JP2769437B2 - Side plate of slope protection construction molding frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the construction of slopes for slopes facing highways and various facilities constructed by the open-cut method or steep slopes that may collapse. The present invention relates to a side plate of a formwork used for the above.

[0002]

2. Description of the Related Art As is well known, a formwork comprises a pair of left and right side plates and a connecting frame for connecting the both side plates.

[0003] A wire mesh (such as a clamp wire mesh) is used for the side plate, and the connecting frame is formed by an upward U-shaped lower horizontal streak called a lower stirrup and a lower side of the lower horizontal streak. A horizontal bar fixed integrally by means of welding or the like, and a short horizontal bar fixed integrally by means of welding or the like on both sides of the lower horizontal streak (steel bars are used for both horizontal bars, The ends protrude from both sides of the lower horizontal streak), and the outer ends of the respective horizontal bars are rotatably engaged with the side plates.

According to the above-described mold, the cut end of the wire rod of the wire mesh used as the side plate is left as it is,
The worker's clothes get stuck on the cut end, hindering the work, and the hose gets stuck at the time of concrete casting, so that the hose cannot move smoothly. In particular, there is a risk of injury due to a sharp cut edge, which is also dangerous.

Therefore, as shown in Japanese Utility Model Laid-Open No. 50443/1992, the upper ends of the vertical wires forming the net-shaped formwork are wound alternately around the uppermost horizontal wire, and the upper ends of the vertical wires are wound one by one. In some vertical wire rods, the upper end is cut below the uppermost horizontal wire rod to solve the above-mentioned problem.

[0006]

According to the above configuration, every other vertical line is cut upward with respect to the uppermost horizontal line, and every other vertical line is cut downward, so that the cutting process is performed. In addition to the need for a special cutting device, the cutting end protruding above every other vertical line against the top horizontal line is wound around the top horizontal line, so a special winding device is also required .

[0007] For this reason, there has been a problem that the equipment cost is remarkably increased and the cost is increased. Further, there is also a problem that the cuffs of the clothes are caught on the cut ends of the vertical lines located below the uppermost horizontal line.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a side plate of a mold which can ensure the safety of work very easily.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a formwork for slope protection construction comprising a pair of left and right wire mesh side plates and a connecting frame connecting the both side plates. A guard wire rod bent in a continuous wave is fixed above the uppermost horizontal line of the wire mesh forming the side plate by appropriate means, and a cut end of each vertical line forming the side plate is formed below the top of the guard wire rod. Adopt a positioned structure.

[0010]

With the above construction, the guard wire prevents the iron or the concrete casting hole from being caught by the worker as well as the cutting of each vertical line of the side plate. In addition, injuries due to the cut ends of the vertical lines are avoided by guard wires.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the drawings, A is a formwork for slope protection construction.

As shown in FIGS. 1 and 2, the mold A is composed of a pair of left and right side plates 21 using a wire mesh, for example, a clamp wire mesh, and a connecting frame 22 for connecting the both side plates 21. It is.

The connecting frame 22 is fixed, for example, by means of welding or the like along a long horizontal bar 24 made of a steel bar along the lower side of an upper U-shaped lower horizontal streak 23 called a lower stirrup. A short horizontal bar 25 made of a steel bar is integrally fixed to both upper ends of the lower horizontal bar 23 by means such as welding.

The outer ends of the horizontal bars 24 and 25 are connected to the lower horizontal streaks 23.
And is rotatably engaged with the side plate 21 as the connecting portion 26 by protruding from both sides of the base plate.

The rotatable connecting portion 26 is bent in a ring shape, and the ring portion is rotatably engaged with a vertical line constituting the side plate 21 or the ring portion is penetrated by the side plate 21. An arbitrary structure such as driving a retaining member into the ring-shaped portion is adopted.

The upper horizontal bar 25 is provided separately for the left and right sides, and is fixed by means such as welding to the upper portion on both sides of the lower horizontal streak 23 in the middle.

Further, a lower main reinforcing bar 31 is disposed on the bottom side of the lower horizontal bar 23 at an appropriate interval, and an upper main reinforcing bar 32 is disposed on the upper horizontal bar 25 at an appropriate interval. The character-shaped upper horizontal streak 33 is arranged by dropping.

The arrangement of the upper main reinforcing bars 32 is not limited to the upper horizontal bar 25. That is, a connection frame having another configuration may be used.

On the upper side of the uppermost horizontal line 41 of the wire mesh forming both side plates 21, guard wire 4 bent in a continuous wave shape is provided.
2 is fixed by welding or bonding means.
2, the cut ends of the longitudinal bars 43 constituting the side plate 21, that is, the upper ends thereof, are located on the lower side (inside) of the side plate 21. The catching is prevented by the guard wire 42.

As shown in FIG. 3, the guard wire 42 has a downwardly bent portion of a wave-shaped bend over the horizontal line 41 as shown in FIG.
In some cases, the upper end of the vertical line 43 is positioned within the upwardly bent portion of the wavy bend, and as shown in FIG. 4, a wavy bent guard wire 42 in which the upwardly bent portion is longer than the downwardly bent portion may be used.

Of course, the guard wire 42 may be fixed to the vertical line 43 instead of the uppermost horizontal line (as shown in FIG. 5).

In the figure, reference numeral 35 denotes a diagonal bar.

[0024]

As described above, the side plate of the slope protection construction molding frame according to the present invention is constructed as described above, and a tool such as an operator or a trowel to be used is provided at the upper end of each vertical line constituting the side plate. It is possible to prevent the concrete casting hose from sliding, and to move the concrete placing hose smoothly, while preventing the catch from being injured by the guard wire.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mold according to the present invention.

FIG. 2 is an enlarged front view showing a use state.

FIG. 3 is an enlarged side view showing attachment of a guard wire.

FIG. 4 is a side view showing another embodiment of the guard wire.

FIG. 5 is a side view showing another embodiment of the guard wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Side plate 22 Connecting frame 23 Lower horizontal bar 24, 25 Horizontal bar 26 Connecting part 31 Lower main reinforcing bar 32 Upper main reinforcing bar 33 Upper horizontal bar 41 Horizontal line 42 Guard wire 43 Vertical line

Claims (1)

(57) [Claims] 1. A slope protection construction formwork comprising a pair of left and right wire mesh side plates and a connecting frame connecting the both side plates, wherein a continuous wavy line is formed above the uppermost horizontal line of the wire mesh forming the side plates. The guard wire rod bent in a fixed manner is fixed by appropriate means, and the cut end of each vertical line constituting the side plate is positioned below the top of the guard wire rod. Side plate.