JPH02229364A - Preassembling jig for reinforcement - Google Patents

Abstract

PURPOSE:To shorten working time and improve working efficiency by connecting outer frame members to bar clamp members in parallel crosses to form an upper jig and a lower jig, and assembling these jigs near the vertical end parts of reinforcements to be preassembled. CONSTITUTION:Outer frame members 1, 2 are arranged in parallel crosses, and a plurality of reinforcement aligning members 3 are laid in the inner part. U-shaped fittings 1a, 1a for holding a reinforcement 101 are provided on the both end parts of the member 1, and semi-circular cutout parts 1b utilized for positioning the reinforcement are formed between them. Similarly, semi-circular cutout parts 2a, 3a are provided in the longitudinal directions of the members 2, 3, and these members are assembled to form an upper jig A. A bar clamp member 21 and a connecting fitting 22 are assembled to form a lower jig B, with the bar clamping member 21 having clamp fittings 21a disposed at fixed intervals in such a manner as to be capable of freely assembled and disjoined. A plurality of reinforcements to be preassembled are assembled, with the upper jig A and the lower jig B being assembled near the upper and lower end parts thereof to complete preassembly. Hence, the reinforcements can be prevented from getting out of shape during the work.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a pre-assembly jig for reinforcing bars used in RC lamination method etc., and in particular, a jig for pre-assembling reinforcing bars in a pre-assembling yard.
This relates to a pre-assembly jig that is suitable for transporting to the site where existing reinforcing bars need to be added while maintaining their shape. [Prior Art] In the RC layered construction method, new reinforcing bars are added and welded to a plurality of upright reinforcing bars that are set up and fixed in advance at appropriate intervals. In this case, the new reinforcing bars to be added are preassembled in advance at a rebar preassembly yard.
From the viewpoint of work efficiency and safety, it is desirable to carry the reinforcing bars onto the upright reinforcing bars, suspend them, and weld the previously assembled reinforcing bars to each of the upright reinforcing bars.

[Problem to be solved by the invention]

However, in the prior art, an appropriate jig for pre-assembling has not been devised, which is one of the technical issues in the RC lamination method, etc., in which a large number of reinforcing bars are added and laminated.

The present invention, as a means to solve such technical problems, is capable of efficiently pre-assembling reinforcing bars to be added to a plurality of existing upright reinforcing bars at a reinforcing bar pre-assembly yard, and also enables easy pre-assembly of reinforcing bars to be added to a plurality of existing upstream reinforcing bars, and also to prevent the reinforcing bars from being added during transportation and addition work. To provide a pre-assembly jig for reinforcing bars that can prevent reinforcing bars from deforming, perform stable addition work in a relatively short time, and greatly improve work efficiency.

[Means for Solving the Problems] In order to achieve the above object, the present invention has developed a pre-assembly jig having the following configuration as a jig for pre-assembling a plurality of reinforcing bars. . First, the multiple reinforcing bars to be pre-assembled are pre-assembled by assembling an upper jig and a lower jig near their upper and lower ends, respectively. The upper jig includes a horizontal outer frame that is configured to be freely disassembleable by connecting four outer frame members in a parallel grid shape, and a plurality of reinforcing bar alignment members are hung at regular intervals within this horizontal outer frame, In addition, metal fittings for gripping reinforcing bars are attached to both ends of the two left and right outer frame members constituting the horizontal outer frame, and a metal fitting for positioning the reinforcing bars is also installed between the gripping metal fittings. A plurality of notches were provided at regular intervals.

Further, the reinforcing bar alignment member is also provided with a plurality of notches at regular intervals for positioning the reinforcing bars.

Next, the lower jig consists of a horizontal fixing frame that is made up of four rod-shaped clamp members each equipped with a plurality of clamp fittings for tightening reinforcing bars at regular intervals, which are connected in a cross-shaped pattern and can be disassembled. A plurality of the rod-shaped clamp members are hung across the fixed frame and detachably attached at regular intervals.

Further, the clamp fitting in the rod-shaped clamp member is
The present invention is characterized in that each clamp fitting is configured as a so-called interlocking rod-shaped clamp member that operates in conjunction with each other at the same time.

[Effect]

As explained above, as a jig for pre-assembling a plurality of reinforcing bars, the present invention includes an upper jig that is assembled near the upper end of the reinforcing bars to be pre-assembled, and a lower jig that is assembled near the lower end of the reinforcing bars to be pre-assembled. Moreover, as mentioned above, the upper and lower jigs incorporate cutouts with a positioning function for reinforcing bars and clamp fittings with a gripping function, so that pre-assembled reinforcing bars can be easily removed. It is held firmly and can be transported to the site without changing its dimensions. Also, it is easy to adjust the butt against the existing standing reinforcing bars. In order to further clarify this point, an outline of the procedure for pre-assembling reinforcing bars using the upper and lower jigs will be explained.

First, a cross-shaped horizontal outer frame is assembled using the four outer frame members that make up the upper jig. Since two of the four outer frame members are equipped with gripping metal fittings for gripping reinforcing bars at both ends thereof, these gripping metal fittings are located at the four corners of the horizontal outer frame.

Therefore, the pre-assembled special reinforcing bars are held in each of the four corner gripping metal fittings. That is, four pre-assembled reinforcing bars are held in the grips at the four corners of the horizontal outer frame, and the horizontal outer frame itself is fixed near the upper end of the four reinforcing bars so as to maintain the horizontal state.

Next, the four rod-shaped clamp members constituting the lower jig are placed along the lower ends of the four reinforcing bars held at the four corners of the horizontal outer frame, and the clamps are placed at both ends of each rod-shaped clamp member. The four reinforcing bars are passed through the metal fittings, and then the four rod-shaped clamp members are connected in a parallel cross shape to form a horizontal fixed frame. Then, first temporarily assemble the four reinforcing bars that should be assembled first using the parallel cross-shaped horizontal outer frame that makes up the upper jig and the horizontal fixing frame that also has the double cross shape that makes up the lower jig. Next, in this state, a reinforcing bar alignment member is placed within the horizontal outer frame that constitutes the upper jig, and a rod-shaped clamp member is placed within the horizontal fixed frame that constitutes the lower jig.

Then, the reinforcing bars to be pre-assembled are vertically placed between the reinforcing bars positioning notch provided in the reinforcing bar alignment member of the upper jig and the corresponding clamp fitting of the reinforcing bars in the rod-shaped clamp member of the lower jig. to follow.

Hereinafter, in the above manner, reinforcing bar alignment members and rod-shaped clamp members are placed at regular intervals within the horizontal outer frame of the upper jig and within the horizontal fixed frame of the lower jig, respectively, and the reinforcing bars of the reinforcing bar alignment members are positioned. Line up the reinforcing bars to be pre-assembled vertically along the notch and the clamp fitting of the rod-shaped clamp member. Thereafter, the reinforcing bars along the vertical axis are fastened and fixed by the clamp fittings of the bar-shaped clamp member, completing the pre-assembly of the plurality of reinforcing bars. As a result, the plurality of reinforcing bars are pre-assembled integrally and firmly at regular intervals by the upper jig and the lower jig.

Note that the outer frame member and reinforcing bar alignment member constituting the upper jig are provided with respective fittings for gripping reinforcing bars, the spacing between the notches for positioning the reinforcing bars, the spacing between the reinforcing bar alignment members, and the lower jig. The spacing between the clamp fittings, etc. installed on the bar-shaped clamp members that make up the upper jig and lower jig shall be determined in advance so that they correspond to the respective axes of the existing upright reinforcing bars that are to be added when the assembly is completed as the upper jig and the lower jig. Of course, it is designed to be regulated.

〔Example〕

Next, the configuration of the pre-assembled jig according to the present invention and the assembly procedure as the jig will be specifically explained based on the embodiment shown in the drawings.

FIG. 1 is a plan view showing an upper jig A as a pre-assembled jig, and FIG. 2 is a plan view of the lower jig B.

First, the upper jig A is shown in Fig. 3 (1), (2), (3
) It is composed of three main parts shown in ().

The members shown in FIGS. 3(1) and (2) are
Of the outer frame members 1 and 2 that have four sides of the upper jig A shown in the figure in a cross-shaped pattern, the member shown in (3) is the outer frame member l.
This is a reinforcing bar alignment member that is hung across and fixed inside the cross-shaped horizontal outer frame 4, which is composed of 2 and 2. As shown in FIG. 3(1), the first outer frame member l is equipped with gripping fittings la, la for reinforcing bars 101 having a U-shaped cross section at both ends, and between the gripping fittings 1a, 1a. is the reinforcing bar 10 to be assembled first.
Semicircular notches 1b, 1b, etc. used for positioning 1
・are provided at regular intervals. A lock bolt 1c for gripping and fixing the reinforcing bar 101 is attached to the gripping metal fitting 1a, and the gripping metal fitting 1a. 3 (2) on the opposite side of 1a, that is, near both ends of the outer frame member l.
) Connecting pieces 1e and le each having a U-shaped groove 1d are attached to the outer frame member 2, which is the second member shown in FIG.

Next, as shown in FIG. 3(2), the second outer frame member 2 has semicircular notches 2a, 2a used for positioning the reinforcing bars 101 to be preassembled at regular intervals in the longitudinal direction.
. . are provided, and mounting holes 2b, 2b, . . . for the reinforcing bar alignment member 3, which is the third member shown in FIG.

The third member, the reinforcing bar alignment member 3, is shown in FIG.
), semicircular notches 3a, 3a, . It is provided with connecting pieces 3c, 3c having a U-shaped groove 3b used when attaching to the outer frame member 2.

Next, the configuration of lower jig B (see Figure 2) will be explained. The lower jig B is composed of two main members: a bar-shaped clamp member 21 and a coupling fitting 22 shown in FIGS. 4(1) and 4(2). The rod-shaped clamp member 21 is shown in FIG. 4 (1).
As shown in the figure, clamp fittings 2lb, 2lb
It is configured by equipping it with... FIG. 5 is a cross-sectional view illustrating a mechanism configured to make the clamp fittings 2lb, 2lb... provided at regular intervals on the rod-shaped clamp member 21 into interlocking type clamp fittings 2lb, 2lb... ．． Clamp fittings 2lb, 2l
b..., as shown in FIG. 4(1) and FIG.
c, 21c... and movable claws 21 protruding from window holes 21d, 21d... formed in the side surface of the rod-shaped main body 21a.
e, 21e...

Each of the movable claws 21e, 21e, .
1f, and an operating rod 21g consisting of a screw shaft is screwed into the operating shaft 21f.
By rotating g, the operating shaft 21f moves left and right in the longitudinal direction, and in conjunction with this, each movable claw 2fe, 2
1e... are fixed claws 21c. 21c... So-called interlocking type clamp fitting 2lb that can be moved closer to or further away from the side
, 2lb... Note that 21h is the operating lever 2.
This is a mounting hole for inserting and mounting an operating handle (not shown) when rotating 1g.

Next, FIG. 4(2) shows a coupling fitting 22 used when coupling the rod-shaped clamp member 21. This coupling fitting 22 has coupling holes 22a and 22b into which the bar-shaped body 21a of the bar-shaped clamp member 21 is inserted, which intersect at right angles as shown in the figure.
A lock bolt 22C for locking the inserted rod-shaped body 21a is provided on the side surface of each coupling hole 22a and 22b.
Equipped with 22C. The above are the members constituting the upper jig A and the lower jig B,
Next, upper jig A and lower jig B using each of the above members
An example of the assembly procedure will be described in relation to the pre-assembly work of reinforcing bars 101.

First, the horizontal outer frame 4 corresponding to the four sides of the upper jig A is assembled into a grid shape using two outer frame members 1 and two outer frame members 2.

That is, as shown in FIG. 1, the outer frame members 1 and 1 are placed on the left and right outer frame members 2 and 2 so that their planes have a cross-shaped shape. Then, connecting pieces 1e and 1e provided near both ends of the outer frame member 1 shown in FIG. 3(1) are used to connect the two to form a horizontal outer frame 4.

FIG. 6 is a side view showing the connecting portion, and the connecting pieces 1e of the outer frame member 1 placed on the outer frame member 2 are fastened and connected with the connecting bolts and nuts 5. Note that since the connecting piece 1e is provided with a U-shaped groove 1d, the dimensions can be adjusted at the time of coupling. Note that FIG. 7 is a plan view of FIG. 6.

As shown in FIG.
Since the horizontal outer frame 4 is held in a horizontal state, the gripping fittings 1a and 1a at the four corners are
Pass the reinforcing bars 101 to be preassembled through a, la, and la, and fix the reinforcing bars 101 to the reinforcing bars 101 using the lock bolts lc of the gripping metal fittings 1a. In that case, the horizontal outer frame 4 is fixed near the upper end of the reinforcing bars.

Next, the four rod-shaped clamp members 2l constituting the lower jig B are placed along the vicinity of the lower ends of the four reinforcing bars 101 held by the horizontal outer frame 4 in the upper jig A, and each of the rod-shaped clamp members 2l Clamp fittings 21a, 21a in
... through which the reinforcing bars 101 are passed, forming a cross-shaped horizontal fixed frame 23 that forms the outer circumference of the lower jig B shown in FIG.
Assemble.

At this time, each rod-shaped clamp member 21 is connected using a connecting fitting 22 shown in FIG. 4(2).

That is, the coupling fitting 22 has a coupling hole 22a so that the bar-shaped main body 21a of the bar-shaped clamp member 21 can be coupled orthogonally.
and 22b, the coupling holes 22a and 22b
When the bar-shaped clamp members 21 are inserted and connected to each of the two, a cross-shaped horizontal fixing frame 23 forming the outer periphery of the lower jig B shown in FIG. 2 is formed. FIG. 8 is a perspective view showing the connecting portion of the bar-shaped clamp member 21 by the coupling fitting 22. The rod-shaped bodies 21a and 21a of the bar-shaped clamp member 21 are inserted into the orthogonal coupling holes 22a and 22b of the coupling fitting 22, and the respective Tighten the lock bolts 22c and 22c to connect them.

When the above work is completed, the four previously assembled reinforcing bars 10
1 is temporarily assembled with the horizontal outer frame 4 of the upper jig A held near its upper end and the horizontal fixing frame 23 of the lower jig B held near its lower end. Next, in this state, as shown in FIG. 1, the reinforcing bar alignment members 3 are placed inside the horizontal outer frame 4 that constitutes the upper jig A, and are attached and fixed at regular intervals. That is, the connecting pieces 3c provided near both ends of the reinforcing bar alignment member 3 shown in FIG. 3(3). , 3c to create horizontal outer frame 4
Attach the reinforcing bar alignment member 3 to the left and right outer frame members 2.2. FIG. 9 is a side view showing the attachment joint between the reinforcing bar alignment member 3 and the outer frame member 2, in which the reinforcing bar alignment member 3 is placed on the outer frame member 2.
, and the connecting pieces 3c of the reinforcing bar alignment member 3 are tightened and connected with the connecting bolts and nuts 6. Note that FIG. 10 is a plan view of FIG. 9.

When the installation work of the reinforcing bar alignment member 3 in the upper jig A is completed, next the horizontal fixing frame 23 in the lower jig B is completed.
A bar-shaped clamp member 2l is inserted into the inside of the clamp member 2 and fixed at a fixed interval as shown in FIG. The connection and fixation in this case is performed using the connection metal fittings 22 in the lower jig B (see FIG. 8).

When the assembly of the reinforcing bar alignment member 3 and the bar-shaped clamp member 21 in the upper jig A and the lower jig B is completed, the reinforcing bars 101 to be pre-assembled are placed in the reinforcing bar alignment member 3 at regular intervals.
For positioning, semicircular notches 3a, 3a...
Moreover, since clamp fittings 2lb, 2lb... of the pre-assembled reinforcing bars 101 are respectively attached to the bar-shaped clamp member 21 at regular intervals, the notches 3 corresponding to the upper and lower sides
Arrange the reinforcing bars 101 to be pre-assembled in order on a and the clamp fitting 2lb. Then, when the reinforcement is completed for the clamp fittings 2lb provided in the notches 1b, 2a, 3a of all the members constituting the upper jig A and the rod-shaped clamp part constituting the lower jig B, the clamp fittings 2lb are provided. Mounting hole 2 provided on the outer side of the operating rod 21g of the rod-shaped clamp member 21
Insert the operating handle into 1h and rotate it. Then, the clamp fittings 2lb of each rod-shaped clamp member 21 interlock and clamp the pre-assembled reinforcing bars 101, respectively.
Tighten and fix at the same time. In this manner, all the reinforcing bars 1 are attached to the clamp fittings 2lb of all the rod-shaped clamp members 21.
Complete the pre-assembly by tightening 01. Note that FIG. 11 shows a state in which a plurality of reinforcing bars 101 are pre-assembled using the upper jig A and the lower jig B according to the present invention, and are carried and suspended above the existing standing reinforcing bars 101a to be added. It is.

As described above, the distance between the gripping metal fittings la at both ends of the outer frame members 1 and 2 that constitute the upper jig A is as follows. Semicircular notches 1b, lb... formed for positioning reinforcing bars
, 2a, 2a..., the interval between the semicircular notches 3a, 3a... in the reinforcing bar alignment member 3, and each clamp fitting 2 of the rod-shaped clamp member 21 in the lower jig B
The spacing between lb, 2lb, etc. shall be designed in such a way that when assembled as a jig, the axis of each pre-assembled reinforcing bar 101 coincides with the axis of each pre-assembled reinforcing bar 101a. Of course. [Effects of the Invention] As explained above, the pre-assembly jig for reinforcing bars according to the present invention has an upper jig and a lower jig that are configured to be freely assembled and disassembled, and is used to assemble a plurality of reinforcing bars corresponding to a plurality of pre-assembled upright reinforcing bars. Since reinforcing bars can be pre-assembled, the following effects are expected. (1) Upper jig. Since all of the lower jigs are assembled and disassembled, the number of pre-assembled reinforcing bars can be increased depending on the order in which the jigs are assembled, and the entire number of reinforcing bars can be pre-assembled. As a result, pre-assembly work is performed efficiently.

(2) The components of the upper and lower jigs are each equipped with semicircular notches and interlocking clamp fittings that have the function of positioning the reinforcing bars to be pre-assembled, so pre-assembly can be completed. At this point, the axes of the pre-assembled reinforcing bars precisely match the axes of the existing standing reinforcing bars to be added, so the next work, that is, welding joints, can be carried out efficiently.

(3) In particular, the lower jig is configured so that the vicinity of the lower end of the previously assembled reinforcing bars is tightened and fixed using clamp fittings, so each reinforcing bar is firmly restrained in the horizontal and vertical planes. shape, and there is no need to worry about the array dimensions being distorted during transportation to the site.

(4) To remove the jig after welding the joint, (
As explained in 1), both the upper jig and the lower jig can be assembled and disassembled, so this can be done extremely easily.

As a result of the above, the work of incorporating reinforcing bars in the RC layered construction method, etc., which is performed by joining multiple reinforcing bars, is much more efficient than conventional work, and can make a significant contribution to improving construction work.

[Brief explanation of the drawing]

The drawings show an embodiment of the pre-assembled jig according to the present invention, and FIG. 1 is a plan view of an upper jig constituting the pre-assembled jig, and FIG. 2 is a plan view of the same lower jig. Figures 3 (1) (2) and (3) are perspective views of the outer frame member and reinforcing bar alignment member, which are the main components of the upper jig, and Figure 4 (1) (
2) is a perspective view of a rod-shaped clamp member and a coupling fitting, which are the main members constituting the lower jig. FIG. 5 is a sectional view showing the mechanism of the rod-shaped clamp member shown in FIG. 4, FIG. 6 is a side view showing the connecting portion of the outer frame members in the upper jig, and FIG. 7 is a plan view thereof. . FIG. 8 is a perspective view showing the connecting part of the bar-shaped clamp member by the connecting fitting shown in FIG. 4 (2), and FIG. 9 is a side view showing the connecting part between the outer frame member and the reinforcing bar alignment member in the upper jig. FIG. 10 is a plan view thereof,
FIG. 11 is a side view showing a state in which reinforcing bars pre-assembled using the pre-assembling jig of the present invention are suspended in order to be added to existing standing reinforcing bars. A... Upper jig B... Lower jig 1...
Outer frame member 1a...Grip fitting 1b...Notch IC...Lock bolt 1d...U-shaped groove 1e...Connecting piece 2...Outer frame member
2a...Notch 2b...Mounting hole 3...
・Reinforcement bar alignment member 3a...notch part 3b...
U-shaped groove 3C...Connection piece 4...Horizontal outer frame 5
, 6... Connection bolt and nut 21... Bar-shaped clamp member 21a... Bar-shaped body 2lb... Clamp fitting 21c... Fixing claw 21d... Window hole 21e...
...Movable claw 21f...Operating shaft 21g...Operating rod 21h...Operation handle mounting hole 22...Joining fittings 22a, 22b-joining hole 22c...Rock bolt 23...Horizontal fixed frame 10
1... Reinforcing bars Figure 2 Figure 4 22c Figure 3 Figure 5 21h

Claims (2)

[Claims] (1) In a pre-assembly jig in which an upper jig and a lower jig are assembled near the upper and lower ends of reinforcing bars, and multiple reinforcing bars are pre-assembled in correspondence with existing reinforcing bars to be added, The upper jig consists of a horizontal outer frame that can be disassembled by connecting four outer frame members in a grid pattern, and a plurality of reinforcing bar alignment members that are hung at regular intervals within this horizontal outer frame and are connected in a removable manner. The two left and right outer frame members of the horizontal outer frame are provided with fittings for gripping reinforcing bars at both ends, and a plurality of cutouts for positioning the reinforcing bars are provided between the fittings. The rebar alignment member is also provided with a plurality of notches at regular intervals for positioning the rebars, and the lower jig is for tightening the rebars. A horizontal fixed frame configured to be able to be disassembled by connecting four rod-shaped clamp members each having a plurality of clamp fittings at regular intervals, and a plurality of said rod-shaped clamp members within this horizontal fixed frame. A pre-assembly jig for reinforcing bars that is removably fixed at regular intervals. (2) The rod-shaped clamp member provided with a plurality of clamp fittings in the lower jig is an interlocking rod-shaped clamp member in which each clamp fitting is interlocked and operated simultaneously. Pre-assembly jig.