JPH0536038Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to an attachment device for attaching shear reinforcing bars such as hoops or stirrups to main reinforcements.

《Prior art and its problems》 When pre-assembling column reinforcing bars and beam reinforcing bars, it was difficult to mechanize the attachment of shear reinforcing bars such as hoops or stirrups to the main reinforcement, so in the past most of the work was done manually to attach the main reinforcement. It was installed. Therefore, the efficiency of pre-assembling reinforcing bars is low, and especially in recent years, when the development of super high-rise reinforced structures has forced the use of larger diameter or heavier reinforcing bars, it is difficult to install shear reinforcing bars. There is a tendency for mechanization to be required from the viewpoint of improving work efficiency.

The present invention has been devised to effectively solve the above-mentioned problems, and its purpose is to provide a device that can attach shear reinforcing bars using mechanical force.

<Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention uses a single steel wire having a length that can be wound around the entire circumference of the main reinforcement as a shear reinforcement, and this shear reinforcement A portion of the reinforcing bar is fixedly held around the main reinforcement by a fixed chuck, and the free end of the shear reinforcing bar is held by a movable chuck, and the movable chuck is driven in a direction along the circumference of the main reinforcement by means of driving means. The shear reinforcing bars are moved around the main reinforcing bars and are attached to the main reinforcing bars.

<<Operation>> In the shear reinforcing bar installation device configured as described above, the shear reinforcing bars are bent by mechanical force and wound around the main reinforcing bars to be attached, eliminating the need for manual attachment as in the past. Work efficiency will be improved.

<<Example>> An example of the present invention will be described below based on the drawings. As shown in FIG. 1, a mounting device 2 for a shear reinforcing bar (hereinafter referred to as reinforcing bar) 1 according to the present invention is attached to the tip of an arm 4 of a base machine 3 such as a backhoe. Specifically, the main body frame 6 of the mounting device 2 is attached to the swinging/rotating shaft 5 at the tip of the arm 4, and the mounting device 2 swings in the direction of arrow a in FIG. 1 by driving the swinging/rotating shaft 5. , so as to rotate in the direction of arrow b.

The main body frame 6 of the mounting device 2 is L-shaped as shown in FIGS. 1 and 2, and has a horizontal frame 6a.
As shown in FIGS. 2 and 3, a fixing chuck 9 for clamping and fixing the reinforcing bar 1 is disposed on the top surface of the tip. Further, a pair of support columns 10 located next to the fixed chuck 9 are disposed on the horizontal frame 6a, as shown in FIGS. 2 and 4. This support 10 is telescopic, and the tightening screw 11
The height of the support column 10 can be adjusted by loosening it. A U-shaped notch 12 is formed at the upper and lower ends of the column 10, and a main reinforcement 1 is inserted into this notch 12.
3 can be fitted.

On the other hand, a slide groove 16 is formed in the vertical frame 6b of the main body frame 6 along its longitudinal direction, and a base 18 of a hydraulic cylinder 17 is slidably inserted into this slide groove 16. The hydraulic cylinder 17 extends horizontally, and a movable chuck 20 for holding the reinforcing bar 1 is attached to the tip of the rod 19, as shown in FIGS. 2 and 5. As shown in FIG. 5, the moving chuck 20 is attached to the rod 19 by a pin 21, so that the moving chuck 20 can freely rotate around this pin 21.

Next, the temporary stand 24 disposed on the ground side will be explained based on FIG. 2 and FIGS. 6 to 8.
As shown in FIG. 2, this temporary stand 24 is used to place the reinforcing bar 1 in a predetermined position so that the reinforcing bar 1 before being attached can be easily lifted up by the attaching device 2. Specifically, the temporary stand 24 is placed below the main reinforcement 13, and the upper end of the temporary stand 24 is
As shown in the figure, a pair of elastic clamps 25 are provided. Further, in the intermediate portion of the temporary storage table 24, a support portion 27 having a groove portion 26 open at the top is disposed as shown in FIGS. 2 and 8.

As shown in FIG.
The vertical part 1a is fixed with a clamp 25, and the elbow part 1d where the vertical part 1a and the horizontal part 1b intersect is inserted into the groove part 26 of the support part 27 and supported. It's becoming like that. Note that the total length of the reinforcing bars 1 is formed to be equal to the total circumferential distance of the main bars 13.

The reinforcing bar 1 attachment device 2 and the temporary holder 24 are constructed as described above, and the reinforcing bar 1 is attached by the attaching device 2 as follows. First, as shown in FIG. 2, the horizontal part 1b of the reinforcing bar 1 is held between fixed chucks 9, and the inclined part 1c is held between moving chucks 20. In addition, checks 9 and 20 at this time
As the driving source, for example, the hydraulic system of the backhoe 3 may be used.

Next, operate the base machine 3 to raise the mounting device 2 in the direction of arrow c in FIG.
Place it on the bottom of 3. At this time, since the lower part of the clamp 25 is formed with a skirt part 28 which is open in a V-shape as shown in FIG. 7, the horizontal part 1b of the reinforcing bar 1 can easily pass through the clamp 25. Similarly, the elbow part 1d of the reinforcing bar 1
comes out upward from the groove 26 of the support part 27 of the temporary storage stand 24.

After applying reinforcing bar 1 to the bottom of main bar 13,
As shown in FIG. 9, the hydraulic cylinder 17 is driven to extend the rod 19 and push down the upper half of the inclined portion 1c of the reinforcing bar 1 toward the upper surface of the main bar 13. At this time, the struts 10 function to prevent the main reinforcing bars 13 from deforming. In this way, as shown in FIG. 10, when the entire circumference of the main reinforcement 13 is surrounded by the reinforcing reinforcement 1, the chucks 9 and 20 are opened to complete the installation work. Note that both ends of the reinforcing bar 1 are bent into a V-shape or an L-shape as locking portions 29, 30, and these locking portions 29, 3
0 is locked to the corner main reinforcement 13.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified in various ways. For example, in the above embodiment, the reinforcing part is attached to the main reinforcement arranged in a rectangular shape, but it is also possible to attach the reinforcement to the main reinforcement arranged in a circular shape, and in that case, the movable chuck 20 is What is necessary is just to employ a configuration in which it is moved in an arc shape.

<<Effects of the invention>> As described above, the present invention fixes a part of the reinforcing bar with a fixed chuck, and in this state, the free end of the reinforcing bar is held by a movable chuck and dragged around the main reinforcing bar,
Since the reinforcing bars are attached using this method, the reinforcing bars can be attached to the main bars using mechanical force, which greatly improves construction efficiency compared to conventional manual attachment. It can also contribute to shortening the construction period when pre-assembling heavy reinforcing bars.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of a mounting device using a base machine of a backhoe, Fig. 2 is a side view of the mounting device, and Fig. 3 is a side view of the mounting device. 4th sectional view taken along the - line arrow of
The figure is a side view taken from the - line arrow in Fig. 9, and Fig. 5 is a side view of Fig. 2.
A sectional view taken along the - line in the figure, Fig. 6 is a - of Fig. 2.
7 is a side view of FIG. 2 as seen from the - line; FIG. 8 is a side view of FIG. 2 as seen from the - line;
Figure 9 is a side view of the device in the middle of installing reinforcing bars,
Figure 0 is a side view of the device after the installation of reinforcing bars has been completed. 1...Shear reinforcement, 2...Mounting device, 3...
Backhoe, 9...Fixed chuck, 10...Strut, 13...Main reinforcement, 17...Hydraulic cylinder, 20
...Movement chuck, 24...Temporary storage stand.

Claims (1)

[Scope of utility model registration request] A mounting device for attaching shear reinforcing bars such as hoops or stirrups in column reinforcing bars or beam reinforcing bars to the main reinforcement, consisting of a single steel wire having a length that allows the shear reinforcing bars to be wrapped around the entire circumference of the main reinforcing bars. At the same time, a fixed chuck that fixedly holds a part of the shear reinforcing bar and a movable chuck that movably holds the free end of the shear reinforcing bar are provided, and the movable chuck is driven by a driving means to move the free end of the shear reinforcing bar. 1. A shear reinforcing bar installation device, characterized in that the shear reinforcing bar is moved in a direction along the periphery of the main reinforcing bar and is wound and attached around the main reinforcing bar.