JP3202201B2 - Formwork fixing method and fixing jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of fixing a formwork, and more particularly to a method of gripping a weir of a grouting formwork and a jig therefor.

[0002]

2. Description of the Related Art Conventionally, a separator 9 as shown in FIG. 4 is used for fixing a damping plate of a grout injection mold to keep the damping plates at a predetermined interval. The assembling of the mold using the separator 9 and the grout injection include: 1) attaching cones 10 to both ends of the separator 9; 2) making a hole through the cone shaft portion at a predetermined position of the damper 6 in advance; 6
, A separator 9 is inserted from the inside, connected to a foam tie (registered trademark) 11, 4) A round pipe 8 (vertical flutter and horizontal flutter) is sequentially set up, a washer 12 is applied, and a tightening nut 13 is tightened to form a mold. Assembling 5) Then grouting the mold with the separator embedded. However, in the case of using such a means, in removing the mold, it is necessary to perform various operations such as removing the washer 12 and the damping plate 6 and then removing the cone 10 and filling the mortar into the cone mark, which is complicated. The used separator cannot be reused, and there is a problem that it becomes difficult to reuse the separator because holes are formed in the weir. That is, the conventional form fixing means requires a large number of disposable separators for each construction site, and
Complicated work is required.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to fix and remove a mold by a simple operation without using a conventional jig for fixing a mold which requires a complicated operation. It is an object of the present invention to provide a mold fixing method jig and a fixing jig which enable reuse of the mold and the fixing jig.

[0004]

The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and found that the above-mentioned problems can be solved by a jig having a very simple structure comprising a pair of columns and a pair of connecting rods. They found what they could do and completed the present invention. That is, the present invention is a method of gripping the dams on both sides of the mold by a pair of columns and a pair of connecting rods,
A pair of columns are leaned against the crests on both sides, and both ends of one connecting rod are detachably connected to upper ends of the pair of columns, and both ends of the other connecting rod are connected to the upper ends. Lower part, and by being detachably connected to the pair of struts at a position above the height of the formwork, the pair of struts are fixed while sandwiching the dams on both sides. The pair of columns has upper and lower two holes through which the pair of coupling rods can respectively penetrate, and both ends of each coupling rod are penetrated through the holes of the pair of columns, and the penetration is performed. The method is characterized in that a pair of struts and each connecting rod are connected at a portion. Also,
The present invention relates to a jig for gripping a weir plate on both sides of a formwork, wherein the jig is longer than the height of the weir plate, and two upper and lower holes through which the connecting rod penetrates at a position higher than the height of the weir plate. Each having a pair of struts for sandwiching the weirs on both sides of the formwork, which is longer than the width of the formwork, and penetrates the upper and lower two holes of the pair of struts, respectively, to form the pair of struts. The present invention also relates to the jig, which includes a pair of connecting rods for fixing the support in a detachable state.

According to the present invention, it is easy to assemble and remove a molding form such as a grout injection form, and it is expected that workability can be improved, and jigs and dams can be reused. It is also economical. The present invention can be applied to any molding form, such as mortar, grout, concrete form, synthetic resin form,
It is particularly suitable for assembling and removing grout-injecting formwork in reinforcement work of buildings with reinforcing steel materials and the like.

The support used in the present invention can be made of any material as long as it has a strength capable of gripping the formwork. Further, the length can be selected to have an appropriate dimension longer than the height of the mold. Further, as the shape of the strut, any shape may be used as long as it can hold the formwork, but for the crest plate or for the round pipe normally interposed between the crest plate and the strut. In order to prevent the pillar from slipping, it is preferable to use a material having a shape such as a groove, a lip groove, an L-shape, or an H-shape, in addition to a square member or a square pipe, so as not to slip.

As the connecting rod used in the present invention, any rod can be used as long as the pair of columns can be widened at a fixed interval longer than the width of the formwork. In addition, if the connecting rod has at least both ends threaded, the nut and the washer alone can be used to connect and remove the column having the two upper and lower holes, which facilitates the assembly and removal of the mold, which is preferable. In this case, the connecting rod may be a full screw bolt.

Further, in the connection between the connecting rod and the column in the present invention, the connection at the upper ends of the pair of columns is stressed from inside to outside, and the connection at the lower portion is stressed from outside to inside. By doing so, since the struts press the weir, the formwork can be gripped more reliably, which is more preferable. In this embodiment, it is preferable that the coupling at the upper ends of the pair of columns is fixed with a nut and a washer from the inside of each column, and the coupling at the lower portion is fixed with a nut and a washer from the outside. With this configuration, the width of the form is performed by the connecting rods connected at each upper end of the pair of columns, and the form is tightened by the connecting rods connected at each lower portion. Because it is effective.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, one embodiment of the present invention will be described with reference to the drawings. However, this is merely for the purpose of describing the present invention in a more understandable manner. Needless to say, it is not a limitation. The jig shown in FIGS. 1, 2 and 3 of the present invention is an embodiment of a jig for a mold according to the present invention. The procedure for fixing and removing the mold using such a jig will be described below. 1) As shown in FIG. 2, in consideration of the width of the mold, a pair of connecting rods 2 a and 2 b composed of all screw bolts are previously assembled to the pair of columns 1 a and 1 b with the washer 4 and the nut 3. . At that time, the nuts 3 of the full screw bolt 2a
The distance between the pair of columns 1a and 1b is adjusted from the inside of each of the columns to substantially set the width of the mold. 2) As shown in FIG. 3, the assembled jig is positioned so as to sandwich the dams 6, 6 of the form via the round pipe 8 (flap). 3) Next, the nuts 3, 3 of the connecting rod 2b are connected to the pair of columns 1
The work of fixing the formwork is completed by clamping the dam 6 from the outside of each of the a and 1b. 4) Next, when removing the formwork, the full screw bolt 2
The jig is removed by loosening the nut 3 of b. This jig can be used again for the next operation.

[0010]

The fixture of the present invention does not require the use of a conventional fixture such as a separator, is reusable, and the assembling and removing operations of the mold are reduced. It is extremely economical because the efficiency is remarkably improved as compared with the conventional one.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mold jig according to one embodiment of the present invention.

FIG. 2 is a front view of a mold jig which is one embodiment of the present invention.

FIG. 3 is a view showing attachment of a jig for a form according to one embodiment of the present invention for gripping a form for injecting a graft in reinforcement work of a building with a reinforcing steel material.

FIG. 4 is a diagram showing attachment of a conventional mold jig.

FIG. 5 is an overall view showing a state in which a mold for grafting is fixed in a reinforcing work of a building with a reinforcing steel material using a jig for a mold according to one embodiment of the present invention.

FIG. 6 is an enlarged view of a mounting portion of the conventional mold jig shown in FIG.

[Explanation of symbols]

 1a, 1b ... Prop 2a, 2b ... Connecting rod 3 ... Nut 4 ... Washer 6 ... Weir board 8 ... Round pipe 9 ... Separator 10 ... Cone 11 ... Form tie 12 ... Washer 13 ... Tightening nut

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E04G 9/00 101 E04G 17/075

Claims (11)

(57) [Claims] 1. A method of gripping a weir on both sides of a form by a pair of struts and a pair of connecting rods, wherein the pair of struts are leaned against the dams on both sides,
Both ends of one connecting rod are detachably connected to the respective upper ends of the pair of columns, and both ends of the other connecting rod are below the upper end and above the height of the formwork. By being connected to the pair of columns in a removable manner at the site,
The pair of struts are fixed with the crests on both sides sandwiched therebetween, and each of the pair of struts has upper and lower two holes, through which the pair of connecting rods can respectively penetrate, at the upper portions thereof. The above method, wherein both ends of the connecting rod are penetrated through holes of the pair of columns, and the pair of columns and each of the connecting rods are connected at the penetrating portions. 2. The method according to claim 1, wherein the pair of struts are made of a square member, a square pipe, or a member having a cross-sectional shape of a groove, a lip groove, an L-shape, or an H-shape. 3. The connecting rod is characterized in that at least both ends of the connecting rod are threaded or full screw bolts, and both ends of the connecting rod are passed through holes of a pair of pillars and then fixed with nuts. The method according to claim 1 or 2, wherein 4. A pair of struts are connected to each other by applying a stress from the inside to the outside at each upper end of the pair of struts and a stress from the outside to the inside at each lower portion. Characterized by pressing from both sides,
The method according to claim 1. 5. A joint at each upper end of a pair of columns is fixed by a nut from the inside of each column, and a coupling at each lower portion is made by fixing a nut from the outside of each column. The method according to claim 4, characterized in that: 6. The method according to claim 1, wherein the mold is a grout injection mold. 7. A jig for gripping a weir plate on both sides of a formwork, the jig being longer than the height of the weir plate, and having two connecting bars penetrating at a position higher than the height of the weir plate. A pair of struts each having a hole for sandwiching the weirs on both sides of the formwork, the pair of struts being longer than the width of the formwork, and passing through the upper and lower two holes of the pair of struts, respectively; The jig comprising a pair of connecting rods for fixing the supporting column in a detachable state. 8. The jig according to claim 7, wherein the pair of pillars is made of a square material, a square pipe, or a material having a cross-sectional shape of a groove, a lip groove, an L shape, or an H shape. . 9. The jig according to claim 7, wherein at least both ends of the connecting rod are threaded. 10. The jig according to claim 7, wherein the connecting rod is a full screw bolt. 11. The jig according to claim 7, wherein the mold is a grout injection mold.