JPH0622455U - Spacers for concrete formwork panels - Google Patents

Abstract

(57) [Summary] [Purpose] The work of inserting the formwork binding separator can be made quick and easy, and this work can be done by one unskilled worker, improving the work efficiency of the formwork of construction work and lacking skilled workmanship. The purpose is to respond. [Structure] A weir plate surface A3 and its back surface are parallel to each other, and a circular separator C for binding the formwork is formed at appropriate intervals over the above-mentioned weir plate surface A3 and back surface A7 of a hollow or solid bar material. A through hole A1 for inserting the through hole was formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a spacer for concrete formwork panels to be installed between adjacent concrete formwork panels when connecting concrete formwork panels having reinforcing bars at least on the outer periphery of a plywood, steel plate, or wire mesh It is about.

[0002]

[Prior art]

 Generally, a concrete formwork panel is made by joining reinforcing bars made of wood or steel to the outer circumference and the length and width of a weir board made of plywood, steel plate, or wire mesh. One example is shown in FIG. 18 and FIG. , And how to assemble them. In general, a steel circular separator (hereinafter referred to as "round separator") C and a tightening metal (foam tie) B are used to determine the width between mutually facing formwork panels. For the plywood weir plate D1, through holes D2 for round separation are formed at appropriate intervals at the construction site, and the round separation C is inserted through the through holes D2 for round separation of the opposite formwork panel D, and further. Then, the foam tie body B 1 is screwed and fixed to the screw portions C1 at both ends of the round separator C from the outside of both form panel D. At this time, a hexagon nut C2 is previously screwed into the threaded portion C1 of the round separator, and the hexagon nut C2 holds the space between the dam plates D1 of both form panels D. Therefore, the weir plate D1 is sandwiched by the hexagon nut C2 and the foam tie body B1 at both ends of the round separator C, and the width determination between both form panel is completed. Further, the steel pipe end thickness E 1 is fixed by the washer B2 of the form tie B so that the mold is not deformed by the lateral pressure at the time of placing concrete.

As shown in FIGS. 18 and 19, the concrete structure has rebars (beam main bars F1 and stir bars F2 in FIGS. 18 and 19) that are almost always present. Reinforcing bars are arranged at intervals of about 150 mm even in wide places, and the distance between the reinforcing bar and the formwork is generally about 50 to 60 mm. The inside of the formwork (concrete is placed and filled). It is not possible for a worker to enter the part to be worked).

Therefore, the assembling of the formwork is a work on both sides of the rebar. At that time, the work of inserting the round separator C into the through hole D2 is performed by a group of two people. The method will be described below with reference to FIGS. First, a through hole D2 for a round separator is preliminarily formed in the barrier plate D1 of the form panel D, and a hexagon nut C2 is previously fitted in the threaded portion C1 at both ends of the round separator C. Next, as shown in FIG. 20, the worker a supports one mold panel D, and the worker a inserts the round separator C into the through hole D2 for the round separator, and at the same time, the worker The foam tie body B1 is screwed onto the threaded portion C1 of C, and the dam plate D1 is sandwiched and fixed. All the planned round separators and foam ties should be attached in this way to the single form panel shown in FIG.

Next, as shown in FIG. 21, a worker A supports a mold panel D on which one of the round separ C and the foam tie body B1 has been attached, while supporting the form tie already screwed onto the round separ C. By manipulating the tip of the main body B1, the circular separator C is inserted into the through hole D2 'of the other formwork panel D'supported by the worker a, and at the same time, the worker a screw of the circular separator C. The foam tie body B1 ′ is screwed and fixed to the portion C1. After that, the reinforcing steel pipe end thickness E shown in Fig. 15 is tightened and fixed with the screw parts at the front ends of the foam tie bodies B1 and B1 ', and the attached washers B2 and B2' and nuts B3 and B3 'to complete the assembly. To do.

Further, as shown in FIG. 19, the adjacent form panel panels are connected to each other by fastening the reinforcing bars D2 on the outer periphery of the form panel together.

[0007]

[Problems to be solved by the device]

 By the way, in the above-mentioned method of assembling the form panel, there were the following problems at the time of inserting the round separator. As shown in FIG. 20 and FIG. 21, when inserting the round separator C into the through holes D2 and D2 ′ for round separator, the workers a and a are divided into both sides of the reinforced bar and the width is Work must be carried while supporting the wide and heavy formwork panels D and D '. In addition, since the general wooden formwork panel has a width of 900 x height of 1,200 x thickness of 62 mm and a weight of 20 kg or more, including the reinforcing bars, the other formwork panel D'shown in Fig. 21 is used. At the time of inserting the round sepa C into the mold, one tip of the round sepa C protruding in a comb shape is guided to the one mold panel D, and is inserted into the through hole D2 'of the other mold panel D'. It can be said that it is a difficult technique.

The present invention is intended to solve the above-mentioned problems, and an object thereof is to allow a single person to insert a separator for forming a formwork, and it is extremely difficult for a group of two people to perform the work. The goal is to make it possible to perform separator insertion work that is extremely efficient, quick, and even without skilled skills, to improve the work efficiency of formwork in construction work and to cope with shortage of skilled workers.

[0009]

[Means for Solving the Problems]

 The present invention relates to a means for a spacer for a concrete formwork panel for solving the above-mentioned problems, which means that at least the weir plate surface and its back surface are parallel to each other, and a solid or solid rod is used. Through holes are formed in the barrier plate surface and the back surface of the material at appropriate intervals so that the separators for binding the formwork are inserted therethrough. Further, this means can also use a bar material having a "U" -shaped cross section without providing the back surface of the spacer for the concrete formwork panel, or at least the spacer for the concrete formwork panel. It is desirable to form a through hole of the connection bottle on the surface of the dam plate formed of wood with a reinforcing steel plate fixed thereto, or on the surface in contact with the end surfaces of adjacent formwork panels and on the back surface thereof.

[0010]

[Action]

 The spacers for concrete formwork panels of the present invention fix the spacers for concrete formwork panels by inserting the formwork binding separators into the through holes on both sides of the installed rebar without being disturbed by the formwork panels. It is possible to attach a steel pipe end with a form tie to this formwork binding separator, and to support the formwork panel with this steel pipe end. Then, by making the cross-section into a "U" shape or fixing a steel plate to at least the dam plate surface of wood, the weight of this concrete formwork panel spacer can be reduced, and the end face of the adjacent formwork panel and the penetration of the bottle can be reduced. By inserting the bottle into the hole, the end face of the mold is fixed.

[0011]

【Example】

 Embodiments corresponding to claims 1 and 3 of the present invention will be described with reference to FIGS. 1 to 6. The same parts as those of the above-mentioned conventional example are designated by the same reference numerals. First, in FIG. 1, A is a spacer for a concrete formwork panel made of a steel pipe having a rectangular cross section, A1 is a through hole for round separator provided in this, A2 is a through hole for connection with the formwork panel D, and A3 is a weir. A weir plate surface that is flush with the plate D1 and A4 is a connection surface with the form panel D.

As shown in FIGS. 4 to 6, the spacer A for concrete formwork panel is built on both sides of the installed reinforcing bars (consisting of the beam main bars F1 and the stir bars F2), and the round separator C Is inserted into the circular separator through hole A1 and is fixed at a predetermined position. As shown in FIG. 17, this work is carried out by the worker A using this spacer A for concrete formwork panel with one hand. It is possible to guide the front end of the round separator C with the other one hand 2 of the same worker a and insert it into the through hole A1 for the round separator, so that the inserting work of the circle separator C can be done by one person. .

After attaching the steel pipe end thickness E with the form tie B to the round separator C fixing the spacer A for the concrete formwork panel thus constructed, the same as the conventional method Assembling the form panel D together with the form panel D is carried out in exactly the same manner as the conventional method. Assembling the form panel D and the spacer A for concrete form panel is as shown in FIG. , Connection bolts and nuts G.

Next, an embodiment corresponding to claim 2 of the present invention will be described with reference to FIGS. 7 to 9. This embodiment, as shown in FIG. 7 to FIG. This is a concrete formwork panel spacer A in which the back surface is removed from the concrete formwork panel spacer of the example, and the cross section is a "U" -shaped rod. The concrete formwork panel spacer A is provided with a through hole A1 for a circular separator C and a through hole A2 for connection to the formwork panel D as in the previous embodiment shown in FIG. The back face is removed and the cross-section is "U" shaped to reduce the weight of the spacer for concrete form panel, and the construction state is different from that of the previous embodiment shown in Figs. is not.

Next, an embodiment corresponding to claim 3 of the present invention will be described with reference to FIGS. 10 to 12. In this embodiment, as shown in FIG. 10, a weir plate surface A3 of a wooden rail A5 is shown. In addition, it is a spacer A for a composite concrete formwork panel to which a reinforcing steel plate A6 is fixed. Then, the concrete formwork panel spacer A is provided with a through hole A1 for a circular separator C and a through hole A2 for connection with the formwork panel D, as in the first embodiment shown in FIG. The space A for the concrete formwork panel is lightened by the wooden crosspiece A5, and the wooden crosspiece A5 is reinforced by the reinforcing steel plate A6. The construction state is the same as that of the first embodiment. 4 to 6 are the same.

Further, another embodiment corresponding to claims 1 and 4 will be described with reference to FIGS. 13 to 16. In this embodiment, the connection on the left and right side surfaces adjacent to the barrier plate surface A3 is performed. Side A4 is a symmetrical trapezoidal cross-section trapezoidal concrete formwork panel spacer A that has a symmetrical shape. The hole A1 and the through holes A2 for connecting to the form panel D on the left and right side surfaces are not different from the above-described embodiments shown in FIGS. 1 and 10.

In this embodiment, the construction is performed in the same manner as in the previous respective embodiments, but the form panels D on the left and right sides of the constructed concrete form panel panel spacer A are on the same plane. However, the next formwork panel D will also be tilted in the same manner, and the constructed formwork D as a whole will become one curved formwork, which requires concrete construction. It is used as the spacer A for the formwork panel.

[0018]

[Effect of device]

 As explained above, the spacer for concrete formwork panel of the present invention allows one person to insert the separator for mold form connection, and the separator insertion work, which was extremely difficult even with one group of two in the past, is quick. Since it is easy and can be performed without skilled skills, it is possible to improve the work efficiency of formwork in construction work and to cope with lack of skilled workers.

In addition, the method of assembling the formwork using the spacer for the concrete formwork panel of the present invention is almost the same as the method of assembling the conventional formwork panel, and additionally, the round separator, the form tie, the steel pipe end piece, Since conventional form members can be used as they are, such as form panels, it is possible to reduce the risk of form contractors, such as avoiding skilled workers and purchasing new materials, and are easily adopted.

[Brief description of drawings]

FIG. 1 is a perspective view of a spacer for a concrete formwork panel according to an embodiment of the present invention.

FIG. 2 is a cross section taken along line 1-1 in FIG.

3 is a cross section taken along line 2-2 in FIG.

FIG. 4 shows a construction cross section of the embodiment of FIG.

5 shows a cross section taken along line 1-1 in FIG.

6 shows a cross section taken along line 2-2 in FIG.

FIG. 7 is a perspective view of a spacer for a concrete formwork panel according to an embodiment of the present invention.

FIG. 8 is a cross section taken along line 1-1 in FIG.

9 is a cross section taken along line 2-2 in FIG.

FIG. 10 is a perspective view of a concrete formwork panel spacer according to an embodiment of the present invention.

11 shows a cross section taken along line 1-1 in FIG.

12 shows a cross section taken along line 2-2 in FIG.

FIG. 13 is a perspective view of a concrete formwork panel spacer according to an embodiment of the present invention.

14 shows a cross section taken along line 1-1 in FIG.

15 is a cross section taken along line 2-2 in FIG.

16 shows a construction cross section of the embodiment of FIG.

FIG. 17 shows a method of inserting a separator using the concrete formwork panel spacer of the present invention.

FIG. 18 is a sectional view of a conventional form panel assembly.

19 shows a cross section taken along line 1-1 in FIG.

FIG. 20 shows a method of inserting a separator in a conventional method of assembling a form panel.

FIG. 21 is similar to FIG.

[Explanation of symbols]

 A Spacer for concrete formwork panel A1 Through hole for round separator A2 Through hole for connection A3 Weir plate surface A4 Connection surface A5 Wooden crosspiece A6 Reinforcing steel plate A7 Back surface B Form tie C Round separator (Round separator) D Form E Steel pipe Edge F F Reinforcing bar G Connection bolts and nuts

Claims (4)

[Scope of utility model registration request] 1. A formwork binding separator is inserted at an appropriate interval over at least the weir plate surface and the back surface of a hollow or solid bar member in which at least the weir plate surface and its back surface are parallel to each other. A spacer for a concrete formwork panel, which has a through hole. 2. The spacer for a concrete formwork panel according to claim 1, wherein the back-facing surface of the spacer for a concrete formwork panel is not provided, and a cross section thereof has a “U” shape. 3. The spacer for a concrete formwork panel according to claim 1, wherein the spacer for the concrete formwork panel is formed of wood having a reinforcing steel plate fixed to at least the dam plate surface. 4. A concrete formwork panel according to claim 1, wherein a surface of the concrete formwork panel adjacent to each other is in contact with an end surface of the concrete formwork panel and a through hole of a connection bottle is formed in a back surface thereof. spacer.