JP6661142B1 - Hanging scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspension scaffold which can be easily suspended without using a horizontal member. SOLUTION: A rectangular frame 13 composed of a longitudinal X beam 11 arranged to face each other and a Y beam 12 arranged to face the X beam at a right angle, and an upper surface of the frame. A rectangular hanging scaffolding 10 including a deck plate 14 laminated on the above, a hanging metal fitting 20 is embedded inside the X beam so as to be retractable and retractable, and a head portion 21 of the hanging metal fitting 21. Is provided with a fall prevention stopper 22 for preventing the X beam from falling into the X beam, and a foot portion 23 of the hanging fitting is provided with a pulling up stop stopper 24 for stopping the lifting from the inside of the X beam. [Selection diagram] Fig. 1

Description

  The hanging scaffold according to the present invention relates to a hanging scaffold used to be suspended downward from a girder material, a railing, or the like in highway construction, bridge construction, construction construction, or the like.

In various types of construction, such as construction of highways and bridges, and in civil engineering work, a scaffold called a hanging scaffold is made, and construction work and repair work are often performed on the scaffold.
Examples of the hanging scaffold include the following.
Attach a scaffolding board such as plywood or wire mesh on a rectangular frame by passing a connector between two base materials facing each other at an appropriate distance, and scaffold the rope hung from the support material. There is a plate connecting device, or a device that locks to a ring attached to a round pipe and hangs under the support.
Such a scaffold plate can be connected to another scaffold plate while being connected and fixed to the front, rear, left and right by a connecting tool, so that a suspended scaffold having a desired size and a desired shape can be constructed.
Construction of such a suspended scaffold is performed as follows.
First, a chain suspension clamp is attached to a position facing a support member such as two girder members, and the chain is suspended therefrom.
The chain is hung on a connecting member or a locking ring of the frame, and the frame is suspended between the supporting members.
Next, an operator rides on the scaffolding plate attached to the frame, attaches another clamp to the front of the supporting member, and suspends the chain therefrom.
The chain is hung on a connecting member or locking ring of another frame, and the frame is hung beside the frame that was hung earlier.
A connector attached to a frame suspended later is connected and fixed to the frame suspended earlier, and the two frames are connected and fixed in the width direction.
These operations are repeated to assemble the suspended scaffold.
As a prior art of such a suspended scaffold, for example, there is Patent Document 1 (Japanese Patent No. 5097313).
In Patent Literature 1, a plurality of cross members are horizontally connected to the upper side of the scaffold plate to reinforce the scaffold plate while interconnecting the scaffold plates to form a work floor, and the scaffold plate is connected to a lower side of the cross member. And a hanging scaffold composed of hanging hardware for lifting a horizontal member by a rope of a hoist.
However, such a method of erection of a suspended scaffold has the following problems.
Arrangement for suspending the scaffolding plate below the transverse member by means of a suspending device connected to the transverse member, or after suspending the scaffold plate on a structure or a structure, releasing the suspending member and releasing the transverse member Removing the cradle is a cumbersome operation, and the feet of the workers may be caught on the horizontal members, which may cause an accident.

Japanese Patent No. 5097313

However, the hanging scaffold described in Patent Document 1 has the following problems.
That is, the rope is pulled upward by the hoisting machine, the suspended scaffold is raised to a high altitude work level as a whole, and the scaffold plate is suspended on the structure or the building, and then the suspension is released to release the suspension. Since the materials have to be removed, the work is troublesome, it takes a lot of trouble and time to complete, and the cost is increased accordingly, and the entire construction period is prolonged due to the temporary installation of the hanging scaffold.
Similar work is required when removing the scaffold.
Therefore, an object of the present invention is to provide a suspended scaffold that can be easily lifted without using a horizontal member in order to solve the above-mentioned problems.
That is, an object of the present invention is to provide a hanging scaffold that has high work safety, good workability, and can easily construct a hanging scaffold in a short period of time and even by an inexperienced person. To provide a hanging scaffold.
It is another object of the present invention to provide a suspension scaffold for directly attaching a connecting member to a beam constituting a frame and connecting the beam.

The hanging scaffold panel of the present invention has the following features.
(1) A rectangular frame made up of a longitudinal X beam and a Y beam arranged to face the X beam in a direction perpendicular to the X beam, and laminated on the upper surface of the frame. A rectangular hanging scaffold with a deck plate,
A suspending metal is buried inside the X-beam so as to be able to protrude and retract, and a drop-preventing stopper is provided at a head of the suspending metal to prevent the suspension from falling into the X-beam. The foot of the metal fitting is provided with a pull-up stop stopper for stopping pull-up from within the X-beam.
(2) In the above (1), the suspension fitting has a first through-hole formed in the head thereof, a second through-hole formed in the foot thereof, and a second through-hole formed in the second through-hole. Is characterized in that the lifting stop stopper is fitted.
(3) In the above (1), the X-linked hanging scaffold is characterized in that the suspended scaffold is connected in the X direction.
(4) In the above (1), the Y-connected hanging scaffold is characterized in that the hanging scaffold is connected in the Y direction.
(5) In the above (1), the XY connection hanging scaffold is connected in the X direction and the Y direction.

  For the hanging scaffold of the present invention, lifting can be easily performed without using a horizontal member, and the connecting tool is directly attached to the beam constituting the frame body and connected, so that work safety is high, workability is good, In a short period of time, even an inexperienced person can easily construct a hanging scaffold, and can provide a cheaper and more durable hanging scaffold.

It is a hanging scaffold of Embodiment 1, (a) is a front view, (b) is a back view. It is the schematic which showed an example of the hanging metal fitting, (a) is the front view seen in the X direction, (b) is the side view seen in the Y direction. It is a hanging scaffold of Embodiment 2, (a) is a front view, (b) is a back view. It is explanatory drawing which shows the procedure of X connection. FIG. 2A is an X connecting tool used for connecting an X beam, FIG. 1A is a perspective view, and FIG. It is a hanging scaffold of Embodiment 3, (a) is a front view, (b) is a back view. It is an explanatory view of a Y connector (for end connection), (a) is a sectional view, (b) is a top view. It is explanatory drawing of an intermediate | middle Y connection tool, (a) is sectional drawing, (b) is a top view. It is a hanging scaffold (four XY connection) of Embodiment 4, (a) is a front view, (b) is a back view.

<First embodiment>
<Basic hanging scaffold 10>
FIG. 1 shows a suspended scaffold (also referred to as a basic suspended scaffold 10) of the first embodiment.
(A) is a front view and (b) is a back view.
The basic suspension scaffold 10 of the first embodiment includes a rectangular frame 13 formed of an X beam 11 extending in the longitudinal direction (X direction) and a Y beam 12 extending in the width direction (Y direction). The deck plate 14 serving as a scaffold plate is laminated on the surface of the frame 13.
In the first embodiment, two X beams 11 are disposed at upper and lower ends (in FIG. 1) of the basic suspension scaffold 10 so as to face each other so as to extend in the X direction. Two are provided at the left and right ends (in FIG. 1) in a direction perpendicular to the direction so as to extend in the Y direction.
These X beam 11 and Y beam 12 form a rectangular frame 13.
Examples of the size of the basic hanging scaffold 10 include those formed in a rectangular shape (for example, a horizontal length of 4850 mm and a vertical width of 2000 mm) on which a person can ride.
As shown in the back view of FIG. 1 (b), the frame body 13 includes a plurality of square U-shaped square members 15 arranged at predetermined intervals in a vertical and horizontal lattice at an intermediate portion thereof for reinforcement. They can be arranged as appropriate.
Examples of the X beam 11 and the Y beam 12 include an angle steel, a channel steel, a channel steel, and the like. Among them, a square pipe having a rectangular cross section having a strength capable of withstanding a high load is preferable.

As an example of the dimensions of the X beam, a cross section having a width of 75 mm, a height of 150 mm, and a length of 4850 mm can be given. As an example of the dimensions of the Y beam, a cross section having a width of 75 mm, a height of 125 mm, and a length of With a length of 1850 mm.
Such a size is an example, and is appropriately determined according to the implementation situation.

<Deck plate 14>
The deck plate 14 that covers the upper surface of the frame 13 serves as a scaffold plate, has appropriate strength so that it does not bend even when people or equipment are placed, and is welded, bolted, or riveted to the frame 13. It is fixed by such means.
Examples of the deck plate 14 include a metal plate such as a galvanized steel plate and an aluminum alloy plate, an expanded metal, and the like, which are appropriately determined according to the implementation situation.

  The upper and lower surfaces of the X-beam 11 are provided with openings 11a and 11b for protruding the hanging hardware 20 attached for lifting the scaffold panel 10.

<Hanging bracket 20>
FIG. 2 shows an example of the hanging fitting of the present invention. (A) is a front view seen in the X direction, and (b) is a side view seen in the Y direction.
Since the suspension scaffold 10 is used by being suspended below a bridge girder or the like, the suspension scaffold 10 is provided with a suspension fitting 20 for lifting by a hoist or the like.
That is, on the longitudinal X-beams 11 constituting the suspension scaffold 10, a suspension fitting 20 for connecting a rope such as a chain suspended from a support material such as a bridge girder is provided, and the rope is attached to the rope. It can be locked.

<Head fall prevention stopper 22>
The hanging fitting 20 is buried inside the X-beam 11 so as to be able to protrude and retract so as not to be separated, and a head 21 of the hanging fitting 20 has a fall prevention stopper for preventing the falling into the X-beam 11. The X-beam 11 is provided with a lifting stop stopper 24 for stopping pulling from the inside of the X-beam 11.
That is, the fall prevention stopper 22 of the head 21 expands the upper end of the head 21 to both sides to provide an enlarged portion 22 a, and measures the size of the enlarged portion 22 a of the opening 11 a provided on the upper surface of the X-beam 11. The size is made larger than the size to prevent the head 21 from passing through the opening 11a on the upper surface of the X beam 11 and dropping into the X beam 11.

<Hanging bracket head 21>
In the embodiment, the fall prevention stopper 22a of the head 21 of the hanging member has an inverted trapezoidal shape. When the head 21 of the hanging member is embedded in the X beam 11, the oblique lower surface 22b and the upper surface of the X beam 11 And a gap can be formed between them.
Thereby, the slanted lower surface 22b is hooked with a hand hook or the like, thereby facilitating the lifting of the suspension fitting 20 embedded in the X-beam 11.
The head 21 of the hanging fitting is provided with a first through-hole 25 used to hook a chain hook or the like via a shackle to lift the hanging scaffold.

<Lifting stop stopper 24 for foot 23>
A lifting stop stopper 24 for stopping the lifting of the suspension 20 from the inside of the X-beam 11 is provided on the foot 23 of the suspension 20.
As the lifting stop stopper 24, a member that does not allow the foot 23 to pass through the opening 11b provided on the lower surface of the X-beam 11 when the hanging metal fitting 20 is pulled up.
In the embodiment, as the lifting stop stopper 24, a rod-shaped body or the like fitted into the second through-hole 26 provided in the foot portion 23 is used.
The lifting stop stopper 24 also serves as a weight for pulling the hanging fitting 20 downward by its own weight and embedding it in the X-beam 11.
Accordingly, it is possible to prevent the hanging fitting 20 from being exposed to the upper surface of the X-beam 11 when it is not used, and to prevent the hanging fitting 20 from being in the way, thereby ensuring the safety of work.
In addition, since the lifting stop stopper 24 supports the scaffold panel 10 at the time of lifting, it needs to have a strength capable of withstanding the load.
In the embodiment, a solid steel bar is fitted into the second through hole and fixed by welding.

<Embodiment 2>
<X-linked hanging scaffold 30>
FIG. 3 shows a suspended scaffold according to the second embodiment (also referred to as an X-linked suspended scaffold) with X-connection.
In other words, the X-linked hanging scaffold 30 is obtained by connecting the suspended scaffold according to claim 1 in the X direction, and the X-linked suspended scaffold 30 of the second embodiment is the X-beam 11 of the two basic suspended scaffolds 10. The end portions 11c and 11d are abutted with each other and connected in the X direction via an X connecting tool 40.
Next, a procedure for forming the X-linked hanging scaffold 30 will be described with reference to the cross-sectional view of FIG.
First, as shown in FIG. 4 (a), the left end 40a of the X connector 40 is inserted in advance into the right end 11c of the X beam 11 of one of the basic hanging scaffolds 10a, and the other hanging scaffold 10b to be connected is added. The left end 11d of the X beam 11 of the hanging scaffold 10b) is fitted and connected to the right end 40b of the X connector 40.

Note that the X coupler 40 is provided with a temporary support 41a in which only the upper parallel portion 41 is extended rightward, and a part of the inner surface above the left end 11d of the X beam 11 of the additional suspension scaffold 10b, The X connector 40 is temporarily placed on the temporary receiving table 41a.
This is because if the left end 11d of the X beam 11 is to be fitted into the X connector 40 at a time, the positioning is not easy.
Therefore, once the left end 11d of the X beam 11 is temporarily placed on the temporary receiving table 41a, the X beam 11 is aligned with the X coupler 40.
Thereby, the additional suspension scaffold 10b can be easily X-connected to the basic suspension scaffold 10a.
At this stage, the connecting bolt 42 used for the X connection is still loosened.

  FIG. 4B shows a state in which the left end 11d of the X beam 11 of the additional suspended scaffold 10b to be coupled is fitted to the outside of the X coupler 40 fitted to the right end 11c of the X beam 11 of the basic suspended scaffold 10a. Show.

In FIG. 4 (c), the X-beam 11 and the X-connecting tool 40, which are X-connected, are tightened by the connecting bolts 42 that penetrate in the vertical direction, and the two basic hanging scaffolds 10a and the additional hanging scaffolds 10b are X-connected. 7 shows a state where the X-linkage is fixed by using the tool 40.
Reference numeral 44 denotes a welded portion for preventing a nut fixed to the bolt 42 from dropping.

<X coupler 40>
FIG. 5 shows a connecting tool having a C-shaped cross section as an example of the X connecting tool 40. (A) is a perspective view and (b) is a cross-sectional view.
Examples of the X coupler 40 include an angle steel, a channel steel, a channel steel (a steel material obtained by processing a thin plate material such as a C-shaped steel and a C-chan into a C shape), and the like. Among them, C-shaped steel with a C-shaped cross section
It is a channel steel formed by processing a thin plate material into a C-shaped cross section, and has a groove 43 in which a part of a vertical portion is cut out.
When the C-shape is deformed by the reduction of the groove 43, even if there is a slight difference in the inner dimensions of the X beam 11, the X coupler 40 can be fitted inside the X beam 11.
Further, even if there is a protrusion or the like inside the X-beam 11, the groove 43 is preferable because the X coupler 40 can be fitted to avoid the protrusion.
As described above, a plurality of basic hanging scaffolds 10 can be connected in the X direction to form an X-connected hanging scaffold 30 having a large area.

<Embodiment 3>
<Y-connected hanging scaffold 50>
FIG. 6 shows a suspended scaffold (also referred to as a Y-connected suspended scaffold 50) of the third embodiment in which the Y-connection is performed. (A) is a front view and (b) is a back view.
The Y connection means that two basic suspended scaffolds are arranged in parallel so that the X beams are in contact with each other, and are connected in the Y direction.
The Y connection suspended scaffold 50 is obtained by connecting the suspended scaffolds described in the first embodiment in the Y direction. The X beams 11 of the two basic suspended scaffolds 10 are arranged in parallel, and the ends thereof are oriented in the Y direction. It is connected using a Y connection tool 60.
When connecting the X beams 11 arranged in parallel by the Y coupler 60, a part of the deck plate 14 is cut out so that the concave member 61 of the Y coupler 60 passes therethrough.

<Y connector 60>
FIG. 7 shows a Y connector 60 for connecting the X beams 11 to each other. (A) is a sectional view, and (b) is a top view.
The Y coupler 60 is provided so as to surround the outer periphery of the end 11e of the two X beams 11 arranged in parallel.
That is, the Y connector 60 includes a concave member 61 whose lower part is wound from the side surface thereof, a lid member 62 that covers the upper part of the concave member 61, and a fixing bolt 63 that connects these members.
After inserting the end portions 11 e of the two X beams 11 into the concave member 61, both ends of the lid member 62 are fastened with fixing bolts 63 so that the upper portions thereof are covered with the lid member 62.
Thus, the end portions 11e of the two X beams 11 are Y-connected and fixed via the Y-connector 60.

<Intermediate Y connector 70>
8A and 8B show an intermediate Y connector 70 used separately from the Y connector 60, wherein FIG. 8A is a cross-sectional view and FIG. 8B is a top view.
The intermediate Y connector 70 is used not for connecting the end 11 e of the X beam 11 but for connecting the intermediate portions 11 f of the X beam 11 in Y.
That is, in addition to the connection at the end of the X beam 11, the connection is also made at the intermediate portion 11f, so that the Y connection hanging scaffold 50 can be more firmly connected.
As the intermediate Y connector 70 used for the intermediate Y connection, the suspending bracket 20 stored in the X beam 11 of the two basic suspension scaffolds 10 to be coupled is used.
That is, the intermediate Y connector 70 is provided with the intervening member 71 interposed between the heads 21 of the two hanging members 20, and the lifting stop fitted into the second through hole 26 of the foot 23 of the hanging member 20. It comprises a stopper 24.
In addition, the intervening member 71 is fixed by penetrating a bolt 72 between the two hanging members 20, 20 and the head 21.
As described above, a plurality of basic hanging scaffolds 10 can be connected in the Y direction to form a large-area Y-connected hanging scaffold 50.

<Embodiment 4>
<XY linked hanging scaffold 80>
FIG. 9 shows a suspended scaffold of the fourth embodiment (the four basic suspended scaffolds 10 are XY-connected). (A) is a front view and (b) is a back view.
The suspended scaffold 80 according to the fourth embodiment refers to a structure in which four basic suspended scaffolds 10 are connected in the X direction and two in the Y direction (also referred to as an XY-connected suspended scaffold).
That is, the XY-connected hanging scaffold 80 of the fourth embodiment is obtained by connecting the basic hanging scaffold 10 described in the first embodiment in the X and Y directions.
As the connecting tool for forming the XY connecting hanging scaffold 80 of the fourth embodiment, the X connecting tool 20 and the Y connecting tool 60 used in the second and third embodiments are used.
Also, depending on the implementation, an intermediate Y-connector 70 can be used.
Accordingly, the plurality of basic hanging scaffolds 10 can be connected in the X and Y directions to form the XY-connected hanging scaffold 80 having a large area.

  Industrial Applicability The hanging scaffold of the present invention has high work safety, good workability, can easily construct a hanging scaffold in a short period of time and even by inexperienced people, and can provide a cheaper and more durable hanging scaffold. Can be used widely.

10 Suspended scaffold 10a Basic suspended scaffold 10b The other suspended scaffold to be connected (additional suspended scaffold)
11 X beam 11a Opening 11b on the upper surface of X beam 11b Opening on the lower surface of X beam 11c Right end 11d of X beam 11 Left end 11e of X beam 11 End 11f of X beam 11 Intermediate portion of X beam 11 Y beam 13 Frame Body 14 Deck plate 15 Square member 20 Suspension fitting 21 Head 22 Fall prevention stopper 22a Enlarged portion 22b Diagonal lower surface 23 Foot 24 Lifting stop stopper 25 First through hole 26 Second through hole 30 Suspended scaffold (X connection Hanging scaffold)
40 X connector 40a X connector 40 left end 40b X connector 40 right end 41 X connector upper parallel part 41a Temporary support 42 Connecting bolt 43 used for X connection 43 Groove 44 Welding part 50 Suspension scaffold of the third embodiment ( Y-connected hanging scaffold)
Reference Signs List 60 Y-connector 61 Recessed member 62 Lid member 63 Fixing bolt 70 Intermediate Y-connector 71 Intermediate member 72 Bolt 80 Suspension scaffold of embodiment 4 (XY-connection suspension scaffold)

Claims (5)

A longitudinal X-beam arranged oppositely;
A rectangular frame made of a Y beam disposed opposite to the X beam in a direction perpendicular to the X beam;
A deck plate laminated on the upper surface of the frame,
A rectangular hanging scaffold with
A hanging bracket is buried inside the X-beam so that it can come and go freely and does not come off,
The head of the hanging bracket is provided with a fall prevention stopper for preventing the fall into the X beam,
A lifting scaffold, characterized in that a lifting stop stopper for stopping lifting from within the X-beam is provided on a foot portion of the lifting bracket. In the hanging bracket,
A first through hole is formed in the head,
A second through hole is formed in the foot,
The suspension scaffold according to claim 1, wherein the lifting stop stopper is fitted into the second through hole. An X-connected hanging scaffold, wherein the hanging scaffold according to claim 1 is connected in the X direction. A hanging scaffold connected in Y, wherein the hanging scaffold according to claim 1 is connected in the Y direction. An XY-connected hanging scaffold, wherein the hanging scaffold according to claim 1 is connected in an X direction and a Y direction.