Safety against overturning for rolling scaffold

Abstract

The present invention relates to a movable scaffolding (60) having a work platform (6) having a footrest (2) and four-sided steel leg members (8) for positioning the work platform footrest (2) at a predetermined height from the ground, and a caster (10) installed on the foot portion of the four-sided leg members (8) for mobility, wherein a pipe-shaped clamp (28) is mounted on the upper and lower portions of a vertical square support tube (24) of a triangular support frame (30), a screw nut (32) is welded and fixed to the outer end of a horizontal square support tube (22) of a triangular support frame (30), and a lead screw (34) that is raised and lowered to prevent slipping or tipping of the movable scaffolding (30) is screw-connected to the screw nut (32), and a plate leg portion (36) is mounted on the lower portion of the lead screw (34), and a manual handle (38) for manual raising and lowering by a worker is mounted on the upper portion of the lead screw (34). A hexagonal nut (40) for electric lifting, which is welded to the manual handle (38) of the lead screw (34) shaft to enable electric lifting control by a worker's tool, is fitted into a hexagonal socket (54) installed in the drill chuck (52) of the electric drill (50) to rotate the lead screw (34) on the shaft, thereby enabling the anti-slip or anti-overturning function of the movable scaffolding (60) in which the anti-overturning member (20) is in place to be much more robust, quick, and easy.

Description

Technology Field

[0001] The present invention relates to temporary structures, and more specifically to an improvement of an anti-tipping device that prevents slipping or tipping of a mobile scaffolding that can be freely moved to a required location within a workplace. Background Technology

[0002] Generally, mobile scaffolding refers to a work platform that can be freely moved to a required location within a workplace to perform work. Mobile scaffolding comprises a work platform consisting of a step and safety railings, steel leg members for positioning the step at a predetermined height above the ground, and casters attached to the feet of the leg members for mobility.

[0003] Such mobile scaffolding is particularly useful when carrying out work at high places in workplaces, such as construction sites, like building ceilings or high walls, and anti-tipping devices are installed on the bottom side of the leg members to prevent the scaffolding from slipping or tipping over during work.

[0004] Among the prior art documents below, Registered Utility Model Publication No. 20-0294741, "Mobile Scaffolding," is configured to have a stopper installed as an anti-overturning device, which provides the advantage of being able to fix it quickly, whereas the stopper has the disadvantage of not being able to properly perform the role of an anti-overturning device.

[0005] In addition, among the prior art documents listed below, Registered Utility Model Publication No. 20-0189911, "Mobile Frame Scaffolding Anti-Tipping Device," discloses a clamp-type device implemented to allow height adjustment using a rotary screw; however, since the height is adjusted using a rotary screw, there is a disadvantage in that the moving and installation of the anti-tipping device cannot be performed quickly. Prior art literature

[0006] Registered Utility Model Publication No. 20-0294741 "Mobile Scaffolding" Registered Utility Model Publication No. 20-0189911 "Mobile Frame Scaffolding Anti-Tipping Device" The problem to be solved

[0007] Therefore, the purpose of the present invention is to provide an anti-tipping device for mobile scaffolding that enables the free movement and installation of mobile scaffolding, while simultaneously ensuring that the anti-slip and anti-tipping functions of the positioned mobile scaffolding are robust, quick, and easy. means of solving the problem

[0008] The present invention, according to the above-mentioned purpose, relates to an anti-tipping device for a mobile scaffolding having a work platform and steel leg members for positioning the work platform at a predetermined height from the ground, wherein casters are installed on the foot portions of the four leg members for mobility.

[0009] A triangular support frame (30) is provided with a hypotenuse square support body (26) welded between a horizontal square support body (22) and a vertical square support body (24) that are welded to each other, and a pipe-shaped clamp (28) is mounted on the upper and lower parts of the vertical square support body (24) of the triangular support frame (30), and a screw nut (32) is welded and fixed to the outer end of the horizontal square support body (22) of the triangular support frame (30), and a lead screw (34) that is raised and lowered to prevent slipping or tipping of the anti-tip device (30) is screw-connected to the screw nut (32).

[0010] A plate foot (36) is mounted on the lower part of the lead screw (34), and a manual handle (38) for manual lifting control by a worker is welded to the upper part of the lead screw (34).

[0011] The invention is characterized by the configuration in which a hexagonal nut (40) for electric lifting is welded to the manual handle (38) of the lead screw (34) shaft to enable electric lifting control by a worker's tool, and which is fitted into a hexagonal socket (54) installed in the drill chuck (52) of the electric drill (50) to rotate the lead screw (34) axially.

[0012] In addition, the anti-tipping device for mobile scaffolding of the present invention is characterized in that the electric lifting hexagonal nut (40) is configured to have the same size as the fastening nut (18) of the pipe-type clamp (28). Effects of the invention

[0013] The present invention has the advantage of enabling not only the free movement and installation of mobile scaffolding but also the much more robust, rapid, and easy prevention of slipping and tipping of the mobile scaffolding once it is in place, by providing an improved anti-tipping device for mobile scaffolding. Brief explanation of the drawing

[0014] FIG. 1 is a perspective view showing an anti-overturning device installed on a movable scaffolding according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the anti-overturning device of FIG. 1. FIG. 3 is a rear view of an anti-tipping device for movable scaffolding according to an embodiment of the present invention. FIGS. 4 and 5 are diagrams showing the usage state of an anti-tipping device for movable scaffolding according to an embodiment of the present invention. Specific details for implementing the invention

[0015] A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0016] FIG. 1 is a perspective view showing an anti-tipping member (20) installed on four-sided leg members (8) of a movable scaffold (60) according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the anti-tipping member (20) for a movable scaffold of FIG. 1, and FIG. 3 is a rear view of the anti-tipping member (20) for a movable scaffold according to an embodiment of the present invention. FIG. 4 and FIG. 5 are usage state diagrams of the anti-tipping member (20) for a movable scaffold according to an embodiment of the present invention.

[0017] The anti-tipping device (20) for a movable scaffold according to the present invention is installed on the four leg members (8) of the movable scaffold (60) as shown in FIG. 1.

[0018] Referring to FIG. 1, the movable scaffolding (60) is equipped with a work platform (6) having a step (2) and a safety railing (4), and four steel leg members (8) for positioning the step (2) of the work platform (6) at a predetermined height from the ground, and additionally, casters (10) are installed on the foot portions of the four leg members (8) to enable mobility of the movable scaffolding (60).

[0019] As illustrated in FIG. 2, the anti-tipping device (20) for a movable scaffolding installed on the four-sided leg members (8) of the movable scaffolding (60) according to the present invention is provided with a triangular support frame (30) in which a hypotenuse square support body (26) is welded between a horizontal square support body (22) and a vertical square support body (24) that are welded to each other, and a pipe-shaped clamp (28) is configured to be mounted on the upper and lower parts of the vertical square support body (24) of the triangular support frame (30).

[0020] A pipe-shaped clamp (28) welded to the upper and lower parts of the vertical square support tube (24) of the triangular support frame (30) is composed of a U-shaped seat body (12), a U-shaped cover (14), a fastening screw rod (16) hinged to the seat body (12), and a fastening nut (18) on the fastening screw rod (16).

[0021] By using two pipe-shaped clamps (28) positioned at the top and bottom of the vertical square support tube (24), the anti-tipping device (20) for the mobile scaffolding can be easily fastened and fixed to the four-sided leg members (8) of the mobile scaffolding (60).

[0022] A screw nut (32) arranged on a vertical axis is welded to the outer end of the horizontal square support tube (22) of the triangular support frame (30) constituting the movable scaffolding anti-overturning member (20) of the present invention, and a lead screw (34) that is raised and lowered to prevent slipping or overturning of the anti-overturning member (30) is screw-connected to the screw nut (32).

[0023] In addition, in the present invention, a plate foot (36) is mounted on the lower part of the lead screw (34), and a manual handle (38) for manual lifting control by a worker is welded to the upper part of the lead screw (34).

[0024] Furthermore, in order to enable electric lifting control by a worker's tool on the manual handle (38) of the lead screw (34) shaft, as shown in FIG. 4 or FIG. 5, an electric lifting hexagonal nut (40) is welded to the hexagonal socket (54) mounted on the drill chuck (52) of the electric drill (50) to allow the lead screw (34) to be rotated electrically.

[0025] The hexagonal nut (40) for electric lifting is sized to fit into the hexagonal socket (54) of the electric drill (50), and preferably, the hexagonal nut (40) for electric lifting and the fastening nut (18) of the pipe-type clamp (28) have the same size.

[0026] This is effective for simultaneously performing the lifting control of the lead screw (34) using the electric lifting hexagonal nut (40) and the screw fastening using the fastening nut (18) of the pipe clamp (28) by using only one hexagonal socket (54) mounted on the electric drill (50).

[0027] The worker installs the anti-tipping device (20) of the present invention on the mobile scaffolding (60), and first uses two pipe-shaped clamps (28) on the anti-tipping device (20) to fasten and secure the anti-tipping device (20) to the four leg members (8) of the mobile scaffolding (60).

[0028] Next, the anti-tipping device (20) installed on the four-sided leg members (8) of the mobile scaffolding (60) can be manually raised and lowered using a manual handle (38) so that it can perform its function properly. Additionally, if the worker wants to raise and lower the device more quickly, the hexagonal socket (54) mounted on the drill chuck (52) of the electric drill (50) can be inserted into the electric lifting hexagonal nut (40) on the manual handle (38) provided on the anti-tipping device (20), and then the electric lifting and lowering can be controlled using the electric drill (50).

[0029] FIG. 4 shows a worker inserting a hexagonal socket (54) mounted on the drill chuck (52) of an electric drill (50) into a hexagonal nut (40) for electric lifting of a lead screw (34) shaft welded on a handle (38) provided on an anti-tipping device (20), and lowering the disc foot (36) of the lead screw (34) by rotating the shaft with electric power. FIG. 5 shows a support state in which the movement of the caster (10) of the leg member (8) of the movable scaffolding (60) is neutralized by the lowering of the disc foot (36) of the lead screw (34).

[0030] Therefore, the worker performs the anti-tipping work by using either a manual handle (38) or an electric lifting hexagonal nut (40) in combination, thereby promoting efficiency and convenience in the work, and the anti-tipping device (20) allows the mobile scaffolding (60) to perform its function of preventing slipping or tipping quickly and easily.

[0031] Although specific embodiments have been described in the above description of the present invention, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be determined by the described embodiments but by the claims and equivalents thereof. Explanation of the symbols

[0032] (2)-- Footrest (4)-- Safety railing (6)-- Workbench (8)-- Leg member (10)-- Caster (12)-- U-shaped base (14)-- U-shaped cover (16)-- Fastening screw rod (18)-- Fastening nut (20)-- Anti-tipping device for mobile scaffolding (22)-- Horizontal square support tube (24)-- Vertical square support tube (26)-- Hypotenuse square support tube (28)-- Pipe-type clamp (30)-- Triangular support frame (32)-- Screw nut (34)-- Lead screw (36)-- Countersunk part (38)-- Manual handle (40)-- Hex nut for electric lifting (50)-- Electric drill (52)-- Drill chuck (54)-- Hex socket (60)-- Mobile scaffolding

Claims

Claim 1 In a movable scaffolding anti-tipping device having a work platform with a step and steel leg members for positioning the work platform step at a predetermined height from the ground, and casters installed on the foot portions of the four leg members for mobility, the device is configured to have a triangular support frame (30) in which a hypotenuse square support member (26) is welded between a horizontal square support member (22) and a vertical square support member (24) that are welded together, a pipe-shaped clamp (28) is mounted on the upper and lower portions of the vertical square support member (24) of the triangular support frame (30), a screw nut (32) arranged vertically is welded and fixed to the outer edge of the horizontal square support member (22) of the triangular support frame (30), and a lead screw (34) that is vertically adjustable to prevent slipping or tipping of the anti-tipping device (30) is screw-connected to the screw nut (32), and a countersunk leg portion (36) is mounted on the lower portion of the lead screw (34), and on the upper portion of the lead screw (34) A mobile scaffolding anti-tipping device characterized by a manual handle (38) for manual lifting control by a worker being welded, and a hexagonal nut (40) for electric lifting being welded to the manual handle (38) on the shaft of the lead screw (34) to enable electric lifting control by a worker's tool, which is fitted into a hexagonal socket (54) installed on the drill chuck (52) of the electric drill (50) to electrically rotate the lead screw (34) on the shaft. Claim 2 A mobile scaffolding anti-tipping device characterized in that, in claim 1, the hexagonal nut (40) for electric lifting is configured to be the same size as the fastening nut (18) of the pipe-type clamp (28).

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