JP3029332B2 - Reinforcement cage structure and spacer used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a reinforcing cage which is embedded in a product such as a concrete product for reinforcement, and a spacer used therein.
The present invention relates to an improvement in a reinforcing bar cage structure in which upper and lower portions of a piece of reinforcing bar mats are connected in parallel at predetermined intervals by an upper spacer and a lower spacer, respectively, and a spacer used therein.

[0002]

2. Description of the Related Art Concrete products, for example, lightweight aerated concrete products that are cured in an autoclave (so-called AL)
C products), etc., are cage-shaped reinforced cages (reinforced steel cages)
Is buried and reinforced. Such a reinforcing cage is usually set at a predetermined position of a mold frame by using a set rod having a flat tip at the time of molding.

[0005] For example, FIG. 11 is a perspective view showing a reinforcing cage used sideways when manufacturing an ALC plate. Reinforcing bar 1 is composed of a vertical bar (main bar) 2 and a horizontal bar (secondary bar) orthogonal thereto.
3 are arranged opposite to each other, and these are connected to each other by an upper spacer 5 and a lower spacer 6.
Thus, they are connected in parallel at predetermined intervals to form a basket. Then, as shown in FIGS. 12 and 13, the upper spacer 5 has a rectangular insertion hole 7 in wide (interval b _1), a rectangular insertion lower spacer 6 is a narrow than (interval b ₂₎ It has a hole 8. The narrow width of the insertion hole 8 is slightly larger than the flat width of the flat portion at the tip of the set rod inserted into the hole, as described later.

[0004] The reinforcing braided cage 1 is erected from the state shown in Fig. 11 with its upper spacer 5 side up, is aligned in a large number at predetermined intervals to form a block, and is formed as a reinforcing braided cage block. That is, in order to simultaneously manufacture a plurality of ALC plates using a common forming mold, a method of arranging a large number of reinforcing bar cages 1 necessary for each ALC plate at predetermined intervals to form a reinforcing bar cage block, and then setting the reinforcing bar cage blocks in the forming mold frame. Is generally adopted.

[0005] Conventionally, the block assembly of the reinforcing cage is as follows.
This was done manually as follows. That is,
A large number of reinforcement cages to be blocked are placed on, for example, a carriage having both side plates, and the reinforcement cages are inclined on the both side plates. Further, the required number of set frames are mounted on the side beams of the cart.
Next, a set rod for suspending the reinforcing cage and having a flat engaging portion at the tip is held in one hand, and the set rod is passed through the upper and lower two insertion holes of the set frame from above. On the other hand, the reinforcing cage for inserting the set rod is supported upright under the tip of the set rod with the other hand. Next, the set rod is further lowered to be inserted into the upper spacer and the lower spacer of the reinforcing cage in order. Next, the set rod is rotated by approximately 90 degrees to engage the tip with the insertion hole of the lower spacer.

However, since the positioning must be performed by holding the upper part of the reinforcing cage with one hand and the insertion hole of the lower spacer is narrow as described above, many positioning methods are required. Time is being spent.
According to the working time analysis, it has been found that about 50% of the time is required for the positioning when the set rod is inserted into the insertion hole of the lower spacer. In order to assemble such a reinforcing cage block, a set frame per block is usually 10 pieces.
Since about 15 set rods are used for the frame and each set frame, considerable work is required for the set rod insertion operation.

[0007] In order to solve the above problem, the present inventors have:
Earlier, an efficient reinforcing cage rebar block assembling apparatus was developed and filed (Japanese Patent Application No. 2-152064). Next, this reinforcing bar cage block assembling method will be described with reference to FIGS. FIG. 14 is a perspective view showing a state in which a number of reinforcing cages 1 are aligned at predetermined intervals using an alignment jig. The alignment jig 9 is mounted on an alignment table 10 so as to be fixed or adjustable in relative position. A plurality of alignment guide bars 11 are erected on the alignment jig 9 at predetermined intervals. In addition, alignment jig 9
On the upper side, a plurality of guides 12 are provided at positions corresponding to the alignment guide rods 11.

The guide 12 has a pair of flat plates 13 having an interval slightly larger than the width of the reinforcing cage 1, and the opposing surfaces of the respective flat plates 13 are tapered surfaces whose intervals increase upward. ing. The reinforcing cage 1 is erected so that the insertion hole 8 of the lower spacer 6 is inserted inside the guide 12 as shown in the figure. The center line of the insertion hole 8 is made to coincide with the center line of each flat plate 13, and its long side is arranged parallel to the flat plate 13.

The insertion hole 5 of the upper spacer 6 and the insertion hole 8 of the lower spacer 6 hang and move the reinforcing cage 1, and insert a set rod 14 used to hang the reinforcing cage 1 into the forming mold. In particular, the lower insertion hole 8 also has a function of engaging the set rod 14 so as not to fall off. The set rod 14 is oriented such that the eccentric plane of its tip is parallel to the long side of the insertion hole 8 of the lower spacer 6,
It is inserted into the through hole 7 of the upper spacer 5 and the through hole 8 of the lower spacer 6 of the reinforcing cage 1 standing upright from above.

FIGS. 15 and 16 are a front view and a plan view showing an example of a set rod. Set rod 14 is pipe 1
5 is composed of a set rod body 16 penetrating through the inside and a lever 17 attached to the upper end thereof. Reference numeral 18 denotes a lock hook for preventing the set rod 14 from being pushed upward when the set rod 14 is hung from the set frame. The tip 19 of the set rod 14 is shown in FIG.
As shown in FIG. 18), the flattened reduced portion 20 and the flattened bulging portion 21 further extended therefrom are shown in FIG.
It is composed of

The set rod 14 is inserted into the insertion hole 7 of the upper spacer 5 and the insertion hole 8 of the lower spacer 6 of the reinforcing cage 1 from its tip 19 in the state of being hung on the set frame, and then the lever is released. 17 (FIG. 14) is rotated by 90 degrees, and the bulging part 20 of the tip part 19 is engaged with the insertion hole of the lower spacer 6 as shown in FIG. In this state, the reinforcing cage 1 is engaged so as not to fall off the set rod 14 and can be lifted and moved.

[0012] A large number of reinforcing cages 1 are arranged as shown in FIG.
As shown in FIG. 20, is suspended at a predetermined position in the mold 22 and set to form a reinforcing cage block.
Each set rod 14 is suspended from the upper portion thereof by a common set frame 23 for each row in the width direction of the mold frame 22. At the upper part of the set frame 23, a hanging metal fitting 24 for lifting and moving with a crane or the like is provided.

As described above, the reinforcing braided cage block is formed by the forming mold 2
After being suspended in the mortar 2 and set at a predetermined position, a mortar material is poured into the molding frame 22, and when the mortar material has hardened to some extent, each set rod 14 is turned 90 degrees from the above-described engagement position. Then, the engagement between the distal end portion 19 and the insertion hole 8 of the lower spacer 6 is released. Next, the hanging bracket 24
, Each set frame 23 is lifted, and the set bar 1 is pulled out together with the set frame 23. Finally, the middle part of each reinforcing cage 1 is cut and reinforced by an autoclave or the like to complete the ALC plate.

[0014]

As shown in FIG. 14, when forming a reinforcing braided cage block, a guide 12 is provided on an alignment jig 9, and a set rod 14 is inserted into a narrow insertion hole 8 in the lower spacer 6. To make it easy to insert. However, the method of guiding the set rod by providing a guide on such an alignment jig as previously proposed is a method in which the reinforcing cage is not accurately arranged on the alignment jig, and the insertion hole and the guide of the lower spacer are not provided. However, there is a problem that the relative position of the set is deviated and it is difficult to insert the set rod.

In other words, when the reinforcing cage is not correctly aligned on the alignment jig and has a bias exceeding a predetermined allowable value, the set rod inserted into the reinforcing cage is widened in the upper spacer. There is a considerable allowance for the deviation allowance for the insertion hole, but it is inserted relatively smoothly.However, for the narrow insertion hole of the lower spacer, there is no allowance for the deviation allowance and it descends to the predetermined position. This is because, even though it may not be able to be inserted through the insertion hole.

Therefore, the present invention further improves such a guide method of the set rod, and ensures that the set rod can be securely connected to the lower spacer even when the reinforcing cage is not properly aligned on the alignment jig. It is an object of the present invention to provide a reinforcing cage structure that can be inserted into a narrow insertion hole and a spacer used for the structure.

[0017]

The reinforcing cage structure of the present invention for solving the above-mentioned problems is characterized in that a vertical spacer having a wide and rectangular insertion hole and a lower spacer having a narrow and rectangular insertion hole are provided. This is a reinforcing cage structure in which upper and lower portions of two reinforcing mats formed of a streak and a transverse streak and arranged in parallel at a predetermined interval are connected. A guide is provided which expands in a tapered shape in the direction of the upper spacer from the long edge side of each of the insertion holes of the lower spacer facing each other.

The spacer according to the present invention is a spacer used in the reinforcing cage structure, in particular, a lower spacer, which is connected at right angles between a pair of muscle connected bodies arranged in parallel at a predetermined interval and each muscle connected body. And a pair of guide plates arranged in parallel at predetermined intervals. A rectangular opening is formed by the pair of muscle connecting bodies and the pair of guide plates, and a distance between opposing surfaces of each guide body is tapered from the opening. It is.
The spacer of the present invention can be used as an upper spacer of the reinforcing cage if desired.

The reinforcing cage structure and the spacer used therein according to the present invention can be applied not only to the case where the reinforcing cage assembly device proposed above is used to assemble the block, but also to the case where the reinforcing cage assembly is manually assembled to the block. be able to.

[0020]

In order to insert and insert the set rod into the reinforcing cage of the present invention, a desired number of reinforcing cages are first aligned on an alignment jig. Next, a number of set rods suspended from the set frame at predetermined intervals are lowered, and are sequentially inserted into the insertion holes of the upper spacer and the lower spacer. At this time, since the insertion hole of the upper spacer is wide, even if the alignment position of the reinforcing cage is slightly biased, it can be smoothly inserted as it is.

On the other hand, although the insertion hole of the lower spacer is narrow, a guide plate which expands in a tapered shape in the direction of the upper spacer from the long edge side of each of the insertion holes is provided. Even if there is some deviation, the set rod is smoothly inserted into the insertion hole while its tip end is guided by the inclined surface of the guide plate and flexes. That is, since the upper spacer and the lower spacer located thereunder are mounted coaxially with each other, the tip end of the set rod which is inserted into the insertion hole of the upper spacer and guided by it and descends vertically always becomes the lower spacer. It reaches the position where the insertion hole exists, is guided by the guide plate, and is reliably inserted into the insertion hole.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a reinforcing bar cage structure of the present invention and a spacer used therein. FIG.
1 is a perspective view showing an example of a reinforcing cage structure of the present invention. In the figure, the same portions as those of the reinforcing cage structure of FIG. 14 described above are denoted by the same reference numerals. The difference between the reinforcing cage structure of the present invention shown in FIG. 1 and the conventional reinforcing cage structure of FIG. 14 is the structure of the lower spacer. That is, the lower spacer 30 in the reinforcing muscle cage structure of the present invention is connected at a right angle between a pair of muscle connectors 31 arranged in parallel at a predetermined interval and parallel to each other and arranged in parallel at a predetermined interval. And a pair of guide plates 32.

A rectangular insertion hole 33 is formed by the pair of muscle connecting bodies 31 and the pair of guide plates 32, and the distance between the opposing surfaces of each guide body 32 is set to the length of the insertion hole 3 described above.
3 is tapered. The pair of reinforcing bars 31 connects the corresponding vertical bars 2 of the reinforcing bar mats 4 constituting the reinforcing bar cage 1 by welding. FIG. 1 shows the guide 1 provided on the alignment jig 9 of FIG.
2 does not exist.

FIG. 2 is an enlarged front view showing an example of the lower spacer in FIG. 1, and FIGS. 3 and 4 are a plan view and a side view of FIG. 2, respectively. In these figures, the pair of connectors 31 is made of a round bar such as a bar,
They are arranged in parallel at predetermined intervals. On the other hand, the pair of guide plates 32 are integrally formed by pressing a steel plate having a rectangular insertion hole 33 in the middle part so that the opposing surfaces of the guide plate 32 are tapered from the insertion hole 33. ing.

The integrated guide plate 32 is connected by welding so that the insertion hole 33 is located substantially at the center of each of the connecting members 31 arranged in parallel.
The angle formed by the connecting body 31 and the guide plate 32 is ALC
From the balance between the effect of inhibiting the rise of bubbles generated during plate production and the effect of reinforcing the ALC plate, for example, 4
The range is 0 to 70 degrees, preferably 50 to 65 degrees.

FIG. 5 is an enlarged front view showing another example of the lower spacer, and FIGS. 6 and 7 are a plan view and a side view of FIG. 5, respectively. In these figures, a pair of connecting bodies 31 and a pair of guide plates 32 orthogonal thereto are integrally formed by pressing a steel plate. Note that a reinforcing rib 34 is provided at an outer edge portion of each connecting body 31.

Next, a state in which the set rod is inserted into and engaged with the lower spacer in the reinforcing bar cage structure of FIG. 1 will be described with reference to FIGS. First, as shown in FIG. 8, the set rod 14 is lowered so that the flat surface of the tip 19 is parallel to the long side of the rectangular insertion hole 33 of the lower spacer 30. At this time, even if the distal end portion 19 is slightly biased, the distal end portion 19 contacts one of the inclined surfaces of the guide plate 32 of the lower spacer 30 and is guided to the insertion hole 33 in the central portion. When it is further lowered, the distal end portion 19 is inserted into the insertion hole 33 as shown in FIG. In this state, the insertion of the set rod 14 into the lower spacer 30 is completed.

Next, the lever 17 at the upper end of the set rod (FIG. 1)
When 5) is rotated by 90 degrees, the flat surface of the bulging portion 21 at the distal end portion 19 becomes perpendicular to the long side of the insertion hole 33 as shown in FIG. Engaged. Set the set rod to the lower spacer 3
0, the lever of the set rod 14 is moved to 9
It is sufficient that the set rod is raised by rotating the flat portion of the bulging portion 21 by 0 ° so that the flat surface of the bulging portion 21 is parallel to the long side of the insertion hole 33 and the engagement is released.

[0029]

Since the reinforcing cage structure of the present invention is constructed as described above, the allowable amount of the set rod alignment is greatly increased, and even when the set rod is manually inserted, the work can be performed. Extremely easy. Also, when the reinforcing cage assembly device is used, even when the reinforcing jig is slightly offset on the alignment jig, the guide is guided from the insertion hole of the upper spacer to the insertion hole of the lower spacer located immediately below. The leading end of the set rod is guided while being bent by the guide plate interlocking with the spacer position, and can be reliably inserted into the narrow insertion hole of the lower spacer.

Further, the spacer used for the reinforcing cage structure is configured as described above, so that the set rod can be reliably guided by the guide plate by utilizing the bending action of the distal end portion and inserted into the insertion hole. In particular, when it is used as a lower spacer, its effect is effectively exhibited.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a state in which reinforcing bar cage structures of the present invention are aligned.

FIG. 2 is a front view showing an example of a lower spacer used for the reinforcing cage structure of FIG. 1;

FIG. 3 is a plan view of a lower spacer of FIG. 2;

FIG. 4 is a side view of the lower spacer of FIG. 2;

FIG. 5 is a front view showing another example of the lower spacer.

FIG. 6 is a plan view of the lower spacer of FIG. 5;

FIG. 7 is a side view of the lower spacer of FIG. 5;

8 is a partially enlarged front view showing a state where a set rod is inserted into a lower spacer in the reinforcing cage structure of FIG. 1;

FIG. 9 is a view similar to FIG. 8;

FIG. 10 is a view similar to FIG. 8;

FIG. 11 is a perspective view showing a conventional reinforcing cage structure.

FIG. 12 is an enlarged front view of an upper spacer in FIG. 11;

FIG. 13 is an enlarged front view of a lower spacer in FIG. 11;

FIG. 14 is a perspective view showing a state in which the conventional reinforcing cage structures of FIG. 11 are aligned.

FIG. 15 is a front view showing an example of a set rod.

FIG. 16 is a plan view of the set rod of FIG. 15;

FIG. 17 is an enlarged partial front view of the tip of the set rod of FIG. 15;

18 is a partially enlarged front view showing a state where the tip of the set rod of FIG. 17 is rotated by 90 degrees.

FIG. 19 is a partially enlarged front view showing a state where the set rod of FIG. 15 is inserted into and engaged with a spacer.

FIG. 20 is a partial perspective view showing a state in which a large number of reinforcing bar cages are blocked by set rods and are suspended at predetermined positions without a forming mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcing bar cage 2 Vertical bar 3 Horizontal bar 4 Reinforcing bar mat 5 Upper spacer 6 Lower spacer 7 Insertion hole 8 Insertion hole 9 Alignment jig 10 Alignment table 11 Alignment guide rod 12 Guide 13 Flat plate 14 Set rod 15 Pipe 16 Set rod body 17 Lever 18 Hook 19 Tip part 20 Reducing part 21 Swelling part 22 Mold form 23 Set frame 24 Suspension fitting 30 Lower spacer 31 Connecting body 32 Guide plate 33 Insertion hole

Claims (2)

(57) [Claims] 1. An upper spacer having a wide rectangular insertion hole and a lower spacer having a narrow rectangular insertion hole.
In a reinforcing bar cage structure formed by connecting upper and lower portions of two reinforcing bar mats formed of vertical and horizontal bars and arranged in parallel at a predetermined interval, opposing lengths of the insertion holes of the lower spacer. A reinforcing bar cage structure provided with a guide that expands in a tapered shape from the edge side toward the upper spacer. 2. An upper spacer having a wide rectangular insertion hole and a lower spacer having a narrow rectangular insertion hole.
In the spacer used for the reinforcing bar cage formed by connecting the upper and lower portions of two reinforcing bar mats formed of vertical bars and horizontal bars and disposed in parallel at a predetermined interval, a pair of the spacers are disposed in parallel at a predetermined interval. And a pair of guide plates joined at right angles to each other and connected in parallel at a predetermined interval, and a rectangular opening is formed by the pair of muscle connectors and the pair of guide plates. And a space between opposing surfaces of each guide body is tapered from the opening.