JP3182711B2 - Reinforcing jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar applied to the construction of a reinforced concrete building or civil engineering structure.
For jigs .

[0002]

2. Description of the Related Art In recent years, various construction methods have been proposed and put into practical use in order to rationalize the construction of buildings and civil engineering structures. The fact is that automation and mechanization have not yet been fully realized, and are still mainly performed manually by workers. Therefore, especially when constructing large-scale structures that use a large amount of large-diameter reinforcing steel, arranging the reinforcement requires a great deal of labor and time, which is an obstacle to reducing construction costs and shortening the construction period. It is one.

FIG. 8 shows a design example of a frame of a large-scale structure using a large-diameter reinforcing bar. The underground structure shown in FIG. 8 is a cylindrical underground structure having a diameter of more than 100 m, and a reinforced concrete side wall 2 having a thickness of more than 2 m is reversely struck inside an underground continuous wall 1. It is constructed by forming by a method. Side wall 2
, For example, a large-diameter vertical streak 3... Such as D38 (nominal diameter 38 mm) and a horizontal streak 4... In order to connect such large-diameter rebars, a screw-in type mechanical joint 5 is often used.

[0004]

However, as described above, the rebar arrangement work in the construction of such a structure has to be carried out manually by mobilizing a large number of workers, and therefore, it is extremely difficult. Inefficient heavy work had to be performed over a long period of time.

[0005] In the above case, it is conceivable to integrate the vertical streaks 3 and the horizontal streaks 4 in a wire mesh shape in advance and arrange them all at once. In any case, if a large-diameter rebar such as D38 is integrated in a wire mesh in advance, it will be extremely heavy and not only will be more difficult to handle, but also the screw-in type as described above In the case where the mechanical joint 5 is used, there is a problem that the work becomes difficult because the individual rebar cannot be rotated, and it is not practical to apply the present invention to the case of constructing a large-scale structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is an effective means for realizing rationalization and labor saving of rebar construction, particularly, for arranging large-diameter rebars for construction of large-scale civil engineering and building structures. Effective rebar arrangement for efficient work
It is intended to provide tools .

[0007]

According to the first aspect of the present invention, there is provided a reinforcing steel bar.
Arrange reinforcing bars buried in concrete frame
At the time, multiple rebars are put together in a substantially parallel state
A jig for reinforcing bars for holding, a handling device
A rectangular frame-like frame gripped from the back side by
At the front side of the frame, a plurality of rebars are
A plurality of holding portions for holding the members in parallel with each other;
Reinforcing / removing the rebar held by the holding part from the frame
A locking mechanism for locking freely, wherein the holding portion is
At a distance larger than the external dimensions of the reinforcing bar to be
A pair of guides projecting and fixed to the front side of the frame
And the locking mechanism can slide the respective guide bodies.
Slide pipe penetrating through the pipe and the slide pipe
Attached to the front of the slide pipe
The holding unit is closed between the pair of guides and the holding unit is closed.
A plurality of locking claws retreat from this and release the holding part.
It is characterized by that.

According to a second aspect of the present invention, there is provided a bar arrangement according to the first aspect.
Jig, wherein the holding portion rotates each individual reinforcing bar.
It is characterized in that it is configured to be rotatably held.

The invention according to claim 3 is the invention according to claim 1 or 2.
A jig for arranging reinforcing bars, wherein the frame is provided on a back side thereof.
Frames of other jigs with the same shape can be stacked
And on the back side of the frame,
Other holding parts are provided for positioning the reinforcing bars to be held
It is characterized by having been done.

[0010]

The reinforcing bar arrangement is performed by using the reinforcing jig of the present invention.
In this method, a handling device grips a jig for holding a plurality of rebars collectively by a handling device and arranges the rebars at the rebar placement position, thereby guiding all of the rebars to the rebar placement position at a time. And the connecting ends thereof face the connecting ends of the existing reinforcing bars. Then, in this state, the respective reinforcing bars are sequentially connected to the existing reinforcing bars, and after all the reinforcing bars have been connected, the reinforcing jig is removed. As a result, the work efficiency is remarkably improved as compared with a conventional general case in which individual reinforcing bars are held one by one and arranged while performing positioning.

Further, the reinforcing jig of the present invention holds a plurality of reinforcing bars collectively on the front side of the frame.
This frame is gripped by the handling device from the rear side and arranged at the bar arrangement position. Therefore, by using this jig for reinforcing bars, all the reinforcing bars to be arranged can be led to the reinforcing position at a time and maintained in the reinforcing position, and in this state, each reinforcing bar is sequentially connected to the existing reinforcing bars. I can do it. The holding of the reinforcing bar to the frame is performed by attaching the reinforcing bar to the holding portion and locking by a locking mechanism.
After the bar arrangement work is completed, the reinforcing bar can be easily removed from the frame by operating the locking mechanism. In addition, since each rebar is rotatably held on the holding portion, when a screw-in type mechanical joint is used, the connection operation can be easily performed by rotating each rebar.

Further, the reinforcing jig of the present invention can be self-propelled.
Grasping by a handling device,
Displace the jigs for reinforcement in any direction and rotate
To freely and easily adjust the posture of the bar arrangement jig
I can do it.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. The construction method, the jig for arranging the bars, and the handling device of the present embodiment described below are applied when arranging the vertical bars 3 of the side wall 2 of the underground structure shown in FIG.

First, with reference to FIGS.
0 will be described. The jig 10 for reinforcing bars of the present embodiment has a plurality of
In this case, the vertical streaks 3 of the present invention are collectively held parallel to each other and at equal intervals. Each of the frames 11 is formed by a pair of vertical members 12, 12 made of a channel material and a pair of horizontal members 13, 13 connecting the vertical members 12 to each other. The frame 11 is held on the front side of the frame 11 (on the front side of the paper in FIG. 1 and on the lower side in FIG. 2).
A stopper 14 made of an angle material is provided between the lower ends of the vertical members 12, 12.
The lower end portions of the vertical streaks 3 are supported by 4 so that they do not fall off.

Each of the cross members 13 is provided with a holding portion 15 for holding each of the vertical stripes 3. Each of the holding portions 15 is a pair of guide bodies that are fixed to the front side of the frame 11 with a space (for example, about 90 mm) larger than the outer dimension of the vertical streak 3 (D38 in this embodiment) to be held. The longitudinal stripes 3 are formed between the pair of guide bodies 16 and 16 by being formed between them. In FIGS. 1 and 2, only one of the guide members 16 is omitted from the holding portion 15 located at the left end, and the vertical member 12 also serves as the guide member 16.

Also, each of the cross members 13, 13 is provided with:
A locking mechanism 17 is provided for locking the vertical streaks 3 held by the holding portions 15 so as not to fall off. The locking mechanism 17 is, as shown in FIGS.
Each guide body 16 is provided so as to be slidable along 3.
Slide pipe 18 penetrating through each of the holding portions 1
5 are constituted by a plurality of locking claws 19 attached to the slide pipe 18 at equal intervals. When the slide pipe 18 is pushed to the distal end side (the left side in FIG. 3), the locking claws 19 are located between the pair of guides 16 forming the holding portions 15 and all the holding members 19 are held. Are closed, and the guide members 16, 16 and the locking claws 19 and the cross members 13 surround the vertical stripes 3 to prevent the vertical stripes 3 from falling off (the state shown in FIG. 3). ). Further, when the slide pipe 18 is pulled toward the base end (right side in FIG. 3) from this state, the locking claws 19 are retracted to the right from between the guide bodies 16 and 16 to open the holding parts 15. In the state, the vertical stripes 3 can be freely removed from the holding portions 15. Reference numeral 20 denotes a collar member that slidably supports the base end of the slide pipe 18, and reference numeral 21 denotes a retaining bolt that is screwed into the collar member 20 to fasten and fix the slide pipe 18.

Further, each of the cross members 13, 13 is provided with a frame 11 at substantially the same position as the pair of guides 16, 16.
A pair of other guides 22, 22 projecting to the back side of the guide are provided, and another holding portion 23 for attaching a vertical streak is provided between the guides 22, 22. The jigs 10 of the present embodiment are configured such that a plurality of jigs having the same shape can be stacked, and the mounting of the vertical streaks 3. The jigs 10 can be stacked using the holding portions 23... While being sequentially stacked.

The procedure for mounting the vertical bars 3 to the bar arrangement jig 10 will be described with reference to FIG. First, a base frame 30 as shown in FIG. The base frame 30 has the same shape and the same dimensions as the frame 11 of the reinforcing arrangement jig 10, and each reinforcing arrangement jig 1
The guides 31, 31 similar to them are attached to the guides 22, 22 provided on the rear side of the base frame 30, and the vertical streaks 3 are formed on the upper surface of the base frame 30 by the guides 31, 31. Holder 32 for positioning
Is provided.

After arranging the vertical streaks 3 on each of the holding portions 32 of the base frame 30, as shown in FIG.
Is set with the front side facing down. At this time, the slide pipe 18 of the reinforcing jig 10 is retracted toward the base end, and the locking claws 19 are retracted from the holding portions 15. Then, the vertical streaks 3 arranged on the base frame 30 naturally enter into the respective holding portions 15 of the jigs 10 for reinforcing arrangement stacked on the base frame 30, and FIG. As shown in (c), the slide pipe 18 is pushed out to the distal end side, and each holding portion 15 is closed by the locking claw 19.

Subsequently, the vertical bars 3 are arranged on the other holding portions 23 on the rear side of the reinforcing bar holding portion 10 and another jig 10 for reinforcing bars is stacked on the upper surface thereof, whereby the reinforcing bars are arranged. Jig 1
0 are naturally disposed in the holding portions 15... Of the holding portions 1 by pushing out the slide pipe 18.
5 (see FIG. 4D). In this manner, the vertical bars 3 are attached to each of the bar arrangement jigs 10 while sequentially stacking them, and the above operation may be repeated for the required number.

Next, an example of a suitable handling device employed for gripping the reinforcing jig 10 will be described with reference to FIG. The handling device 39 uses a hydraulic excavator as a base machine, has a self-propelled traveling vehicle 40, has a swivelable boom 41, and has a gripping jig 10 at an end thereof so as to be capable of controlling the posture. Frame 42
Is attached. The gripping frame 42 is attached to the tip of the boom 41 so as to be able to swing vertically about a horizontal axis 43, and swings horizontally about a vertical axis 45 with respect to the first frame 44. A second frame 46 slidably attached to the second frame 46, a third frame 47 slidably attached to the second frame 46 in the left-right direction, and a third frame slidably attached to the third frame 47 in the up-down direction. 4 frames 4
8 and a fifth frame 50 rotatably mounted on a fourth frame 48 about a horizontal axis 49. Reference numeral 51 denotes a hydraulic cylinder for swinging the entire gripping frame 42 in the vertical direction.
Is a hydraulic cylinder for swinging the second to fifth frames in the left and right direction, 53 is a hydraulic cylinder for sliding the third to fifth frames in the left and right direction, 54 is a guide roller for guiding the sliding, and 55 is A hydraulic cylinder 56 for sliding the fourth and fifth frames vertically
Is a guide roller for guiding the ascending and descending, and 57 is a hydraulic cylinder for rotating the fifth frame around the horizontal axis 49.

The fifth frame 50 is provided with a gripping mechanism 60 for gripping the bar arrangement jig 10 from the back side. As shown in FIG. 6, the gripping mechanism 60 is rotatably supported by shafts 61 and 62, and a pair of gripping claws 63 and 6 that sandwich the horizontal member 13 of the reinforcing jig 10 from above and below.
4 and a hydraulic cylinder 65, a rod 66, and a link 67 for opening and closing the gripping claws 63 and 64. By operating the hydraulic cylinder 65 and sliding the rod 66 in the axial direction, each gripping claw is formed. The jig 10 for rebar arrangement is gripped releasably by opening and closing the 63 and 64.

In the handling device 39 having the above-described structure, the gripping jig 10 is gripped by the gripping frame 42 by the gripping mechanism 60 to allow the traveling carriage 40 to run on its own, and the boom 41 is turned to rotate the boom 41. 10 is guided to a desired bar arrangement position, and the holding frame 42 is swung, slid, and rotated to displace the bar arrangement jig 10 in three axes directions orthogonal to each other and to rotate the jigs 10 around these axes. It is possible to freely take a desired posture.

Next, a description will be given of the work of arranging the vertical streaks 3 in the underground structure shown in FIG. Screw threads are used as the vertical bars 3 to be arranged, and screwed mechanical joints 5 are attached in advance at one end, that is, a connection end to be connected to the existing vertical bar. Then, as described above, the vertical bars 3 are attached to the reinforcing bar gripping tools 10 while sequentially stacking the reinforcing bar gripping tools 10, and a plurality of the reinforcing bar gripping tools 10 in the state of being stacked in this manner are stacked. Collectively transport to the vicinity of the construction site.

At the construction site, as shown in FIG.
Of the plurality of stacked jigs 10 for stacking, the uppermost one is gripped by the above-mentioned handling device 39 and guided to a bar arrangement position, and the gripping frame 42 is operated to operate the vertical bars 3. Is adjusted so that each mechanical joint 5 faces the connection end of the existing longitudinal streak.

Then, as shown in FIG.
An operator gets in the vehicle and sequentially connects the longitudinal bars 3 to the existing longitudinal bars by mechanical joints 5. At this time, vertical streak 3 ...
Are rotatably held in the holding portions 15 so that the screwing operation by the mechanical joints 5 can be easily performed. When the connection of all the vertical bars 3 is completed, the holding of each vertical bar 3 is released by pulling in the slide pipe 18, and the gripping jig 10 is removed by retracting the gripping frame 42, and the existing vertical bars 3 are removed. Are left in a form suspended from the existing vertical streaks. With this, the rebar arrangement work for one rebar arrangement jig, that is, the 14 vertical rebars 3... Has been completed. Thereafter, the handling apparatus 39 grasps the new rebar arrangement jig 10 and repeats the same procedure. Good.

As described above, the bar arrangement jig 10 of this embodiment is
And the use of the handling device 39, it is possible to collectively guide the plurality of vertical streaks 3 to the bar arrangement position and hold the bar arrangement posture, and position the individual vertical streaks 3 manually one by one. The working efficiency can be greatly improved as compared with the conventional case in which the reinforcement is arranged, and sufficient labor saving can be realized.

The jig 10 for arranging reinforcement according to the present embodiment holds the individual vertical streaks 3 in a rotatable state. Therefore, when the screw-in type mechanical joints 5 are employed, the vertical streaks 3 are used. Can be freely rotated, so that the connection work does not become troublesome as in the case where the vertical stripes 3 and the horizontal stripes 4 are integrated in a wire mesh in advance. However, the connection of the vertical streak 3 is not necessarily limited to the use of the mechanical joint 5, but may be, for example, binding or welding to the existing vertical streak. In this case, the vertical streak 3 is not necessarily held rotatably. . Even in such a case, a plurality of vertical streaks 3... Are held in a bar-arrangement posture by the bar arrangement jig 10 at a time, and the connection work to the existing vertical streaks is sequentially performed to perform the work. Is still easy to do.

Next, the arrangement of the horizontal streaks 4 is performed following the arrangement of the vertical streaks 3. A plurality of jigs 10 for the arrangement of the horizontal streaks 4. Of the horizontal streaks 4... Are collectively held, and each of the horizontal streaks 4. By going
It can be performed efficiently as in the case of the vertical stripes 3.
In this case, the horizontal streaks 4 can be connected to each other by using the mechanical joints 5 or may be connected in another form.

The arrangement of the vertical streaks 3 may be curved or the horizontal streaks 4... May be curved because the shape of the frame 2 is curved. In this case, the frame 11 of the reinforcing jig 10 may be curved so as to conform to the frame shape or the reinforcing bar shape.

[0031]

As described above, the invention of claim 1 is described.
The jigs for rebar arrangement are grasped from the back side by a handling device.
On the front side of the rectangular frame held, a number of reinforcing bars
And the reinforcing bars are fixed to the frame.
Equipped with a locking mechanism for releasably locking, in particular,
Consists of a pair of guide bodies and slides the locking mechanism
Consisting of a pipe and a plurality of locking claws attached to it,
By sliding the slide pipe, it is held by the locking claw.
The holding part is closed and released.
Where the individual reinforcing bars are arranged one by one by hand
Can significantly improve the efficiency of bar arrangement work.
As a result, sufficient labor saving can be realized.

Further , the reinforcing jig according to the second aspect of the present invention is
Since the rebar is rotatably held in the holding section,
It is suitable when using only mechanical joints.

Further, the jig for bar arrangement according to the third aspect of the present invention
Make sure that the frames can be stacked sequentially
On its back side, the positioning of the rebar to be held in another frame
The other holding parts are provided for
The work of mounting the rebar can be easily performed.

[Brief description of the drawings]

FIG. 1 is an overall front view of a bar arrangement jig according to an embodiment of the present invention.

FIG. 2 is a partially enlarged plan view of the jig for reinforcing bars.

FIG. 3 is an enlarged perspective view of a main part of the jig for reinforcing bars.

FIG. 4 is a view showing a series of work procedures for mounting a reinforcing bar on the reinforcing bar jig.

5A and 5B are diagrams illustrating an example of a handling device that grips the jig for reinforcing bars, wherein FIG. 5A is a side view and FIG. 5B is a plan view of a gripping frame.

FIG. 6 is a side view showing a gripping mechanism of a bar arrangement jig in the handling device.

FIG. 7 is a diagram showing a state in which a bar arrangement work is performed using the handling device.

FIG. 8 is a diagram illustrating an example of a frame of a large-scale underground structure.

[Explanation of symbols]

 2 Frame 3 Vertical Bar (Rebar) 4 Horizontal Bar (Rebar) 5 Mechanical Joint 10 Jig for Reinforcement 11 Frame 15 Holder 16 Guide 17 Locking Mechanism 22 Guide 23 Other Holder 39 Handling Device 40 Traveling Dolly 41 Boom 42 gripping frame 60 gripping mechanism.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Konomi 1-3-2 Shibaura, Minato-ku, Tokyo Inside Shimizu Corporation (72) Inventor Teruaki Ohashi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (56) References JP-A-60-175669 (JP, A) JP-A-57-50534 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04G 21/12 105 E04G 21/16-21/18

Claims (3)

(57) [Claims] (1) embedded in a reinforced concrete frame
When arranging reinforcing bars, multiple reinforcing bars are almost parallel
Is a jig for reinforcing bars to hold
And the rectangular frame gripped from the back side by the handling device
And a plurality of reinforcing bars on the front side of the frame
A multiple for maintaining parallel to each other at a given interval
The number of holding parts and the reinforcing bars held by the holding parts
A locking mechanism for removably locking the arm, wherein the holding portion is larger than an outer dimension of a reinforcing bar to be held.
Projected to the front side of the frame at a distance and fixed
And the locking mechanism slidably penetrates each of the guide bodies.
Slide pipe and the slide pipe
The slide of the slide pipe causes
Closes the holding part located between the guide bodies and retreats from it.
Escaping and releasing the holding part
A special jig for bar arrangement. 2. The jig for reinforcing bars according to claim 1, wherein
The holding section is configured to hold each rebar rotatably.
A jig for arranging reinforcement, characterized in that it is formed. 3. A jig for reinforcing bars according to claim 1 or 2.
Therefore, the frame has another reinforcing bar of the same shape on its rear side.
The jig frame can be stacked and the frame
On the back side of the arm, there is a reinforcing bar to be
Note that other holding parts for positioning are provided.
A jig for rebar arrangement.