KR20180097045A - Clamping apparatus for footboard - Google Patents

Abstract

The present invention relates to a clamping apparatus for a footboard of a scaffold to fixate a footboard of a scaffold to a scaffold pipe and, more specifically, relates to a clamping apparatus for a footboard of a scaffold, which enables a footboard of a scaffold to be easily and quickly installed and released, prevents a clamp from being clamped in a scaffold pipe by unintendedly sliding and rotating in a lower direction when the footboard of a scaffold is released, and comprises: a protrusion formed to protrude in the clamp as a locking means to maintain a clamping release state of the clamp; a guide groove into which the protrusion is inserted for the protrusion to vertically slide and rotate; and a locking groove connected to the front or the rear in an upper end portion of the guide groove for the protrusion to be caught therein.

Description

[0001] CLAMPING APPARATUS FOR FOOTBOARD [0002]

The present invention relates to a scaffolding foot hanging apparatus for fixing a scaffold footrest to a scaffold pipe, and more particularly, to a scaffold foot fastening apparatus for scaffolding which is easy and quick to install and disassemble a scaffold footrest, A clamping protrusion formed in the clamp and a clamping protrusion protruding from the clamp to hold the clamping protrusion so as to guide the vertically sliding rotation of the clamping protrusion And a locking groove connected to the guide groove and the upper end of the guide groove forward or rearward to hook the locking protrusion.

In the construction site of a large building, a scaffold is installed to enable the operator to walk and complain, which is called scaffolding.

Conventional scaffolds have scaffolding scaffolds placed on scaffolding pipes that are temporarily installed on the site, and scaffolding scaffolds are fixed with wires or wires so that they do not move.

However, in such a conventional scaffold, the installation structure of the scaffold is usually carried out at a height higher than a certain height from the ground, and in such a situation that it is not easy to secure space for the operation, the scaffold scaffold is fixed There is a problem in that the operation to do so is very dangerous and difficult.

Accordingly, a scaffold foot hanging device is used to facilitate the installation of scaffold footrests.

The conventional footrest hanging apparatus for scaffolding, as shown in FIG. 6 (hereinafter referred to as FIG. 6 for describing the prior art and the reference numerals of FIGS. 1 to 5 for explaining the present invention, The fastener 23 provided on both side surfaces of the fastener 21 is fixed by welding so that the fastener 23 can be easily engaged with and separated from the scaffold pipe 22. [

The fixing member 23 has two pins 25 fixed to the fixing member 24 having an arc-shaped engaging portion 24a formed therein so as to be engaged with the scraper pipe 22, The guide grooves 26a and 26b are engaged with each other so that the clamp 26 is slid on the upper and lower sides and the engagement grooves 26c are formed horizontally at the lower end portions of the guide slots 26a located above the guide slots 26a and 26b, So that the clamp 26 can be maintained in a rotated state.

In order to separate the scaffold footplate 21 from the scaffolding pipe 22, the clamping member 23 is moved upward by sliding the clamp 26 upward to open the opening of the engaging portion 24a In this state, the scaffold footrest 21 must be lifted and removed.

However, in order to stably fix the footrest for scaffolding, at least four fixtures 23 must be provided on both sides of the scaffold footrest,

The clamp 26 of each fastener 23 must be slid up and down sequentially in order to separate the scaffolding scaffold. In the case of the conventional fastener 23, the lock 26, which can keep the clamp 26 in the upward sliding state, The clamp of the clamping device which is released from the clamping is naturally dropped by the work vibration or the like, that is, the clamping device is frequently clamped while rotating downwardly, There is a problem that separation of scaffolding scaffolding and scaffold disassembly work are very troublesome.

In other words, unless the clamping release of a plurality of scaffolding footrests provided on the footrest for scaffolding is performed at the same time, the clamping-released fixture is clamped again too easily, so care must be taken in the separation of the scaffold footrest, This is troublesome and takes a long time.

As another conventional technique, there is a registered utility model No. 20-0450222 entitled "

7 (for explanation of the prior art, the reference numerals of Figs. 1 to 5 for explaining the present invention are not related to each other), the opening of the opening 1 And a working holding piece 30 rotatably coupled by the holding pins 20 and 21. The vertical holding portion 30 and the horizontal holding portion 30 are formed on the upper portion of the operating holding piece 30, And a rotary knob 40 made up of a rotary knob 44 is provided so that the rotary knob 40 is inserted into a holding groove formed in the upper portion of the holding fixing piece 10 so that the opening 1 is kept open, (30) is locked.

However, in the case of the registered utility model, since the turning handle 40 protrudes to the upper portion of the operating holding piece 30, contact interference may occur during the rotation of the operating holding piece 30,

The rotary knob 40 is composed of a vertical portion 42 protruded to the upper portion of the operation holding piece 30 and a horizontal portion 44 bent in the direction of the holding fixing piece 10 at the upper end portion of the vertical portion, The horizontal portion 44 of the turning handle 40 is gripped by the operator so that the space between the foot plate and the pipe is narrowed so that the horizontal portion 44 of the turning handle 40 is used However,

Since the front end of the operating holding piece 30 invades into the area of the opening 1 when the operating holding piece 30 is rotated upward and the operating holding piece 30 is automatically closed by bumping against the pipe, Even when the operating holding piece 30 is rotated upward, when the foot plate is disassembled, the pipe can not contact with the horizontal portion 44 and can not be inserted into the holding groove, so that the clamping unlocked state can not be maintained.

That is, although the above-mentioned registra- tion utility model may be advantageous for the installation work of the footrest, the disassembly operation of the footrest has the same problems as the conventional footrest hanger.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for installing and dismounting a scaffolding scaffold, A guide groove is formed in the clamp so as to protrude therefrom as a locking means so as to prevent the clamping member from sliding back and forth, And is provided with a locking groove to which a locking projection is attached.

It is another object of the present invention to provide a scaffolding foot hanging device in which an inner lower surface of a locking groove is inclined downward from a front end portion to a rear end portion so that the locking protrusion can be securely held in the locking groove in the unclamping released state .

Furthermore, the upper and lower widths between the inner upper surface and the lower inner surface of the locking groove are set so that the upper and lower widths of the locking grooves from the front end to the rear end And to provide a scaffolding foot hanging apparatus which is formed to be wider as it goes down.

In addition, the present invention is characterized in that the body is connected in a vertically symmetrical manner so as to increase the safety of the installation of the scaffolding footrest and to securely install the scaffolding footrest on the scaffold pipe provided with the upper and lower heat pipes, And an object of the present invention is to provide a scaffolding hanging apparatus in which the locking means is provided on a lower body and the scaffolding footrest is connected to an upper body.

According to an aspect of the present invention, there is provided a footrest hanging apparatus for a scaffold,

A body having a hook having a lower end opened at a front end thereof and connected to a fixed piece hooked to the scaffold pipe, a rear end connected to a scaffolding foot, and a pivoting protrusion protruding from one side of the fixed piece;

And a sliding groove in which the pivoting protrusion is inserted to pivot the pivoting protrusion upward and downward about an axis, wherein the body is clamped to the scaffold pipe while closing the catching part, or the body is released from the scaffold pipe while opening the catching part clamp; And

And locking means for maintaining the clamped state of the clamp,

Wherein the locking means comprises:

An engaging projection formed on the other side surface of the clamp,

A guide groove provided in the fixing piece for guiding the upward and downward sliding pivotal movement of the latching protrusion with the latching protrusion inserted,

And a locking groove connected to an upper end of the guide groove and rearward to hook the locking protrusion.

In the scaffolding foot hanging apparatus according to the present invention,

The inner bottom surface of the locking groove is formed to be inclined downward from the front end portion to the rear end portion.

Further, in the footrest hanger for a scaffold according to the present invention,

The locking groove is formed such that the vertical width between the inner upper surface and the inner lower surface widens from the front end to the rear end.

Furthermore, in the scaffolding foot hanging apparatus according to the present invention,

Wherein the body is connected in a vertically symmetrical manner as a pair,

The clamp and the locking means are provided on the lower body, and the scaffolding footrest is connected to the upper body.

The scaffolding hanging device for scaffolding according to the present invention is easy and quick to install and dismount scaffolding scaffolding, and in particular, it is possible to prevent the scaffold from being clamped by inadvertently sliding downwardly by rotating the clamp, The clamp is pivoted backward in the unlocked state so that it is not easy to use because it does not invade the locking area and the locking protrusion can be securely held in the locking groove in the unclamping state and the locking protrusion can be hooked into or removed from the locking groove It is easy to use by reducing the interference due to contact, and for the safety of the installation, the scaffolding footrest can be installed in the two-stage scaffold pipe arranged in the vertical direction.

1 is a perspective view showing an installation state of a scaffolding footrest according to a first embodiment of a footrest hanging apparatus for scaffold according to the present invention.
2 is a perspective view showing a first embodiment of a footrest hanging apparatus according to the present invention.
3 is a side view showing a first embodiment of a footrest hanging apparatus for scaffolding according to the present invention.
4 is a perspective view showing a scaffolding footrest installation state using a second embodiment of the footrest hanging apparatus according to the present invention.
5 is a perspective view showing a second embodiment of a footrest hanging apparatus for scaffolding according to the present invention.
6 and 7 are side views for explaining a conventional footrest hanger for a scaffold.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

 In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

In describing the footrest hanging apparatus for scaffolds according to the present invention, when an exact rough direction reference is specified with reference to FIG. 2 for the sake of convenience, gravity acts on the direction of looking at the fastening piece 11 of the front end Direction is set to be downward, downward, leftward and rightward as viewed in the direction of the downward direction, and direction is specified according to this standard unless otherwise specified in the detailed description and claims of the invention relating to other drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a footrest hanging apparatus according to the present invention will be described with reference to the accompanying drawings.

1 and 5, the present invention relates to a scaffolding foot hanging apparatus C for hanging a scaffold footrest F on a scaffold pipe P,

1 and 4, a pair of left and right footrest hangers C are provided on the front and rear sides of the footrest footrest F having a predetermined length in the longitudinal and transverse directions, respectively And the number and arrangement of the footrest hangers C may vary depending on the specifications of the footrest footrest F and the design structure of the scaffold pipe P. [

1 to 5, a scaffolding foot hanging apparatus C according to the present invention is mainly composed of a body 10 (hereinafter referred to as a " scaffold ") which is engaged with a scaffolding pipe P, A clamp 20 for fixing the body 10 to the scaffold pipe P and a locking means L for maintaining the unclamping state of the clamp 20. [

The first embodiment shown in Figs. 1 to 3 is used for installing a scaffolding foot F on a scaffold pipe P having a single-stage structure,

The second embodiment shown in Figs. 4 and 5 is used to install the scaffolding foot F to the scaffold pipe P of the two-stage structure.

First, a first embodiment of the present invention will be described with reference to Figs. 1 to 3. Fig.

The body 10 allows the scaffolding foot F to be mounted on the scaffold pipe P,

A fixing part 11 which is hooked on the scaffold pipe P is provided at the front end and a coupling part 12 which is connected to the scaffolding foot F by the rear end part of the fixing part 11 is provided, 11 and the engaging portion 12 may be bent into an "a" shape and connected to each other or may be connected flatly in a 'i' shape.

The coupling portion 12 may be coupled to one side of the scaffolding foot F by bolting or welding. In the figure, bolt fastening holes 12a formed through right and left side surfaces of the coupling portion 12, Is shown in Fig.

The fixed piece 11 has an annular shape with an engagement portion 11A opened at the lower side and a scraper pipe P is inserted or separated through a lower opening of the engagement portion 11A, Although an arc-shaped latching portion 11A is shown as an example of an embodiment in which the pipe P is installed, a square-shaped latching portion is also possible in the case of a rectangular scraper pipe.

The lower opening width of the latching portion 11A is formed so as to correspond to the outer diameter of the scaffold pipe P to be fitted and when the lower opening of the latching portion 11A is closed (partially closed) by the clamp 20, The width of the opening portion is narrowed (clamped) so that the scraper pipe P and the engaging portion 11A are not separated from each other,

The width of the lower opening portion is widened again (clamping release) in the state where the lower opening of the latching portion 11A is opened by the clamp 20 to separate the scaffolding pipe P and the latching portion 11A, F) can be disassembled.

A rotating protrusion 13 is protruded from one side surface (right side in FIG. 2 [A]) of the fixing piece 11 to allow the clamp 20 to vertically slide and rotate the rotating protrusion 13 .

The rotation protrusion 13 is provided with a head portion that is wider than the width of the sliding groove 21 of the clamp 20 to prevent the clamp 20 from coming off. The rotation protrusion 13 is welded to the fixing piece 11 Or on the other side by a rivet 13a.

The clamp 20 pivots up and down on the pivotal projection 13 so that the body 10 is clamped to the outer circumferential surface of the scaffold pipe P or the scaffold 10 is connected to the scaffold pipe P, So as to be able to be separated,

More specifically, the body 10 is slidably pivoted downward to close the opening of the latching portion 11A so that the body 10 is clamped to the scaffold pipe P, or the opening portion of the latching portion 11A is opened, So that the body 10 is unclamped from the scaffold pipe P.

The clamp 20 has a sliding groove 21 formed so as to penetrate both sides in a shape corresponding to the sliding pivot path so that the pivot projection 13 is fitted in the sliding groove 21.

The locking means L maintains the unclamping state of the clamp 20, i.e., the upward sliding rotation state,

A locking projection 22 protruding from the other side of the clamp 20 (the left side in [A] of Fig. 2)

A guide groove 14 provided in the fixing piece 11 for guiding the upward and downward sliding movement of the latching protrusion 22 with the latching protrusion 22 inserted therein,

And a locking groove 14a connected to the upper end of the guide groove 14 so as to be rearwardly engaged with the locking protrusion 22.

The engaging projection 22 is formed on the other side of the clamp 20 contacting with one side of the fixing piece 11,

When the clamp 20 rotates upward to open the lower opening of the latching portion 11A, the clamp 20 rotates upward along the guide groove 14,

And is hooked on the locking groove 14a by being turned backward about the axis of the rotation protrusion 13 in the opened state (in the unclamping state) of the locking portion 11A.

Therefore, when the clamp 20 is unclamped for the installation and disassembly of the scaffold foot F, the locking projection 22 is fitted in the locking groove 14a, and the downward sliding due to the weight of the clamp 20 It is possible to easily and quickly carry out the installation and disassembly of the scaffolding footrest F since the rotation is restricted.

Particularly, as in the present invention, when the locking projection 22 of the clamp 20 is inserted into the locking groove 14a and engaged,

As the clamp 20 is always kept open so long as the operator intentionally rotates the clamp 20 forward to unlock the locking projection 22 from the locking groove 14a,

It is possible to prevent the clamp 20 from being clamped again by vibrations or shocks generated during the work, even if one worker sequentially clamps the plurality of scaffolding foot hangers C, It is convenient to disassemble.

Particularly, as in the present invention, when the clamp 20 is turned backward after the upward sliding pivot, the clamp 20 does not touch the region of the latching portion 11A, So that it can be prevented from being clamped again.

6 and 7, in the conventional scaffolding foot hanging apparatus, when the clamp is slid upwardly, the upper end of the clamp touches the inside of the fastening region and contacts the scaffold pipe, When the clamp is opened in the state where the scaffolding footrest is installed, the clamp is returned to the original position due to the contact with the scaffold pipe.

In the present invention, as shown in Fig. 3, the above-described problem can be solved because the clamp 20 is bent backward and does not enter the latching portion 11A.

In addition, in order to fix the scaffold foot F to the scaffold pipe P, the engaging projection 22 is pulled out of the locking recess 14a, and when the clamp 20 is slid downward, the engaging projection 22 Is supported by the lower end of the guide groove 14 so that the fixing of the scaffolding footrest F is firmly maintained,

In this case, even if a pressure acts so that the scaffold footrest F is heard, unless the operator manually rotates the clamp 20 in the counterclockwise upward direction by means of the sliding pivotal structure of the clamp 20, 22 clamp the lower end portion of the guide groove 14, that is, the fixing piece 11 downwardly, the clamp 20 is kept in the closed state and separation of the scaffolding foot F is prevented.

1 to 3, the inner lower surface of the locking groove 14a is formed to be inclined downward from the front end portion to the rear end portion.

That is, the locking groove 14a has a shape bent from the upper end of the guide groove 14 to the rear lower side.

Therefore, unless the operator lifts the clamp 20 and pulls the clamp 20 forward, when the locking projection 22 is caught in the locking groove 14a, the locked state is maintained and the unintentional return of the clamp 20 can be prevented have.

Further, the locking groove 14a is formed such that the vertical width between the inner upper surface and the inner lower surface becomes wider from the front end to the rear end.

That is, the overall shape of the locking groove 14a is formed to have a similar inverted triangular shape.

When the locking projection 22 is hooked on the locking groove 14a or removed from the locking groove 14a while the locking projection 22 is not easily detached from the locking groove 14a, Is not in contact with the fixing piece 11, which is convenient to use.

As long as the operator does not intentionally latch the locking protrusion 22 in the locking groove 14a due to the inclined structure and shape of the locking groove 14a, the locking protrusion 22 is always positioned in the guide groove 14 As a result,

When the scaffold foot hanging device C is mounted on the scaffold pipe P in order to install the scaffold footrest F,

The clamp 20 is automatically lifted and opened by the pressure of the lower end of the clamp 20 when the scaffold pipe P is fitted into the clamping portion 11A, The closure is made while dropping again, so that the scaffold footrest F can be easily installed.

That is, when the scaffold foot F is installed in the scaffold pipe P, the locking means L is not used and only the engagement structure of the rotation protrusion 13 and the sliding groove 21 is used to open the clamp 20 Automatic closing is performed,

It is more convenient to hold the clamping protrusion 22 in the locking groove 14a so that the clamp 20 is kept in the open state only when the scaffolding foot F is disassembled in the scaffold pipe P. [

The clamp 20 is provided with a clamping protrusion 23 protruding on one side of the clamp 20, that is, opposite to the side where the clamping protrusion 22 is formed, so that the operator can grip the clamp 20 by sliding the clamp 20 .

The reason why the clamping protrusion 23 is provided in the clamp 20 is that the space between the scaffold pipe P and the scaffolding foot F is narrow and the operator moves the clamp 20 (Especially the upward sliding pivoting).

Particularly, in the case of the present invention, the locking protrusion 22 must be hooked to the locking groove 14a or removed from the locking groove 14a,

Unlike a conventional fastener, since the sliding groove 21 of the present invention is provided in a simple form corresponding to the sliding pivot path of the clamp 20, the adjustment of the angle of the clamp 20 is preceded.

However, in the state where the body 10 connected to the scaffolding footrest F is mounted on the scaffold pipe P, the space for moving the clamp 20 is narrowed, so that the operator can directly grasp the clamp 20 with his / So that it is possible to solve such a problem through the grip protrusion 23. [

Next, a second embodiment of the present invention will be described with reference to Figs. 4 and 5. Fig.

In the second embodiment of the present invention, the body 10 having the above-described configuration is connected in a pair in a vertically symmetrical manner, and the clamp 20 and the locking means L are provided on the lower body 10 And is used to install the scaffolding foot F on the two-stage scaffold pipe P.

That is, in addition to the configuration of the first embodiment, the upper body 10A, which is not provided with the clamp 20 and the locking means L, is vertically connected to the lower body 10 by the connecting portion 15,

The footrest hanging apparatus C for scaffolding is installed in such a manner as to be sandwiched between the scaffold pipes P arranged in the upper and lower rows.

Therefore, if the scaffolding foot hanging device C is provided on the lower scaffold pipe P and another scaffold pipe P is installed on the upper scaffold member P by sandwiching the other scaffold pipe P on the engaging portion 11A of the upper body 10A,

The scaffolding pipe P on the upper side holds the scaffolding foot hanging device C while pressing it downward to prevent the scaffolding footrest F from moving in the longitudinal direction of the scaffold pipe P, And can be used.

The scaffolding foot F is connected to the engaging portion 12 of the upper body 10A and the engaging portion 12 of the lower body 10 is connected to the engaging portion 12 of the scaffolding foot hanging device C. A frame for bearing capacity is connected.

Although the connecting portion 15 is shown as being provided at the front end of each fixing piece 11 of the upper and lower bodies 10A and 10, the position and shape of the connecting portion 15 are not limited. That is, the upper and lower bodies 10A and 10 may be directly connected to each other without the connecting portion 15, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. Substitutions should be construed as falling within the scope of protection of the present invention.

F: Scaffold for scaffolding P: Scaffold pipe
C: Scaffolding hanging device for scaffolding L: Locking means
10, 10A: Body 11: Fixing piece
11A: engaging portion 12: engaging portion
12a: bolt fastening hole 13:
13a: Rivet 14: Guide groove
14a: Locking groove 15:
16: elastic clip 17: elastic spring
20: clamp 21: sliding groove
22: stopping mechanism 23: gripping projection

Claims (4)

A body having a hook having a lower end opened at a front end thereof and connected to a fixed piece hooked to the scaffold pipe, a rear end connected to a scaffolding foot, and a pivoting protrusion protruding from one side of the fixed piece;
And a sliding groove into which the pivoting protrusion is inserted to pivot the pivoting protrusion upward and downward about an axis, wherein the body is clamped to the scaffold pipe while closing the catching part, or the body is released from the scaffold pipe while opening the catching part clamp; And
And locking means for maintaining the clamped state of the clamp,

Wherein the locking means comprises:
An engaging projection formed on the other side surface of the clamp,
A guide groove provided in the fixing piece for guiding the upward and downward sliding pivotal movement of the latching protrusion with the latching protrusion inserted,
And a locking groove connected to an upper end of the guide groove and rearward to hook the locking protrusion.
The method according to claim 1,
Wherein the locking recess is formed such that the inner lower surface is inclined downward from the front end portion to the rear end portion.
3. The method of claim 2,
Wherein the locking groove is formed such that the vertical width between the inner upper surface and the inner lower surface is wider from the front end to the rear end.
4. The method according to any one of claims 1 to 3,
Wherein the body is connected in a vertically symmetrical manner as a pair,
Wherein the clamp and the locking means are provided on a lower body, and the scaffolding footrest is connected to an upper body.

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