JP2668770B2 - Mesh formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mesh formwork with a spacer, and more particularly to a mesh formwork used as a formwork for a legal form or various constructions.

[0002]

2. Description of the Related Art At a plurality of locations between a pair of opposing band networks,
There is known a formwork for forming a frame, which is configured by attaching a spacer formed by forming a steel wire in a cross beam shape. This form frame for a legal frame is configured such that both ends of a horizontal wire constituting a spacer are wrapped around a wire for knitting a belt net and can be freely folded. In addition to the function of keeping the facing distance of a pair of band networks constant,
It functions as a support member for reinforcing bars. And
A first step of laying the formwork for formwork vertically and horizontally on the slope,
Through a second step of arranging reinforcing bars between the band nets and a third step of spraying a mortar or other consolidating material inside the band net, a continuous cross-girder frame is constructed on the slope.

[0003]

At the intersection of the legal frames, it is necessary to arrange the reinforcing bars in a small downward direction. On the other hand, the connecting portion between the belt net and the spacer allows horizontal rotation but is restricted from moving in the vertical direction. Therefore, there is a problem in that a gap is formed between the spacer that should support the upper reinforcing bar and this reinforcing bar, and the supporting of the reinforcing bar tends to vary. In addition, it is pointed out that the connection between the spacer and the belt net is bent at a factory or the like, but the connection processing is troublesome.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to make it possible to adjust the height of a spacer with respect to a reinforcing bar and to perform an operation of attaching the spacer. It is to provide an easy, mesh formwork.

[0005]

According to the present invention, there is provided a spacer which is formed by crossing wires in a vertical and horizontal direction between a pair of opposing band nets so as to be horizontally rotatable. In the suspended net form, a connecting jig is attached to the band net in a multi-stage manner, and the spacer is horizontally rotatable with respect to each band net via the connecting jig, and slides vertically. It is a net form characterized by allowing and connecting. Further, the present invention provides a mesh form in which ends of spacers formed by crossing wires in a vertical and horizontal direction are horizontally connected between a pair of opposing band nets so as to be horizontally rotatable. The connecting portion is formed by bending near the end of each horizontal line forming the connecting jig, the connecting jig is attached to the band net through the grip portion in multiple stages, and the spacer of the spacer is inserted into the through hole of each connecting jig. A mesh frame, wherein a connecting portion is inserted so that the spacer is horizontally rotatable with respect to each of the band nets and is connected while allowing vertical sliding. Further, the present invention is characterized in that the spacer has an opening formed in the middle of the lower horizontal line, and the opening can be expanded by the flexibility of the upper horizontal line. Further, the present invention is characterized in that the connecting jig has a grip portion having a pair of flanges for sandwiching the inside and outside of the wire constituting the band net, and a through hole through which the spacer connecting portion can be inserted. Further, the present invention is characterized in that the connecting jig has a pair of grips that can be wound around a vertical line forming a web by bending a plate material, and a through hole that can insert the connecting portion of the spacer. . Further, in the present invention, each of the pair of opposing band nets has an extended portion that is bent in the direction orthogonal to the straight line portion on the way of the straight line portion, and the pair of band nets is relatively opposed so that the extended portions are opposite. The feature is that they are placed facing each other.

[0006]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. <A> Overall Configuration FIGS. 1 and 2 show an example of a mesh frame. The mesh form has a pair of opposed mesh networks 10 and 10, a spacer 20 laid between the mesh networks 10 and 10, and a spacer 20 which can be horizontally rotated with respect to each mesh network 10 and 10. And a connecting jig 30 for connecting while allowing vertical sliding.

<B> Wire netting The wire netting 10 is, for example, a strip-shaped clamp wire net or welded wire net formed by intersecting vertical lines 11 and horizontal lines 12.
Is aligned with the position of the uppermost horizontal line 12a, and the lower part of each vertical line 11 extends below the lowermost horizontal line 12. The wire net 10 may be made of iron, stainless steel, aluminum, or a wire obtained by plating these wires with zinc or aluminum or a resin coating. Further, the band net 10 includes punching nettles, expanded metal, and perforated plates in addition to the above-described wire net.

<C> Spacer Spacers 20 are horizontally arranged upper and lower horizontal lines 21 and 22.
And vertical connecting lines 23, 23 in which the upper and lower horizontal lines 21 and 22 are traversed in the vertical direction and the intersections are welded, and a wire is attached to each end of each of the upper and lower horizontal lines 21 and 22. The connecting portions 24 and 25 are formed by bending at right angles. Each connecting part 2
Since 4 and 25 determine the vertical sliding amount of the spacer 20 as described later, they are set to be at least longer than the diameter of the reinforcing bar 40 shown in FIG. Spacer 200
The number of horizontal lines is not limited to two as shown, but may be two or more.

<D> Connecting jig The connecting jig 30 is attached to each band network 10 in multiple stages according to the number of connecting portions 24 and 25 of the spacer 20 to be formed.
The grip 14 is a connector 14 that allows horizontal rotation of 0 and sliding in the vertical direction, and is formed integrally with the grip portion 31 gripped by the web net 10 and extends horizontally inside the web net 10. Shaft 3
2 is a basic constituent element, and a through hole 33 is formed in a shaft portion 32 thereof. In the present embodiment, a case will be described in which the grip portion 31 is formed by an annular flange 34 formed on the way of the shaft portion 32 and a cap 36 having a flange 35 fitted to one end of the shaft portion 32. The connecting jig 30 can hold the horizontal line 12 (or the vertical line 11) constituting the band net 10 by the flange portions 34 and 35 by fitting the cap 36 into the fitting hole 37 in the axis of the shaft portion 32. It is like this. Further, in order to prevent the cap 36 from coming off, irregularities that can be fitted are formed on the peripheral surfaces of the cap 36 and the fitting hole 37. Further, the through hole 33 formed in the shaft portion 32 is set to be substantially equal to or slightly smaller than the wire diameter of the connecting portions 24 and 25 of the spacer 20. This is to prevent the slider 20 from sliding freely due to its own weight.

[0010]

[Usage] As shown in FIGS. 1 and 2, a mesh frame of a predetermined size, which has been manufactured in a factory or the like in advance, is arranged in a cross-girder shape as in the prior art. Next, the reinforcing bars 40 are arranged in each mesh form. When arranging the reinforcing bars 40, it is necessary to shift the reinforcing bars 40 up and down so as to cross the parts corresponding to the intersections of the legal frame. The spacer 20 is connected via a connecting jig 30 to each of the belt networks 10 in such a manner as to allow vertical sliding. Therefore, when the support position of the reinforcing bar 40 is fluctuating, the spacer 20 is slid to an arbitrary height to adjust the height. The weight of the reinforcing bar 40 depends on the connecting portions 24 and 25 of the spacer 20 and the through holes 33 of the connecting jigs.
And is supported by the sliding resistance between them. Then, the method frame 41 is built in the net form while avoiding the solidifying material such as mortar.

[0011]

[Embodiment 2] The first embodiment is different from the first embodiment in that the connecting portion 24 of the upper horizontal line 21
Has been described above, and the connecting portion 25 of the lower horizontal line 22 is directed downward so as to penetrate the connecting jigs 30. However, the combination of the directions of the upper and lower connecting portions 24 and 25 may be reversed or the same direction may be used. You may

[0012]

Third Embodiment As shown in FIG. 3, a spacer 20a in which the middle of the lower horizontal line 22 is notched may be applied. In the present embodiment, the upper horizontal line 21 of the spacer 20a can be bent to open the opening 26 of the lower horizontal line 22, so that after the reinforcing bars 40 are arranged, the reinforcing bars 40 There is an advantage that it can be mounted by covering with a net form. Although the illustration of the band net 10 and the connecting jig 30 in the left half of the figure is omitted, they are actually attached like the right side of the figure.

[0013]

Fourth Embodiment FIG. 4 shows another embodiment in which the connecting jig 50 is formed of a plate material. The connecting jig 50 is formed by bending a central portion of the band-shaped plate body to form a shaft portion 52 having a through hole 53, and forming a grip portion 51 that can be wound around the vertical line 11 of the band net 10 at both ends of the plate body. To do.

[0014]

[Embodiment 5] FIG. 5 shows another embodiment in which a connecting jig 60 is manufactured using a wire. The connecting jig 60 is horizontally arranged 2
The two wire rods 67 are configured so that the vertical lines 68 intersect with each other. Each of the wire rods 67 has a bent central portion to form a shaft portion 62 having a through hole 63, and a band at both end portions of the plate body. A grip portion 61 that can be wound around the vertical line 11 of the net 10 is formed.

[0015]

Sixth Embodiment It is also possible to apply the present invention to a mesh form in which a pair of band networks 10a as shown in FIGS. The band net 10a is bent at about 45 degrees near one end of the straight portion 14 to form a corner portion 15, and further bent near the end portion of the corner portion 15 so as to be in a direction perpendicular to the straight portion 14. Thus, an extension 16 is formed. Each band network 10a, 1
The reference numeral 0a designates the straight portions 14, 14 facing each other such that the corner portions 15 and the extending portions 16 are opposite to each other, and the various types of connection described above at a plurality of locations of the facing straight portions 14, 14. The mesh form is assembled by horizontally placing the spacer 20 via the jig 30 or the like. According to the present embodiment, as shown in FIG. 6, when assembling the mesh form into a cross-girder, as shown in FIG. 6, an extension 16 of one mesh form and a straight line of the mesh form arranged in a direction orthogonal to this mesh form. In the overlapped portion where the end of the portion 14 is overlapped,
There is an advantage that the inferiority of each mesh form can be absorbed by arbitrarily adjusting the inclinations of a and 10a.

[0016]

The present invention has the following specific effects. <A> Rather than connecting the spacer directly to the belt net, it is connected via a connecting jig that allows the spacer to slide up and down, so the height of the spacer can be adjusted. it can.
Therefore, the height of the spacer can be adjusted according to the installation height of the reinforcing bar to reliably support the reinforcing bar. <B> Since the spacer can be connected to the through-hole of the connecting jig which has been previously assembled in a factory or the like by simply inserting the end of the spacer, the spacer can be easily connected.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a mesh formwork according to a first embodiment.

FIG. 2 is a perspective view thereof.

FIG. 3 is an explanatory diagram of a net formwork according to a third embodiment using another spacer.

FIG. 4 is an explanatory view of a fourth embodiment in which a connecting jig is configured by a plate body.

FIG. 5 is an explanatory view of a fifth embodiment in which a connecting jig is configured by a wire.

FIG. 6 is an explanatory view according to a sixth embodiment in which a net formwork is constituted by a band net having a corner portion and an extension portion, and is a plan view showing an example of laying the net formwork.

FIG. 7 is a perspective view of a mesh frame according to a sixth embodiment.

[Explanation of symbols]

10, 10a ... band network 11 ... vertical line 12 ... horizontal line 14 ... linear portion 15 ... corner portion 16 ... extension portion 20, 20a ... spacer 21 ... upper horizontal line 22 ... lower horizontal line 23 ... vertical connecting lines 24, 25 ... connecting parts 26 ... openings 30, 50, 60 ... connecting jigs 31 ... gripping parts 32 ... shaft parts 33 ... through holes 34, 35 ...
… Tsuba 36 …… Cap 37 …… Fitting hole 40 …… Reinforcing bar 41 …… Legal frame

Claims (6)

(57) [Claims] 1. A mesh form in which ends of spacers formed by crossing wires in a vertical and horizontal direction between a pair of opposing band nets are connected horizontally so as to be freely rotatable, and are horizontally laid. A connection jig is attached to the band net in a multi-stage manner, and the spacer is connected to each of the band nets via the connection jig so as to be horizontally rotatable and to allow vertical sliding. Yes, a net formwork. 2. A mesh form frame formed by connecting ends of a spacer formed by intersecting wires in a vertical and horizontal direction between a pair of opposing band nets so as to be horizontally rotatable and horizontally suspended. The connecting portion is formed by bending near the end of each horizontal line constituting the spacer, and connecting jigs are attached to the webbing in a multi-stage manner through the holding portion, and the spacer is provided in the through hole of each connecting jig. A connection portion of the mesh frame, wherein the spacer is horizontally rotatable with respect to each of the band nets, and is connected while allowing vertical sliding. 3. The spacer according to claim 1, wherein the spacer forms an opening in the middle of the lower horizontal line, and the opening can be expanded by the flexibility of the upper horizontal line. A net formwork characterized by the presence of 4. The connecting jig according to any one of claims 1 to 3, wherein the connecting jig can pass through a grip portion having a pair of flanges for holding the inside and outside of a wire constituting the band net and a connecting portion of the spacer. A net formwork characterized by having transparent holes. 5. The pair of grippers according to claim 1, wherein the connecting jig bends a plate material and can be wound around a vertical line forming a web, and a spacer connecting portion. Characterized by having a through hole through which a mesh can be inserted. 6. The extended portion according to claim 1, wherein each of the pair of opposing band nets has an extended portion that is bent along a straight line portion in a direction orthogonal to the linear portion. A net formwork, characterized in that a pair of webs are arranged so as to face each other in opposite directions.