JPH0596309U - Thick wood - Google Patents

Abstract

(57) [Summary] [Purpose] A thick piece of timber used as a supporting material for the formwork during the assembling of the formwork in various concrete pouring works, and can be expanded and contracted according to the situation at the site. [Structure] A pair of rectangular cylinders (A), (B) are opposed to each other
(11), (11) abutting each other, a groove (15) extending along the center line direction is formed on the surface (11) of one of the rectangular tubular bodies (A), and its cross-sectional shape is The bottom side portion (15b) of the concave groove (15) is formed larger than the inlet side portion (15a), and the other rectangular tubular body (B)
A ridge (16) extending along the centerline direction is formed on the surface (11) of the ridge, and the cross-sectional shape of the ridge (16) is the tip portion (16) of the ridge (16).
The width of b) is formed to be larger than the width of the root side portion (16a), and these ridges (16) and concave grooves (15) are fitted to each other, and the surface (11),
The structure that (11) is restricted from moving in the direction of separation and can freely slide in the longitudinal direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slab used for assembling a formwork in various concrete placing works.

[0002]

[Prior Art]

 Generally, in concrete pouring work, as shown in Fig. 3, the face plates (21) of the formwork (20), (20) are opposed to each other, and if there is a side edge or rib portion rising from the face plate, the rear face thereof. , Or if there is no rib as shown in the figure, directly to the back of the face plate, only vertical edge thick material (10a) or horizontal edge thick material (10b), or vertical and horizontal end thick material (10a), (10b) Are applied in a cross pattern. Then, the separator (30) provided between the face plates (21) and (21) and the fastening rod (32) arranged in line with the separator (30) and arranged on the outside of the face plate are, for example, bolt-shaped pieces (31). Are connected to each other via. In the wedge hole (33) of the fastening rod that protrudes outward from the outer surface of the stub material, the wedge (34) slides on the washer (35) abutting the outer surface of the stub material (10). ) Is driven. As a result, a plurality of adjacent formwork (20) are mutually immovably connected to each other, and their face plates (21) form a continuous concrete placing surface.

However, in an actual construction site, as shown in FIG. 2, the lateral end thick material (10b) does not reach the end (E) of the formwork (20) located at the end, and the end formwork It can be seen that there is a halfway situation where there is no horizontal edge thick material in the part (Y) on the edge (E) side. In such a case, it is necessary to perform a troublesome work of supplementing the horizontal edge thick material of a normal size from the material storage area and firmly connecting it to the horizontal edge thick material that reaches halfway in several places. It was This also applies to the case of stacking formwork in the vertical direction.

[0004]

[Problems to be solved by the device]

 Therefore, in order to solve the problems of the conventional concrete pouring work, the present invention does not require the work of adding a horizontal or vertical end thick material at the end of the formwork, and expands and contracts. The purpose of this is to improve the efficiency of mold assembly work by providing flexible thick material.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object will be described with reference to FIG. 1 corresponding to the embodiment. In the thick end material of the present invention, a pair of rectangular cylinders (A) and (B) are provided. Surfaces (11), (11) facing each other are in contact with each other, and a groove (15) extending along the center line direction is formed on the surface (11) of one of the rectangular cylinders (A). The cross-sectional shape is such that the bottom side portion (15b) of the concave groove (15) is formed larger than the entrance side portion (15a), and the surface (11) of the other rectangular tubular body (B) extends in the center line direction. A ridge (16) extending along the ridge (16) is formed, and its cross-sectional shape is formed such that the width of the tip portion (16b) of the ridge (16) is larger than the width of the root side portion (16a). The ridge (16) and the groove (15) are fitted to each other, the movement of the surfaces (11) and (11) in the direction of separation is restricted, and the sliding in the longitudinal direction is free. Is.

[0006] The concrete shape of the concave groove (15) consisting of the small-diameter inlet side portion (15a) and the large-diameter bottom side portion (15b), and therefore the complementary wide end portion (16b). The specific shape of the ridge (16) consisting of the small width side root portion (16a) and the ridge (16a) does not have to be any particular shape as long as the two are inseparable and slidably fitted. As an example, in the case of a groove, for example, the bottom side portion (15b) having a rectangular cross section is connected to the surface (11) of the rectangular tubular body (A) or (B) through the neck side inlet side portion (15a). The shape can be a series of. Alternatively, it may be a dovetail groove (Hatoo shape) having a trapezoidal cross section.

Then, one of the sliding contact surfaces (11), (11) of the pair of double-sided tubular bodies (A), (B) is provided with the above-mentioned groove and ridge, and the other corresponds to this. It may be provided with a convex line and a concave groove, and the cross-sectional shapes may be symmetrical to each other, or may be an asymmetrical relationship in which only the concave groove is provided on one side and only the convex line is provided on the other side.

[0008]

[Action]

 Since the edge lumber of the present invention has such a configuration, if a situation occurs in which the longitudinal or horizontal edge lumber does not reach the end or the formwork in front of it, as described above. Before the final tightening with the fastening rod and the wedge, while sliding one pair of square cylinders (A) or (B) with respect to the other square cylinder (B) or (A) It may be used by a method of pulling out, making the edge thick material as if it was stretched out, and then performing final tightening.

Even in such a stretched position of the vertical or horizontal end thick material, since the double-sided tubular body must be pinched between the washer and the inner cross end thick material, the concave groove is formed. In addition, it is necessary to mount the ridges so that both side surfaces (both sides) adjacent to one surface (one side in cross section) on which the ridges are formed are in contact with the other thick timber and the washer that intersect with them.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In the first embodiment shown in FIGS. 1 to 3, as an example, a pair of rectangular cylinders (A) and (B) of the same length (for example, several meters) manufactured by drawing and cutting an aluminum material are combined. There is. These rectangular cylinders are in close contact with each other on the surface (11), (11) in the direction of the center line, and the groove (15) in the direction of the center line of the cylinder is formed on the surface (11) of one of the square cylinders (A). And the ridge (16) are formed in parallel with each other, and the ridge (16) and the groove (15) in the direction of the center line of the rectangular cylinder are similarly formed on the surface (11) of the other rectangular cylinder (B). Are formed parallel to each other. Then, in this close contact state, the former convex stripe (16) fits into the former concave groove (15) and the former convex stripe (16) fits into the latter concave groove (15). Are symmetrical.

The shapes of the groove and the ridge in this embodiment are as follows. That is, the inner diameter of the bottom side portion (15b) of the groove (15) located on the side separated from the surface (11) in the cross section is larger than the inner diameter of the inlet side portion (15a). Correspondingly, the width of the tip end portion (16b) of the ridge (16) located on the side distant from the surface is made larger than the width of the root side portion (16a). The concave groove (15) in this example has a shape in which the bottom side portion (15b) having a rectangular cross section is connected to the surface (11) of the rectangular tubular body through the neck side inlet side portion (15a), and similarly the convex groove is formed. The strip (16) has a shape in which the distal end portion (16b) having a rectangular cross section is connected to the surface (11) of the rectangular cylinder through the neck-side base portion (15a).

As described above, the tip end portion (16b) of the ridge (16) is fitted into the bottom side portion (15b) of the concave groove (15), and the concave groove inlet side portion (15a) is Since the ridges are restrained so as not to be separated from the groove, the above-mentioned rectangular prisms (A) and (B) can expand and contract while sliding relative to each other. Therefore, as shown in FIG. 3, one thick edge material of the present invention is arranged above and below the fastening rod (32) as a lateral edge thick material, and as shown in FIG. When the thick material (10b) is interrupted, one of the square tubular bodies (A) or (B) in the lateral edge thick material may be pulled out as described above. As a result, the tip of the horizontal edge thick material reaches the farthest vertical edge thick material (10 a), so that all the formwork (20), (20) can be assembled in a regular state. ..

In the second embodiment shown in FIG. 4, only one groove (15) is provided in one rectangular tube (A), and only the ridge (16) is provided in the other rectangular tube (B). Although formed respectively, the other points are similar to those of the first embodiment. That is, also in this example, no unevenness is formed on the surface (14) facing the surfaces (12) and (13) adjacent to the surface (11) on which the groove (15) or the ridge (16) is formed. Since it is not a flat surface, it can be used in the same manner as in the first embodiment. However, since it is an asymmetric type, it is necessary to facilitate two types of rectangular cylinders, but since it has a simpler cross-sectional shape than that of the first embodiment, it is easy to manufacture by drawing.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and is provided with the above-mentioned constituent elements of the present invention. It can be carried out by appropriately modifying it within a range that achieves the object of (1) and has the effects described below. For example, the concave groove may be a “dove groove”, and the prismatic body may be replaced with the prismatic body.

[0018]

EFFECTS OF THE INVENTION As is apparent from the above description, according to the present invention, a pair of square tubular bodies (or prismatic bodies) are slidable with respect to each other, and as a whole, can be expanded and contracted. Since the shortage of the thick timber at the end of the formwork construction work can be immediately solved without the need to add the thick timber, it contributes greatly to the improvement of the efficiency of the construction work.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment.

FIG. 2 is a front view showing the same usage state.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a side view showing a second embodiment.

[Explanation of symbols]

 (11) Surface in the direction of the center line (15) Groove (15a) Entrance side part (15b) Bottom side part (16) Convex ridge (16a) Root side part (16b) Tip part (A) Square tube (B) Square tube

Claims (1)

[Scope of utility model registration request] 1. A pair of rectangular cylinders (A), (B) are in contact with each other at surfaces (11), (11) facing each other, and one prismatic cylinder (A)
The surface (11) of the groove (15) is formed with a groove (15) extending along the center line direction, the cross-sectional shape of which is the bottom side portion (15) of the groove (15).
b) is formed to be larger than the inlet side portion (15a), and the ridge (1) extending along the center line direction is formed on the surface (11) of the other rectangular tubular body (B).
6) is formed such that the width of the tip portion (16b) of the ridge (16) is larger than the width of the root side portion (16a), and these ridges (16) and the groove are formed. (15) and the
A thick piece of material that is structured such that movements of (11) and (11) in the direction of separation are restrained and sliding in the longitudinal direction is free.