Expandable aerial work platform

Abstract

The present invention relates to an expandable aerial work platform and, more specifically, to an expandable aerial work platform which is formed by rack columns having rack structures to be easily expanded, and is stably supported on the ground to enable several workers to simultaneously perform aerial works, thereby providing advantageous effects such as improved project handling, shortened construction periods, and reduced costs.

Description

Expandable aerial work platform

[0001] The present invention relates to an expandable aerial work platform, and more particularly, to an expandable aerial work platform formed with a rack column having a rack structure, which is easily expandable and stably supported on the ground so that multiple workers can perform upper work simultaneously, thereby improving construction methods, shortening construction periods, and reducing costs.

[0002] In general, scaffolds are installed inside or outside a building to safely and efficiently perform work at high elevations during construction or maintenance work.

[0003] These aerial work platforms are also called scaffolding structures, and these scaffolding structures include a plurality of vertical scaffolding poles, horizontal scaffolding poles positioned horizontally to the vertical scaffolding poles, connecting means connecting the vertical scaffolding poles to the horizontal scaffolding poles, and platforms spanning the horizontal scaffolding poles. When installing a scaffolding structure, the vertical scaffolding poles are arranged at set intervals, and then horizontal scaffolding poles are arranged on the vertical scaffolding poles, and the vertical scaffolding poles and horizontal scaffolding poles are connected to each other with connecting means, and then the platforms are placed on the horizontal scaffolding poles. When dismantling the scaffolding, the platforms are separated, and then the connecting means are released, thereby separating the horizontal scaffolding poles from the vertical scaffolding poles.

[0004] Korean Patent Publication No. 10-2006-0102832 (published on September 28, 2006) (hereinafter referred to as “prior art 1”) discloses a scaffolding device used in the manufacture of tanks and pressure vessels for ships. Prior art 1 discloses two vertical structures positioned at intervals from each other, an upper horizontal structure connecting the upper portions of the two vertical structures, and a middle horizontal structure connecting the middle portions of the two vertical structures, which makes it convenient for processing curved surfaces such as pressure vessels, but has the disadvantage that it is not suitable for installation and work around column-shaped vertical structures such as aircraft wheels and landing gear.

[0005] Korean Patent Publication No. 10-2007-0111597 (published on November 22, 2007) (hereinafter referred to as "prior art 2") discloses a scaffolding for construction. Prior art 2 discloses a vertical structure and platforms positioned horizontally on top of the vertical structure, which is convenient for working on the walls of a building. However, it has the disadvantage of being unsuitable for installation and working around vertical structures in the form of columns, such as aircraft wheels and landing gear.

[0006] In addition, there is a growing need for aerial work platforms that can be transformed into various forms depending on the purpose of the work, but conventional scaffolding structures have a disadvantage in that their use is limited because they are formed in a structure that cannot expand in length.

[0007] The present invention provides an aerial work platform formed in a rack structure so that it can be easily combined in the longitudinal direction, thereby enabling the aerial work platform to be used for various purposes through extension of the length.

[0008] The present invention has been devised to solve the above-mentioned problems, and the purpose of the present invention is to provide an expandable aerial work platform that can be easily assembled into a required size according to the work environment and purpose using a rack method, thereby reducing assembly time and improving convenience.

[0009] Another object of the present invention is to provide an expandable aerial work platform that can adjust the working height and extend to both sides and front and rear to secure a wide working space, thereby enabling efficient work to be performed while passing through a wide working range according to the working environment and purpose.

[0010] Another object of the present invention is to provide an expandable aerial work platform that is easy to assemble and disassemble each structure, making it easy to move and store.

[0011] Another object of the present invention is to provide an expandable aerial work platform that can stably support and prevent shaking and twisting due to external impact and vibration, stably support high loads, and stably install without being greatly affected by ground conditions.

[0012] In order to achieve the above-described object, the present invention comprises: a rack column having a 'ㄷ' cross-sectional shape with an open inner side, having first fixing grooves formed along the longitudinal direction on three sides, and arranged vertically so that the inner sides face each other in the front and rear directions; a support frame formed of a plurality of horizontal members whose both ends are joined to the rack column so as to interconnect the rack columns; a plurality of reinforcing frames installed along the longitudinal direction of the support frame, the support frames being arranged at a predetermined interval on both sides, and having first fixing members formed at both ends to be joined to the first fixing grooves, the reinforcing frames being arranged horizontally between the support frames; a support plate installed on a footing frame coupled to the inner side of the reinforcing frame and the horizontal member positioned above the support frame; a protective frame disposed on the upper end of the support plate, and having second fixing members formed at both ends to be joined to the first fixing grooves; a handle part installed vertically on the outside of the support frame; It is characterized by being formed of an outrigger that is coupled to the first fixing groove at the bottom of the above support frame and supports the above support frame.

[0013] It is preferable that a connecting plate is formed on the open inner surface of the above rack column, which protrudes in accordance with the width of the horizontal member and has a plurality of first fastening holes formed along the length direction, and second fastening holes corresponding to the first fastening holes are formed at both ends of the horizontal member so that a fastening means can be fastened.

[0014] It is preferable that the rack column further includes an extension member that is inserted into the end of the rack column and has a second fixing groove corresponding to the first fixing groove and a third fixing hole corresponding to the first fastening hole, and extends the rack column vertically.

[0015] It is preferable that the reinforcing frame further includes a fixing plate that extends from both ends of the reinforcing frame and is in close contact with the rack column, and has the first fixing member formed on the inner surface.

[0016] The above outrigger is preferably formed of a pair of coupling brackets spaced apart from each other in the vertical direction at a predetermined interval, with a third fixing member coupled to the first fixing groove on the inner surface and a first coupling plate protruding on the outer surface, which are in close contact with the outer surface of the support frame, a rotary bar having both ends rotatably coupled to the first coupling plate between the coupling brackets, a connecting frame formed by reinforcing bars protruding forward and downward from the upper and lower ends of the rotary bar, and a stopper portion coupled to the lower end of a vertically formed support bar formed at the end of the connecting frame and supporting the ground.

[0017] The above outrigger preferably comprises a vertical bar shape so as to be in close contact with the outer surface of the support frame, a third fixing member formed on the inner surface to be coupled to the first fixing groove, a coupling bracket having an insertion groove formed on the outer surface with a fastening protrusion provided along the longitudinal direction, a fixing bracket that is in close contact with the inner side of the insertion groove and is coupled to the fastening protrusion and has a second coupling plate formed on the outer surface, a connecting frame having one side rotatably coupled to the second coupling plate and the other side arranged to face the ground, an adjusting member installed at the lower end of the fixing bracket to adjust the angle of the connecting frame, and a stopper part formed at the lower end of the connecting frame to support the ground.

[0018] It is preferable that the support frame and the support frame be in close contact with each other, and that the fastening plate has a joining groove formed on one side corresponding to the first fixing groove and a horizontal groove formed on the other side corresponding to the first fixing groove, and a fastening member that fastens the fastening plate to the support frame.

[0019] According to the expandable aerial work platform of the present invention, the support frame, the reinforcing frame, the support plate, and the protective frame can be easily assembled into a required size according to the work environment and purpose by using a rack method in which they are mutually fitted together, thereby reducing the assembly time and improving convenience.

[0020] According to the present invention, the support plate can be selectively installed at any position along the length of the support frame to adjust the working height, and can be extended to both sides and front and rear of the support frame to secure a wide working space, thereby enabling efficient work to be performed while passing through a wide working range according to the working environment and purpose.

[0021] According to the present invention, there is an advantage in that each structure can be easily assembled and disassembled through a rack-type fitting method, thereby facilitating movement and storage.

[0022] According to the present invention, the support frame can be prevented from shaking or twisting due to external impact and vibration through the outrigger, can stably support a high load, and can be stably installed without being greatly affected by the ground condition.

[0023] According to the present invention, the length of the safety fence can be adjusted to various specifications of the support frame, allowing for convenient attachment and detachment, thereby ensuring the safety of workers in accordance with industrial safety and health standards.

[0024] Figure 1 is a perspective view showing an expandable aerial work platform according to the present invention;

[0025] Figure 2 is an exploded perspective view showing a support frame and a reinforcing frame according to the present invention.

[0026] Figure 3 is an exploded perspective view showing a support plate and a protective frame according to the present invention.

[0027] Figure 4 is a conceptual diagram illustrating an example of an outrigger according to the present invention.

[0028] Figure 5 is a conceptual diagram illustrating another example of an outrigger according to the present invention.

[0029] Figure 6 is a side view showing a safety fence according to the present invention.

[0030] Figure 7 is a conceptual diagram illustrating a serial connection state according to the present invention.

[0031] Figure 8 is a conceptual diagram illustrating a parallel connection state according to the present invention.

[0032] Figure 9 is a conceptual diagram illustrating a mixed serial and parallel connection state according to the present invention.

[0033] Hereinafter, an expandable aerial work platform according to the present invention will be described in detail with reference to the attached drawings.

[0034] FIG. 1 is a perspective view showing an expandable aerial work platform according to the present invention, FIG. 2 is an exploded perspective view showing a support frame and a reinforcing frame according to the present invention, FIG. 3 is an exploded perspective view showing a support plate and a protective frame according to the present invention, FIG. 4 is a conceptual view showing an example of an outrigger according to the present invention, FIG. 5 is a conceptual view showing another example of an outrigger according to the present invention, FIG. 6 is a side view showing a safety fence according to the present invention, FIG. 7 is a conceptual view showing a series connection state according to the present invention, FIG. 8 is a conceptual view showing a parallel connection state according to the present invention, and FIG. 9 is a conceptual view showing a mixed series and parallel connection state according to the present invention.

[0035] As illustrated in FIGS. 1 to 9, the present invention relates to an expandable aerial work platform, and more specifically, to an expandable aerial work platform formed with a rack pillar having a rack structure, which is easy to expand and stably supported on the ground so that multiple workers can perform upper work simultaneously, thereby improving construction methods, shortening construction periods, and reducing costs.

[0036] To this end, the present invention is configured with a support frame (100), a reinforcing frame (200), a support plate (300), a protection frame (400), a handle (500), and an outrigger (600) so that it can be easily assembled and disassembled to allow height adjustment and space expansion according to the usage environment and purpose, and can be fixed to the ground to secure a stable working space.

[0037] The above support frame (100) has a 'ㄷ' cross-sectional shape with an open inner side, and is formed with a first fixing groove (111) formed along the longitudinal direction on three sides, and is composed of a rack column (110) arranged vertically so that the inner sides face each other in the front and rear directions, and a plurality of horizontal members (120) whose ends on both sides are joined to the rack column (110) so as to interconnect the rack column (110).

[0038] The above reinforcing frame (200) is arranged at a constant interval on both sides of the support frame (100), and is horizontally arranged between the support frames (100) and has a first fixing member (210) formed at both ends to be coupled to the first fixing groove (111), and is installed in multiple numbers along the length direction of the support frame (100).

[0039] The above support plate (300) is installed on the horizontal member (120) located on the upper portion of the support frame (100) and the footing frame (310) coupled to the inner surface of the reinforcing frame (200).

[0040] The above protective frame (400) is placed on the upper side of the support plate (300), and a second fixing member (410) coupled to the first fixing groove (111) is formed at both ends.

[0041] The above handle part (500) is installed vertically on the outside of the support frame (100).

[0042] The above outrigger (600) is coupled to the first fixing groove (111) at the bottom of the support frame (100) to support the support frame (100).

[0043] In this way, the present invention can be easily assembled to allow expansion according to the use and environment through the support frame (100) and the reinforcing frame (200), and the support plate (300) can be installed at various locations of the support frame (100) to adjust the height.

[0044] In addition, the protective frame (400) and the handle (500) allow the worker to move conveniently and secure a safe space to prevent falling accidents.

[0045] And the above outrigger (600) can be conveniently connected to the support frame (100) to stably support the support frame (100) and prevent twisting, vibration, shaking, etc., thereby creating a stable working environment.

[0046]

[0047] If we look at each component in detail, it is as follows.

[0048] First, the support frame (100) is composed of the rack columns (110) arranged on both sides, and the horizontal member (120) connecting the rack columns (110) to each other.

[0049] Here, the above rack column (110) has a 'ㄷ' cross-sectional shape with one side open, and is formed as a frame structure in which a plurality of first fixing grooves (111) are formed along the longitudinal direction on both sides and the outer surface.

[0050] At this time, a plurality of first fixing grooves (111) are formed in the longitudinal direction on both sides of the outer surface of the rack column (110).

[0051] Here, the first fixed groove (111) is formed in a diamond shape with a lower width narrower than the upper width, so that the reinforcing frame (200), the protective frame (400), and the outrigger (600) can be stably fastened when a load is applied by fastening them from the upper side.

[0052] And, on the open inner surface of the above rack column (110), a connecting plate (112) is formed that protrudes in accordance with the width of the above horizontal member (120) and has a plurality of first fastening holes (113) provided along the length direction.

[0053] Here, the connecting plate (112) is formed on the open inner surface of the rack column (110), and is formed so that the horizontal member (120) can be inserted.

[0054] These above rack columns (110) are spaced apart at regular intervals so that their inner surfaces face each other and are formed as a pair on both sides.

[0055] And, the horizontal member (120) is formed with a second fastening hole (121) corresponding to the first fastening hole (113) so that a fastening means (122) is fastened to both ends of the horizontal member (120).

[0056] Accordingly, the horizontal member (120) is inserted into the connecting plate (112) at both ends, and a plurality of horizontal members (120) are arranged along the length direction of the rack column (110) so that the first fastening hole (113) and the second fastening hole (121) are positioned on the same line.

[0057] At this time, pins, bolts, nuts, etc. are fastened to the first fastening hole (113) and the second fastening hole (121) to secure them firmly.

[0058] Through this, the above support frame (100) is formed by connecting the rack columns (110) arranged in front and rear through the horizontal member (120), and multiple support frames (100) can be arranged on both sides.

[0059] Here, the horizontal members (120) are preferably combined in multiple pieces to firmly support the rack column (110) and are arranged at intervals where a worker can step on them when going up and down, to enable smooth movement.

[0060] And it is preferable that wheels be formed at the bottom of the above rack pillar (110) to enable convenient movement.

[0061]

[0062] Next, the above reinforcing frame (200) connects the above support frame (100) placed on both sides to the above support frame (100).

[0063] Accordingly, the reinforcing frame (200) is horizontally arranged to match the spacing between the support frame (100) and the support frame (100), and a first fixing member (210) that is fastened to the first fixing groove (111) is formed at both ends.

[0064] Here, a fixing plate (220) is further included, which extends from both ends of the reinforcing frame (200) and is in close contact with the rack column (110), and has the first fixing member (210) formed on the inner surface.

[0065] At this time, the mounting plate (220) is formed in an “ㄱ” shape that is in close contact with the side and part of the outer surface of the rack column (110).

[0066] And the first fixing member (210) is formed in a protruding ring shape so that it can be seated in the first fixing groove (111).

[0067] The above reinforcing frame (200) can be conveniently installed by lowering the mounting plate (220) after it is placed horizontally between the rack columns (110) so that the first fixing member (210) is inserted into the first fixing groove (111) and then pressed against the rack column (110).

[0068] Accordingly, the reinforcing frame (200) is coupled to both sides of the rack column (110) to stably couple the support frame (100) to the support frame (100).

[0069] At this time, the reinforcing frame (200) is arranged in multiple numbers along the length direction of the support frame (100) to enable firm fixation.

[0070] Through this, the support frame (100) is spaced apart on both sides and is joined to the reinforcing frame (200) to form a space inside.

[0071] And, the rack column (110) is inserted into the end thereof, and a second fixing groove (131) corresponding to the first fixing groove (111) and a third fixing hole (132) corresponding to the first fastening hole (113) are formed, and the rack column (110) and an extension member (130) that vertically extends the rack column (110) are further included.

[0072] The above extension member (130) can extend the rack column (110) in the longitudinal direction to increase the height.

[0073] At this time, the extension member (130) is formed to have the same cross-sectional shape as the rack column (110) and the connecting plate (112) so as to be inserted into the interior of the rack column (110), and a plurality of second fixing grooves (131) and third fastening holes (132) are formed along the longitudinal direction, and may be formed as one or more.

[0074] Accordingly, the upper and lower ends of the extension member (130) are each inserted into the extended rack column (110), and then fastened to the first fixing groove (111), the second fixing groove (131), the first fastening hole (113), and the third fastening hole (132) using bolts, pins, etc.

[0075] Through this, the support frame (100) can be extended in the longitudinal direction through the extension member (130), so that the height can be adjusted according to the work purpose.

[0076]

[0077] Next, the support plate (300) is installed on the horizontal member (120) located on the upper portion of the support frame (100) and the footing frame (310) coupled to the inner surface of the reinforcing frame (200).

[0078] The above-mentioned footing frame (310) is formed by connecting a plurality of frames to the horizontal member (120) and the reinforcing frame (200) to form a frame capable of supporting a load.

[0079] At this time, the footrest frame (310) is installed at any point of the support frame (100) according to the work purpose, and the height is adjusted.

[0080] And the above support plate (300) is mounted on the foot frame (310) so that the worker can move.

[0081] Through this, the support plate (300) is firmly installed at the required height on the support frame (100) and the reinforcing frame (200), thereby forming a wide floor surface for workers to operate on.

[0082]

[0083] Next, the protective frame (400) is configured to be positioned at the upper end where the support plate (300) is installed by connecting the second fixing member (410) protruding at both ends to the first fixing groove (111).

[0084] Here, the protective frame (400) has the same structure as the reinforcing frame (200) and is installed to prevent a worker from falling while working on the support plate (300).

[0085] In addition, it is preferable that the horizontal member (120) be installed together with the position of the protective frame (400) to form a railing to prevent falling accidents.

[0086]

[0087] Next, the handle portion (500) is installed on both sides of the horizontal member (120) along the longitudinal direction of the rack column (110).

[0088] That is, the handle part (500) is designed to enable the worker to hold it stably when going up and down the horizontal member (120) to prevent accidents.

[0089]

[0090] In addition, a safety fence (510) is further included to prevent falling accidents when a worker goes up and down by being attached to the handle (500).

[0091] The safety fence (510) is arranged in accordance with the handle portions (500) located on both sides so that the length can be adjusted along the longitudinal direction, and is composed of a connecting bar (520) having a movable rail (521) and first connecting members (522) formed at regular intervals along the longitudinal direction on the outer surface, a safety unit (530) that is vertically foldable in a “U” shape and movably connected to the movable rails (521) of the connecting bars (520) located on both sides so as to expand and contract in accordance with the length adjustment of the connecting bar (520), and a connecting unit (540) in which a plurality of second connecting members (541) are connected in accordance with the safety unit (530) and a third connecting member (542) is connected to the handle portion (500).

[0092] Here, the above-mentioned connecting bar (520) is composed of a cylindrical outer bar (523) and an inner bar (524) that is inserted into the outer bar (523) in a sliding manner and has an adjustable length.

[0093] At this time, the moving rail (521) is formed along the longitudinal direction on the outer peripheral surface of the outer bar (523) and the inner bar (524) so ​​that the connecting bar (520) can move.

[0094] And the first connecting member (522) is formed adjacent to the handle portion (500) at a position where interference does not occur with the moving rail (521).

[0095] At this time, it is preferable that the first connecting member (522) has a protrusion shape on the outer bar (523) and a groove shape on the inner bar (524) so ​​that interference does not occur during sliding movement of the outer bar (523) and the inner bar (524).

[0096] And the above safety unit (530) is formed with a foldable “U” shaped safety bar (531) to prevent the worker from falling.

[0097] That is, the safety bar (531) has a “U” shape, and is connected so that the open end can move along the movable rails (521) located on both sides, and when viewed from the side, multiple ones are connected to cross in an “X” shape so that they can move and expand and contract in accordance with the length adjustment of the connecting bar (520).

[0098] Here, the safety unit (530) is fixed to both ends of the moving rail (521) with the safety bar (531) located at the top.

[0099] And the above connecting unit (540) is formed with the second connecting member (541) that is engaged with the groove and protrusion shape of the first connecting member (522) on one side and the third connecting member (542) that is connected with the handle part (500) on the other side.

[0100] At this time, the second connecting member (541) is interlocked and connected with the first connecting member (522), and the third connecting member (542) is connected to the handle portion (500).

[0101] For example, the second and third connecting members (541, 542) have a “ㄷ” shape that surrounds the safety bar (531) and the handle portion (500), and a bolt is fastened to pressurize and fix the safety bar (531) and the handle portion (500).

[0102] In this way, the second and third connecting members (541, 542) are firmly fixed to the handle part (500) through various connecting methods such as fitting, pressing, bolts, and pins.

[0103] Accordingly, the safety fence (510) is configured such that the safety unit (530) is coupled to the connecting bar (520), and the safety unit (530) expands and contracts in accordance with the longitudinal movement of the connecting bar (520) to prevent a worker from falling.

[0104] And, through the above-mentioned connection unit (540), the above-mentioned connection bar (520) can be firmly fixed to the above-mentioned handle part (500), so that the above-mentioned safety fence (510) can be used selectively through a detachable method considering the standard, purpose, etc.

[0105]

[0106] Next, the above outrigger (600) is installed at the bottom of the support frame (100) to stably support the support frame (100) to prevent shaking or impact due to external force and to fix the position.

[0107] Therefore, the above outrigger (600) is configured to be capable of being positioned up and down and rotated up and down, or rotated left and right.

[0108] As an example of the above outrigger (600), it is composed of a coupling bracket (610), a connecting frame (620), and a stopper part (630).

[0109] The above-mentioned coupling bracket (610) is closely attached to the outer surface of the above-mentioned support frame (100), and a third fixing member (611) coupled to the first fixing groove (111) is formed on the inner surface, and a first coupling plate (612) protruding on the outer surface is formed, and they are arranged as a pair at a certain distance from each other in the vertical direction.

[0110] That is, the above-mentioned coupling bracket (610) is formed with the third fixing member (611) inside the “ㄱ” shaped plate and the first coupling plate (612) outside.

[0111] At this time, it is preferable that the above-mentioned coupling bracket (610) and the third fixing member (611) have the same structure as the above-mentioned mounting plate (220) and the above-mentioned first fixing member (210).

[0112] These above-mentioned coupling brackets (610) are fastened as a pair, upper and lower, along the longitudinal direction of the above-mentioned support frame (100).

[0113] The above connecting frame (620) is formed by a rotating bar (621) whose both ends are rotatably connected to the first connecting plate (612) between the connecting brackets (610), and a reinforcing bar (622) protruding forward and downward from the upper and lower ends of the rotating bar (621), respectively.

[0114] Accordingly, the above-mentioned rotating bar (621) and the above-mentioned reinforcing bar (622) are arranged in a triangular shape, and the above-mentioned rotating bar (621) is arranged vertically between the first connecting plate (612), and both ends are rotatably connected to the first connecting plate (612).

[0115] The above stopper part (630) is connected to the lower end of a vertically formed support bar (631) formed at the end of the connecting frame (620) and supports the ground.

[0116] That is, the support bar (631) is placed vertically at the end of the reinforcing bar (622), and the stopper part (630) is formed on the lower surface.

[0117] At this time, the stopper part (630) is configured in a rear-lock manner so that the floor plate can be easily raised and lowered through lever operation to ensure that it can be placed in close contact with and moved on a stable ground.

[0118] And as another example of the above outrigger (600), it is composed of a coupling bracket (610), a fixed bracket (640), a connecting frame (620), an adjusting member (660), and a stopper part (630).

[0119] The above-mentioned coupling bracket (610) has a vertical bar shape so as to be in close contact with the outer surface of the support frame (100), and a third fixing member (611) coupled to the first fixing groove (111) is formed on the inner surface, and an insertion groove (613) having a fastening protrusion (614) provided along the longitudinal direction is formed on the outer surface.

[0120] That is, the above-mentioned coupling bracket (610) is arranged vertically according to the width of the above-mentioned rack column (110), and the third fixing member (611) is formed on the inner surface and is coupled to the above-mentioned first fixing groove (111).

[0121] And, on the outer surface of the above-mentioned coupling bracket (610), the above-mentioned insertion groove (613) is formed along the longitudinal direction, and a plurality of the above-mentioned fastening protrusions (614) are formed at regular intervals inside the above-mentioned insertion groove (613).

[0122] The above fixed bracket (640) is attached to the inner side of the insertion groove (613) and is coupled to the fastening projection (614), and a second coupling plate (641) is formed on the outer surface.

[0123] The above-mentioned fixed bracket (640) is formed with grooves or projections that engage with the fastening projections on the upper and lower ends of the plate that can be inserted into the inner side of the insertion groove (613), and is positionally adjusted and connected to the insertion groove (613).

[0124] And the second connecting plate (641) is exposed to the front of the fixed bracket (640), and is formed on both sides so that the connecting frame (620) is inserted between them.

[0125] The above connecting frame (620) is rotatably connected to the second connecting plate (641) on one side and is positioned so that the other side faces the ground.

[0126] Accordingly, one side of the above connecting frame (620) is inserted between the second connecting plates (641) and is connected so as to be rotatable up and down through an axial connection.

[0127] The above adjustment member (660) is installed at the bottom of the fixed bracket (640) and adjusts the angle of the connecting frame (620).

[0128] That is, one side of the above-mentioned adjusting member (660) is connected to the lower end of the above-mentioned fixed bracket (640), and the other side is detachably connected to the above-mentioned connecting frame (620), and the angle of the above-mentioned connecting frame (620) that is lowered through length adjustment can be adjusted to adjust the position at which it is in close contact with the ground.

[0129] Through this, the angle can be limited by the adjusting member (660) so that the connecting frame (620) can be stably attached to the ground.

[0130] The above stopper part (630) is formed at the lower end of the connecting frame (620) and supports the ground.

[0131] At this time, the stopper part (630) is configured in a rear-lock manner so that the floor plate can be easily raised and lowered through lever operation to ensure that it can be placed in close contact with and moved on a stable ground.

[0132] In this way, the outrigger (600) is installed in the support frame (100) so that its position can be adjusted, and is stably attached to the ground to firmly support the support frame (100).

[0133] In addition, the stopper part (630) is configured to be in close contact with or separated from the ground through a rear lock method and a floor lock method so that the support frame (100) can be easily moved.

[0134] In addition, a fastening plate (700) and a fastening member (710) are further included so that the support frame (100) can be extended in the forward and backward directions.

[0135] The above fastening plate (700) is in close contact with the outer surface of the support frame (100) while the support frame (100) is in close contact with the outer surface, and a joining groove (701) corresponding to the first fixing groove (111) is formed on one side, and a long groove (702) corresponding to the first fixing groove (111) is formed horizontally on the other side.

[0136] That is, the above-mentioned fastening plate (700) is made of a sufficient length to accommodate the rack pillar (110) in a state where the rack pillar (110) is in close contact with the rack pillar (110).

[0137] The above fastening member (710) fixes the fastening plate (700) to the support frame (100).

[0138] The above fastening member (710) is made up of various configurations that are fastened through pins, bolts, etc.

[0139] Therefore, the outer surfaces of the above rack columns (110) are placed in close contact with each other in the front and rear directions, and then the fastening plate (700) is placed in close contact with the side.

[0140] After this, the connecting groove (701) and the first fixing groove (111) and the long groove (702) formed on both sides of the fastening plate (700) are fastened to each other through the fastening member (710).

[0141] At this time, the above-mentioned long groove (702) can be fastened by inserting the above-mentioned fastening member (710) and adjusting the gap between the above-mentioned rack pillar (110).

[0142] Through this, the support frame (100) can be expanded in the forward and backward directions.

[0143]

[0144] Next, the usage conditions according to the present invention will be described.

[0145] First, the support frame (100), the reinforcing frame (200), the support plate (300), the handle part (500), and the outrigger (600) are installed as described above.

[0146] Therefore, the above support frame (100) is placed on both sides and then firmly connected through the above reinforcement frame (200).

[0147] And by installing the support plate (300) and the handle part (500), the worker can go up and down and secure a working space by climbing up the support plate (300).

[0148] At this time, the support plate (300) is fastened to the support frame (100) by adjusting the height according to the working environment, purpose, etc.

[0149] In addition, the outrigger (600) is installed on the support frame (100) to prevent movement of the support frame (100) and to firmly fix it to prevent twisting and vibration due to impact or load, thereby enabling stable operation.

[0150] In addition, the support frame (100) can have its height adjusted through the extension member (130).

[0151] And the above support frame (100) can be extended in both directions and in the front and rear directions to be expanded in various ways according to the work environment, purpose, etc.

[0152] That is, the above support frames (100) are arranged in multiple numbers at regular intervals on both sides, and can be extended in the width direction through the reinforcing frame (200).

[0153] And the above support frame (100) can be extended continuously through the fastening plate (700) and the fastening member (710) after being pressed in the front and rear directions, respectively.

[0154] Therefore, the above support frame (100) can be adjusted in height and extended in both directions and forward and backward through the above extension member (130).

[0155] In addition, according to the specifications of the above support frame, the industrial safety and health standards require the installation of a backrest bracket if the height is 7m or longer.

[0156] The above safety fence (510) can be selectively installed in accordance with the specifications of the support frame (100) according to the industrial safety and health standards, and can be selectively installed for the safety of workers by taking into consideration the work environment and purpose.

[0157] Accordingly, the safety fence (510) is configured to be selectively detachable from the handle portion (500), and its length can be adjusted according to the specifications of the support frame (100), so that it can be installed on the support frame (100) of various specifications.

[0158] Through this, the safety fence (510) can be easily used in the support frame (100) manufactured in various specifications taking into account the work environment, purpose, etc., thereby improving work convenience.

[0159] In this way, the safety fence (510) can be adjusted in height according to the work environment and purpose, allowing for safe movement and work at a high location.

[0160] In addition, the support frame (100) and the reinforcing frame (200) can be easily assembled and disassembled by fitting them together through the first fixing groove (111) and the first fixing member (210), so that they can be quickly assembled and used on site.

[0161] And, by stably fixing the support frame (100) through the above outrigger (600), it is possible to support a high load and prevent impact, shaking, etc., thereby creating a stable working environment.

[0162] Lastly, the above support frame (100) can secure a wide working space according to the working environment and purpose by expanding in both sides and front and rear directions, so that the worker can move and work safely in a wide space and pass through a wide working range.

[0163]

[0164] As described above, the rights of the present invention are not limited to the embodiments described above, but are defined by the scope of the claims, and it is obvious that a person having ordinary skill in the art of the present invention can make various modifications and adaptations within the scope of the rights described in the claims.

Claims

1. A support frame having a 'ㄷ' cross-sectional shape with an open inner side, a first fixing groove formed along the longitudinal direction on three sides, a rack column arranged vertically so that the inner sides face each other in the front and rear directions, and a plurality of horizontal members whose ends on both sides are connected to the rack column so as to interconnect the rack columns; The above support frames are arranged at regular intervals on both sides, and a first fixing member is formed at both ends to be horizontally arranged between the support frames and coupled to the first fixing groove, and a plurality of reinforcing frames are installed along the length direction of the support frame; A support plate installed on the footing frame coupled to the inner surface of the reinforcing frame and the horizontal member located on the upper portion of the support frame; A protective frame positioned on the upper side of the support plate and having a second fixing member formed thereon, which is coupled to the first fixing groove at both ends; A handle part installed vertically on the outside of the above support frame; An expandable aerial work platform characterized by comprising an outrigger that is coupled to the first fixing groove at the bottom of the support frame and supports the support frame.

2. In paragraph 1, A connecting plate is formed on the open inner surface of the above rack column, protruding in accordance with the width of the horizontal member, and having a plurality of first fastening holes formed along the length direction. An expandable aerial work platform characterized in that a second fastening hole corresponding to the first fastening hole is formed at both ends of the horizontal member so that a fastening means can be fastened.

3. In paragraph 1, An expandable aerial work platform characterized in that it further includes an extension member that is inserted into the end of the rack column and has a second fixing groove corresponding to the first fixing groove and a third fixing hole corresponding to the first fixing hole, and extends the rack column vertically.

4. In paragraph 1, An expandable aerial work platform characterized in that it further includes a fixing plate that extends from both ends of the reinforcing frame and is in close contact with the rack column, and has the first fixing member formed on the inner surface.

5. In paragraph 1, The above outrigger, A pair of coupling brackets arranged at a certain distance from each other in the vertical direction, with a third fixing member coupled to the first fixing groove on the inner surface and a first coupling plate protruding on the outer surface, which are in close contact with the outer surface of the above-mentioned support frame, A connecting frame formed by a rotating bar with both ends rotatably connected to the first connecting plate between the above connecting brackets, and a reinforcing bar protruding forward and downward from the upper and lower ends of the rotating bar, An expandable aerial work platform characterized by comprising a stopper part that supports the ground and is connected to the lower end of a vertically formed support bar formed at the end of the above-mentioned connecting frame.

6. In paragraph 1, The above outrigger, A coupling bracket having a vertical bar shape to be in close contact with the outer surface of the above-mentioned support frame, a third fixing member that is coupled to the first fixing groove is formed on the inner surface, and an insertion groove with a fastening protrusion provided along the length direction on the outer surface; A fixed bracket that is attached to the inner side of the above insertion groove and is coupled to the above fastening projection, and has a second coupling plate formed on the outer surface, A connecting frame having one side rotatably connected to the second connecting plate and the other side positioned so as to face the ground, An adjusting member installed at the bottom of the above fixed bracket to adjust the angle of the above connecting frame, An expandable aerial work platform characterized by comprising a stopper formed at the lower end of the above-mentioned connecting frame and supporting the ground.

7. In paragraph 1, A fastening plate that is in close contact with the outer surface of the support frame and the support frame, and has a joining groove formed on one side corresponding to the first fixing groove and a long groove formed horizontally on the other side corresponding to the first fixing groove, An expandable aerial work platform characterized by comprising a fastening member that fastens the fastening plate to the support frame.

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