portion is rotatably hinged to the link bracket, and a hanging portion extended to a certain length is formed on another portion. The above moving bar fixing means is, A base portion fixed to one side of the above link bracket; A hook part having one end formed in a ring shape, the other end being hinge-connected to the base part and rotatable, and one end being capable of being hung on the hook part; and A ladder slip-prevention device for preventing falling accidents, comprising: a pressing fixing part that is hinge-connected to the base part by a hinge axis and rotates, and has one end of the hook part connected eccentrically to the hinge axis so as to pull and fix the hook part by an external force while one end of the hook part is caught on the hook part;

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