JPH0446010Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is based on a structure in which reinforcing bars (main reinforcing bars), which are placed perpendicularly to the shaped steel and reinforced in a direction parallel to the shaped steel that constitutes the framework of the beam, are suspended at a predetermined height. This invention relates to a reinforcing bar support system.

The applicant previously proposed a structure of this type of reinforcing bar support system consisting of hairpins arranged on the steel moldings and fixing hardware for fixing the hairpins on the molding steel. (See Publication No. 29453). This reinforcing bar support device proposed by the applicant can easily, stably and reliably fix the hairpins on the shaped steel, and also allows the hairpins to slide appropriately in the direction of the beam width in the fixed state, preventing misalignment of the steel beam core. However, since the hairpins are in the shape of a solid round bar and have a large weight burden, they require considerable effort when arranging the reinforcement.
Since the hairpins roll on the upper end flange, there is an inconvenience in that when fixing the hairpins, it is necessary to place a hand on the hairpins to prevent them from rolling.

The reinforcing bar support device of the present invention is a reinforcing bar support that is placed on the upper surface of the upper end flange b of a shaped steel a constituting the frame of a beam in a direction transverse to the shaped steel a, and whose both ends extend outward from the upper end flange b. It consists of a pedestal A and a fixing hardware B for fixing the pedestal B to the flange B surface at the upper end when the pedestal B is placed.

The reinforcing bar support pedestal A has three parallel horizontal rods 1, 1', and 1' arranged to occupy each corner of an isosceles triangle, and an appropriate interval in the length direction. The horizontal rods 1, 1', 1' are connected and integrated at each corner, and are assembled from frame rods 2, which have a substantially triangular shape from the front or a shape similar to this. From both sides of the lower end of the longitudinally central portion of this pedestal A, extending outwards are extending rod portions 3 having locking portions 3a projecting upwardly at their tips. The figure shows a case in which three overhanging rod portions 3 are formed at appropriate intervals in the length direction. There should be at least one of each. Further, although the drawing shows a case in which the overhanging rod portions 3 are formed at both ends of a reinforcing rod 7 disposed in the center, the reinforcing rod 7 does not necessarily need to be provided. When such reinforcing rods 7 are omitted, overhanging rod portions 3, 3 may be formed at the horizontal leg portions 2a, 2a at the lower ends of both side rods of the frame rod 2. The horizontal rods 1, 1', 1', the frame rod 2, and the reinforcing rod 7 that constitute such a pedestal A are generally made of iron wire, and their respective intersections are fixed by welding.

On the other hand, the fixed hardware B is bent from a single iron wire rod into a U-shape in plan, and there is a gap between the rods 4 and 4 on both sides that is larger than the distance between the horizontal rods 1' and 1' of the pedestal A. , an interval smaller than the opposing interval in the width direction of the tip locking parts 3a, 3a is formed. Furthermore, a hook portion 5 is bent at the connected end side of the both rods 4, 4 and is held at the other end side of the upper end flange b at each of the non-connected ends. Locking portions 6, 6 that are locked against a spring are connected, and the locking portion 6 is composed of, for example, a hanging portion 6a and an inwardly curved portion 6b continuous to the lower end of the hanging portion 6a.

The reinforcing bar support device of the present invention uses fixing hardware B to fix a pedestal A placed on the upper end flange b surface of a molded steel A in a direction perpendicular thereto. , 4 is the horizontal rod 1' of pedestal A,
Since the spacing is larger than the spacing of 1', for example, as shown by the imaginary lines in FIG.
By passing the hook part 5 on the coupling end side under the lower end of the pedestal A while sandwiching the pedestal A between the two, the hook part 5 can be locked to one end side of the upper end flange b. After locking, when the fixed hardware B is tilted about the hook portion 5 and brought to the horizontal position shown by the solid line in FIG. Since the spacing is smaller than the opposing spacing in the width direction, the overhanging rod portions 3 are pressed down from above as shown in Fig. 3, and in this state, the non-coupled end side Locking part 6,
The pedestal A can be fixed to the surface of the upper end flange b by pushing it apart and locking it to the other end side of the upper end flange b against the retention elasticity. In this fixed state, the pedestal A is simply held down by its overhanging rod portions 3, so if you push one end of its length in the direction you want to move, the pedestal A slides lengthwise. Therefore, by sliding the pedestal A in this manner, the width of the left and right overhangs can be freely adjusted.

In this way, in the present invention, the pedestal A placed on the upper end flange b surface of the shaped steel a can be fixed stably, reliably, and slidably using the fixing hardware B. In the design, we used a triangular prism-shaped support made from wire rods as the pedestal A, which is much lighter than the conventional use of solid round bar-shaped hairpins, and significantly reduces the labor during reinforcement work. In addition to being triangular prism-shaped, it can be placed stably and reliably on the upper end flange B surface, eliminating the need to place your hands on it to prevent it from rolling, and eliminating the need for fixing work using fixing hardware B. This can be significantly simplified, and the work of placing and fixing the cradle A in this way is often dangerous at high places, so this reduction in weight and simplification of the work improves work safety and work efficiency. can achieve improvements in

[Brief explanation of the drawing]

Figure 1 is a perspective view of each part showing an embodiment of the device of the present invention, Figure 2 is a side view of the pedestal shown in Figure 1, and Figure 3 is the device of the present invention shown in Figure 1. FIG. 4 is a front view of the same. In the figure, A is the pedestal, 1 and 1' are the horizontal rods, and 2
3 is a frame rod, 3 is an overhanging rod portion, 3a is a locking portion, B is a fixing fitting, 4 is a side rod, 5 is a hook portion, 6 is a locking portion,
7' and 7 are reinforcing rods.

Claims (1)

[Scope of utility model registration request] A reinforcing bar cradle pedestal A is placed on the upper surface of the upper end flange b of the shaped steel a constituting the framework of the beam in a direction transverse to the shaped steel a, and has both ends extending outward from the upper end flange b; In a reinforcing bar holder device consisting of fixing hardware B that fixes the pedestal A to the upper end flange b side, the pedestal A has three parallel horizontal rods arranged so as to occupy each corner of an isosceles triangle. 1 and 1′,
1', and are arranged in parallel at appropriate intervals in the length direction, and are approximately triangular in front, connecting and integrating the horizontal rods 1 and 1' and 1', 1' at each corner. It is assembled from a frame rod 2 having a similar shape, and extends outward from both sides of the lower end of the longitudinally central portion of the pedestal A, and has a locking portion 3a that protrudes upward at the tip.
The overhanging rod portions 3 each have an overhang, while the fixed hardware B is bent from a single wire into a U-shape in plan, and between the rods 4 on both sides, the horizontal rod 1 A gap is formed that is larger than the gap between 1' and 1' and smaller than the opposing gap in the width direction of the end locking part 3a of the overhanging rod part 3, and at the connecting end side of the horizontal rods 4, 4. , a hook portion 5 is connected to one end of the upper end flange b, and locking portions 6, 6 which are connected to the other end of the upper end flange b against a retaining spring are connected to each of the non-connected ends. A reinforcing bar support device characterized by: