KR101891895B1 - Apparatus of safety fixing for footing scaffolding - Google Patents

Abstract

The present invention relates to a safety fixing device for a scaffolding footrest in which a worker can safely and easily perform a binding and disassembling operation of a device for fixing a scaffolding safety footrest used in construction work.
The safety fastening device for a scaffolding footrest according to the present invention is characterized in that the fastening plate is fixed to the end of the operation footrest and has a ring body protruding from the fastening plate to form an arcuate shape outside the operation footrest, A movable piece having an arc-shaped slot that moves in accordance with the guide of the guide pin and having a ratchet tooth formed on an outer surface thereof and moving at a boundary portion between the fixed plate portion and the ring portion; And a resilient spring for elastically applying a resilient force to the hook so as to maintain a hooked state of the hook on the ratchet teeth of the movable member.
According to the present invention, since the moving piece is coupled to the ring body without a separate moving ring surrounding the outer surface of the footrest bench, it is possible to more easily bind and disassemble the scaffolding scaffold to easily bind and disassemble one hand It is possible to securely bind the work while being able to work.

Description

Technical Field [0001] The present invention relates to a safety fastening apparatus for a footrest,

The present invention relates to a safety fixing device for a scaffolding footrest, and more particularly, to a safety fixing device for a scaffolding footrest which can be easily and safely operated by a single worker The present invention relates to a safety fixing device for a scaffolding footrest.

Generally, in the field of construction, civil engineering, shipbuilding, etc. where many people need to work safely, it is necessary to build a plurality of pillars with steel pipe pipes and to combine the crossbars and ramps connecting the pillars horizontally or vertically, Is horizontally fixed to the support, and a scaffold provided with an operation pedestal for the passage and the operation of the worker is used.

Conventionally, a conventional work footrest constituting such a scaffold as described above is characterized in that a footrest is fixed to the inside of a quadrangular steel frame by a wire mesh or a perforated steel plate and is fastened to an upper footrest bench of a scaffold at the edge of a steel frame, Is welded or bolted.

The fixture is composed of a stopper or the like which is formed in a hook shape or pivotable so as to be caught on a footrest bench formed of a steel pipe or the like and is arc-shaped to the footrest bench. The semispherical fixture welded to the corner of the footrest of the footrest Shaped stopper having a handle rotatable by a pin is provided and an arc-shaped guide slot having a fixing groove formed therein is formed in the stopper so that the stopper moves up and down along the arc-shaped guide slot to engage with the fixing groove, So that they can be combined with each other.

However, in the case of the above-described conventional fastener, it is possible to easily connect and disassemble to the footrest bench, but the thickness of the footrest bench to be connected is fixed. If the thickness of the ballpoint fastener does not match the thickness of the footrest bench, There is a problem that the footrest can not be tightly fastened so that the footrest can not be shaken, and safety problems such as loosening of the fastening of the operation footrest by the frequent separation of the stopper from the fixing groove due to various impacts or shaking during work have been a problem.

A Korean Registered Utility Model No. 20-0357547 is disclosed as a safety fixing device for scaffolding footrests to solve such a problem. Korean Registered Utility Model No. 20-0357547 discloses a structure in which a movable hook having a serrated portion capable of mutual engagement and disengagement in a semicircular arcuate retaining ring for easily and firmly connecting and dismounting a work footrest to various restraining footstands, And a stepping pawl is rotatably coupled to the work footrest.

As shown in Figs. 1 and 2, a fixed device 10 for a work footrest disclosed in Korean Registered Utility Model No. 20-0357547 has a semicircular locking ring 11 integrally formed with a fixing hook support piece 11a, And the other end of the fixing ring 11 is fixed to a moving ring formed by a plurality of teeth. The movable hook 11a is fixed to the four sides of the working foot 20, A semi-arcuate moving loop 12 having a cheat section 12a is coupled by a hinge 13 and a toothed piece 15 with teeth that can interlock and terminate with a pivotable moveable ring ratchet part 12a Is connected to the fixing hook support piece 11a by a hinge 13a so as to correspond to the opposite side of the moving hook 12 and the canceling piece 14 is provided on the hooking piece 15, And the fastening spring 16 fixed to one side of the retaining ring support piece 11a while being in contact therewith, The movement is a ring provided below the take cheat portion (12a) structures.

In order to install the footrest 20 provided with the conventional work footrest fixing device 10 constructed as described above on the footrest bench 30 fixed at right angles to the support 40, The moving ring 12 is moved in the moving ring fastening direction until the moving ring 12 is aligned with the thickness of the footrest bench 30 after pushing the footrest bench 30 to be connected to the inside of the moving ring rack 12, So that the pedestal bench 30 is firmly engaged with the arc while the inclined saw tooth of the corresponding stepping knuckle chute 15a is elastically passed over. At this time, since the swinging knuckle chute portion 15a receives an elastic force in the direction always engaged with the fastening spring 16, it is engaged with the movement ring ratchet portion 12a and is not loosened.

When the work footrest 20 is to be disassembled after the work footrest 20 is installed and used, the walking foot 15 can be pushed in the direction of the footing using the hand releasing piece 14, The meshing between the teeth of the ratchet part 12a and the teeth of the stepping knuckle part 15a is released and the operation pedestal 20 and the pedestal pedestal 30 can be disassembled.

Since the movable hook 12 is hinged to the fixed hook 11 and the movable hook 12 moves away from the work foot 20 at the time of disassembly in the conventional work foot fixing device, It is difficult to perform the binding operation because it has to be rotated and pivoted in the direction of the foot piece 15.

Korean Registered Utility Model No. 20-0357647 (Registered on July 20, 2004)

The present invention has been made to solve the problem of a conventional scaffolding fixture for scaffolds, and it is an object of the present invention to provide a scaffold scaffold which can easily bind and disassemble a scaffold operation scaffold, And a safety lock device.

In order to achieve the above object, according to the present invention, there is provided a safety fixing device for a scaffolding footrest, comprising a ring body fixed to an end of a work footrest and having an annular protrusion protruding from the fixed plate to the outside of the operation footrest, A moving piece having an arc-shaped slot extending in accordance with the guide of the guide pin and moving in a boundary portion between the fixed plate portion and the ring portion and having ratchet teeth formed on the outer surface thereof, And a resilient spring having a latching protrusion for fixing the position of the movable piece by being caught by the ratchet teeth and hinged to the fixing plate portion and an elastic spring for applying an elastic force to the hook so that the hooking protrusion of the hook is caught by the ratchet teeth of the movement member .

Two or more guide pins may be coupled at regular intervals in a position corresponding to the curvature of the slot. The hook is provided with a handle for gripping by the operator to release the hook of the hook.

The fixed plate portion of the annular body is provided with a protruding piece, and a rod extending from the protruding piece toward the annular portion so that the elastic spring is inserted and guided.

The inner surface of the end portion of the ring portion of the ring body is formed into a vertical flat surface so that the footrest can be easily inserted and removed. The inner surface of the lower end of the movable piece is formed into a vertical flat surface at a position where the movable seat is hooked so that the footrest can be easily inserted and removed.

According to the safety fastening apparatus for a scaffolding footrest according to the present invention, since the moving fastener is coupled to the annular body without a separate moving ring surrounding the outer surface of the footrest seat, binding and disassembly of the scaffolding footrest can be facilitated It is possible to easily bind and disassemble one person with one hand, and to securely bind the two.

FIG. 1 is a configuration diagram showing a footrest and a footrest to which a conventional work footrest fixing device is applied.
Fig. 2 is a perspective view showing the fixing device for the work footrest of Fig. 1;
3 is a perspective view showing a safety fixing device for a scaffolding footrest according to an embodiment of the present invention.
4 (a) to 4 (c) are operational views for binding a work footrest to a safety fixing device for a scaffolding footrest according to an embodiment of the present invention.
5 (a) and 5 (b) are explanatory diagrams showing disassembly of a footrest by a safety fixing device for a scaffolding footrest according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

3 is a perspective view showing a safety fixing device for a scaffolding footrest according to an embodiment of the present invention. A safety fixing device 100 for a scaffolding footrest according to an embodiment of the present invention includes a footrest 20 mounted on a footrest bench 30 fixed at right angles to a support 40 as shown in FIG. And includes a ring body 110, a guide pin 120, a moving piece 130, a hook 140, and an elastic spring 150.

The ring body 110 includes a fixing plate 111 and a ring 112. The fixed plate portion 111 is a portion fixed to the end of the operation pedestal 20 (shown in FIG. 1), and the loop portion 112 protrudes outwardly from the fixed plate portion 111 to the outside of the operation pedestal 20.

The fixing plate 111 is provided with a protruding piece 113 and a rod 114 extending from the protruding piece 113 toward the ring 112 to allow the elastic spring 150 to be inserted and guided. The end portion inner surface 112a of the ring portion 112 forms a vertical flat surface so that the footrest bench 30 (see FIG. 1) is easily inserted and removed.

The guide pin 120 is coupled to a boundary portion between the fixing plate 111 and the ring 112 of the ring body 110 and is fixed to the ring body 110 by being inserted into a slot described later of the moving piece 130. The guide pin 120 has a head portion for preventing the moving piece 130 from being detached. The guide pins 120 are coupled to each other at regular intervals in a position corresponding to the curvature of the elongated hole. The guide pins 120 may be coupled to one another or may be coupled to two or more.

The moving piece 130 has an arc-like slot 131 that moves in accordance with the guide of the guide pin 120 and moves in the boundary portion between the fixed plate portion 111 and the ring portion 112, (132) is formed. The lower end inner surface 133 of the moving piece 130 forms a vertical flat surface at a position where the moving piece 130 is hooked on the hook 140 so that the footrest bench 30 (see FIG. 1) . A handle 134 is formed on the upper end of the moving piece 130 so as to protrude outward so as to be easily held by a hand.

The hook 140 is provided with a latching protrusion 141 for fixing the position of the moving piece 130 by being caught by the ratchet teeth 132 of the moving piece 130, . The hook 140 is hinged by a pin similar to the guide pin 120. The hook 140 is formed with a handle 142 which is held by the operator to release the hook of the hook 140 by the operator. The latching protrusions 141 of the hook 140 protrude obliquely to the ratchet teeth 132 in opposite directions.

The resilient spring 150 is a spring that applies an elastic force to the hook 140 to keep the hook 140 of the hook 140 engaged with the ratchet teeth 132 of the moving piece 130, And is a coil spring to be fitted. The elastic spring 150 may be formed of a leaf spring.

The scaffold footrest stabilizer 100 according to the embodiment of the present invention is fixed to the footrest 20 as shown in Fig. 1, and is attached to the footrest bench 30 in the form of a circular pipe, The hooks 112 of the hooks 110 are engaged with the upper side and the hooks 140 are engaged with the movement of the moving pieces 130 to bind or release the binding.

4 (a) to 4 (c) are explanatory diagrams showing an operation state for binding the footrest 20 to the safety fixing device 100 of the scaffolding footrest according to the embodiment of the present invention. In FIG. 4, the guide pin 120 is shown as an example. The hook portion 112 of the hook body 110 is caught by the foot bench 30 and the moving piece 130 is moved upward so that the hook protrusion 141 of the hook 140 The hook 140 is rotated in the counterclockwise direction as shown in FIG. 4 (b) so that the latching protrusion 141 of the hook 140 ) To the right. The latching protrusion 141 is released from the ratchet teeth 132.

Accordingly, the moving piece 130 is guided by the guide pin 120 and moves downward along the curvature of the slot 131 to be brought into close contact with the lower portion of the footrest bench 30. When the hand holding the hook 140 is then released, the hook 140 is rotated in the clockwise direction by the elastic force of the elastic spring 150 so that the latching protrusion 141 is caught by the ratchet teeth 132, The safety lock device 100 is engaged. The safety fastening apparatus 100 of the present invention is configured such that the movement fastening ring 12 is held with one hand of the conventional work footrest fixing device 10 (see FIG. 2), and the other end of the fastening fastening device 14 or the stepping piece 15 A single operator can easily bind the fixing device with only one hand, so that the binding and unlocking operations can be made easier.

5 (a) and 5 (b) are explanatory diagrams showing disassembly of a footrest by a safety fixing device for a scaffolding footrest according to an embodiment of the present invention. As shown in the figure, in order to release the binding of the safety fastening device 100, if the moving fastening piece 130 is simply pushed upward as shown in FIG. 5 (a) Is released.

That is, when the moving piece 130 is pushed upward, the moving piece 130 rises along the curvature of the slot 131 while the ratchet teeth 132 push the latching protrusion 141, When the guide pin 120 is fully lifted so that the end of the slot 131 comes into contact with the moving piece 130 as shown in FIG. 5 (b), the hook 140 is rotated in the counterclockwise direction, The latching protrusion 141 is caught by the ratchet teeth 132 by the resilient spring 150 and the state of the securing of the safety fastening device 100 is maintained.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

20: work footrest 30: footrest stand
100: Safety lock
110: Ring body 111: Fixing plate part
112: Loop 113: Projection piece
114: rod 120: guide pin
130: Movement 131: Slot
132: ratchet teeth 140: hook
141: latching protrusion 142: handle
150: Elastic spring

Claims (6)

A ring body 110 having a top plate 111 fixed to an end of a work foot plate 20 and having an annular protrusion 112 protruding from the fixed plate 111 to the outside of the foot plate 20, A guide pin 120 coupled to a boundary portion between the fixing plate 111 and the ring 112 of the ring body 110 and an arcuate slot A moving piece 130 having a ratchet teeth 131 and a ratchet teeth 132 formed on an outer surface of the ratchet teeth 130 and moving at a boundary portion between the fixing plate 111 and the ring 112, A hook 140 hinged to the fixing plate 111 and having an engaging projection 141 for fixing the position of the moving piece 130 by hooking the hook 140 to the hook 140, And an elastic spring (150) for holding a hooking protrusion (141) of the hook (140) in a state of being caught by the ratchet teeth (132) of the moving piece (130)
The fixed plate 111 of the annular body 110 is provided with a protruding piece 113 and extends from the protruding piece 113 toward the annular part 112 so that the elastic spring 150 is inserted and guided. (114)
The inner surface of the end portion of the annular portion 112 of the annular body 110 forms a vertical flat surface so that the footrest bench 30 can be easily inserted and removed,
The inner surface of the lower end of the moving piece 130 is formed as a vertical flat surface at a position where the moving piece 130 is hooked on the hook 140 so that the footrest bench 30 is easily inserted and removed,
And a handle (134) protruding outwardly from the upper end of the moving piece (130) so as to be easily held by a hand. The method according to claim 1,
Wherein the guide pin is coupled to two or more of the guide pins at a predetermined interval in a position corresponding to a curvature of the elongated hole. The method according to claim 1,
Wherein a hook is formed on the hook so as to allow the operator to release the engagement of the hook. delete delete delete

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