JP3068781B2 - Reinforcing equipment - 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 steel laying apparatus suitable for use when constructing a deep foundation pile using cast-in-place concrete.

[0002]

2. Description of the Related Art When a reinforcing bar for reinforcing a concrete pile is built in a vertical hole, a reinforcing bar mounting device that can build the reinforcing bar in a small space without using a large crane or a transport vehicle is known. It is desired, and as an example,
There is a reinforcing-bar laying device disclosed in Japanese Patent Application No. 7-216877.

[0003]

By the way, with such a reinforcing bar setting device, a new main bar is sequentially joined to the upper end side of the main bar fed into the vertical hole.
Further, in the above-described reinforcing bar erection device, the main rebar is fed into the vertical hole while guiding the main rebar by a main rebar placement portion (that is, a means for guiding the main rebar) or the like. The upper and lower main bars could not be guided together by the main bar arranging portion or the like. Therefore, when these upper and lower main bars are joined, it is difficult to position the main bars and the like, which is inconvenient. Accordingly, the present invention has been made in view of the above circumstances, and provides a reinforcing-bar laying device capable of conveniently joining main reinforcing bars.

[0004]

That is, a first aspect of the present invention is a vertical hole (3) dug down from the ground (2a).
A reinforcing bar assembly (5) used when building a reinforcing bar assembly (37) for concrete reinforcement with a plurality of main bars (37a) and distribution bars (37b), comprising a frame (6); A plurality of main bar guide means (7, 7P, 7Q, 52, 52P, 52Q) are provided on the frame (6), and the plurality of main bar guide means (7, 7P, 7Q, 5Q) are provided.
2, 52P, 52Q) are arranged so as to correspond to each other in the up-down direction so as to form a predetermined interval (M1) between the adjacent main bar guide means (7, 7P, 7Q, 52, 52P, 52Q). , The main bar guide means (7, 7P, 7
Q, 52, 52P, and 52Q) include a plurality of main bar guide portions (7
1, 71X) are provided so as to guide the main bar (37a) in the vertical direction, and main bar holding means (9) is provided below the frame (6) so as to be vertically movable, and the main bar holding means is provided. (9) The main bar end holding portion (31) is connected to the main bar guide means (7, 7P, 7Q, 52, 52P,
52Q) is provided in a form corresponding to the main-bar guide portions (71, 71X), and the frame (6) is provided with an elevating device (54), and the main-bar holding means (9) is provided so as to be movable and positioned vertically. You.

According to a second aspect of the present invention, in the reinforcing-bar laying device (5) according to the first aspect, each of the main-bar guide portions (71, 71X) can guide a plurality of main bars (37a). It is formed as follows.

According to a third aspect of the present invention, there is provided the reinforcing-bar laying device according to the second aspect, wherein each of the main-bar guide portions (71, 71X) includes a main-bar partition member (74, 7).
4X), and the main reinforcement partitioning members (74, 74)
X) is arranged such that the plurality of main bars (37a) inserted into the respective main bar guide portions (71, 71X) can be partitioned from each other.

Note that the numbers in parentheses indicate the corresponding elements in the drawings for the sake of convenience, and therefore, the present description is not limited to the description on the drawings. The same applies to the following operation columns.

[0008]

According to the first aspect of the present invention having the above-described structure, the main reinforcement (37a) which is fed downward toward the vertical hole (3).
When a new main bar (37a) is sequentially joined to the upper end of the main bar, the lower main bar (37a) is connected to the main bar guide means (7, 7P, 7Q, 52, 52P, 52Q). The lower main bar guide means (7, 7P, 7Q) is guided and the upper main bar (37a) is guided by the plurality of main bar guide means (7, 7P, 7Q, 52, 52P, 52).
Q) Upper main bar guide means (52, 52P, 5)
2Q), whereby the upper and lower main bars (37a, 37a) are positioned relative to each other.

In a second aspect of the present invention, a plurality of main bars (37a) are bundled and built.

In the third aspect of the present invention, the main reinforcements (37a, 37a) adjacent to each other in the main reinforcement guides (7, 7P, 7Q, 52, 52P, 52Q) by the main reinforcement partitioning members (74, 74X). ) Are separated from each other and do not intersect irregularly.

[0011]

FIG. 1 is a partially cutaway perspective view showing a state of a pile construction site where a reinforcing bar is erected using one embodiment of a reinforcing bar erection device according to the present invention. FIG. FIG. 3 is a perspective view showing the vicinity of a beam unit of the reinforcing bar embedding device shown in FIG.
Is a side view showing a frame of the reinforcing bar erection device shown in FIG. 1, FIG. 4 is a view as viewed from an arrow I in FIG. 3, and FIG. 5 is an enlarged view of a portion of the upper gauge disk shown in FIG. 6 is a sectional view taken along the line X1-Y1 of FIG. 3, FIG. 7 is an enlarged view of the lower gauge disk shown in FIG. 6, FIG. 8 is a schematic view showing the relationship between the wire drum and the pulley, and FIG. 3 is a sectional view taken along line X2-Y2 of FIG.
10 is a diagram showing the lower frame frame mounted on the bottom of the hole, FIG. 11 is an enlarged cross-sectional view showing the lower frame frame mounted on the bottom of the hole, and FIG. FIGS. 13 (a) to 13 (c) are views showing the procedure of the work of installing the distribution muscles, and FIG. 14 is a view showing a state in which the pulley is stored in the frame shown in FIG. Illustrated diagram, FIG.
FIG. 16 is a view showing a lower gauge disk configured in another form, FIG. 16 is a view showing a lower gauge disk configured in another form, and FIG. FIG. 18, FIG. 18 is a view showing an upper gauge disk configured in another form, FIG. 19 is a view showing a flange section configured in another form, and FIG. FIG. 21 is a sectional view showing a state in which the lower frame having the flange shown in FIG. 20 is placed on the bottom of the hole.

As shown in FIG. 1, a vertical hole 3 for later forming a pile 30 is formed in a site 1 where a pile is being constructed.
The hole 3 is formed into a columnar shape having a predetermined diameter D1 in a shape dug into the ground 2 from below, and a mortar 36 for temporary support is provided on a side wall 3c of the vertical hole 3 in a wellhead 3 serving as a mouth portion of the vertical hole 3.
a and is connected to the hole bottom 3b (shown in FIGS. 10, 11 and the like) by a circular spraying. Further, in the site 1, the reinforcing bar building device 5 is provided with a reinforcing bar cage 37 which is a reinforcing bar assembly for the above-mentioned pile 30, that is, reinforcing steel for reinforcing the concrete.
The reinforcing rod cage 37 is formed so as to have a cylindrical overall appearance. Reinforcing bar 37 has a plurality of main bars 37a arranged along the side wall 3c of the vertical hole 3 in such a manner that each bar extends in the vertical direction, that is, vertically, and each of the reinforcing bars 37 extends laterally so as to intersect with the plurality of main bars 37a. , These plural main bars 37
a, and the reinforcing bar cage 37 is now connected to the vertical hole 3 while the main reinforcing bar 37a and the power reinforcing bar 37b are connected via the reinforcing bar building device 5. It is being built inside. Note that the force distribution bars 37b are each formed in a semi-circular shape (not shown), for example, to be carried into the site 1 (two not-shown). Then, one force distribution bar 37b is formed by lap welding in a circular shape.

As shown in FIGS. 1 to 3, the reinforcing-bar laying device 5 has a frame 6. The frame 6 includes a frame body 6 a and four installations provided around the frame body 6 a. It has legs 60. That is, each installation leg 60 has a column 61, and the column 61 is supported upright on the ground 2a via each leg 61a, which is the lower end thereof. Further, the frame body 6a has a lower gantry 50 assembled with a steel material or the like, and the lower gantry 50 and each column 61 are integrally connected via a beam main body 62a. That is, the lower frame 50 is supported by the four columns 61 via the four beam bodies 62a.
As shown in FIG. 2, a reinforcing plate member 63 having a vertical U-shaped vertical cross section is inserted into each beam main body 62a, and the beam main body 62a is inserted into the inverted U-shaped portion of the reinforcing plate member 63. The beam main body 62a and the reinforcing plate member 63 are fastened by detachable mounting members 63a (illustrated in FIG. 3) such as bolts and nuts. That is, the beam main body 62a is reinforced by the reinforcing plate member 63. The beam unit 62 is constituted by the beam main body 62a and the reinforcing plate member 63. Therefore, the frame main body 6a and each of the installation legs 60 are connected to each other via the beam unit 62. In addition, each beam main body 62a
The beam unit 62 in which the reinforcing plate member 63 is mounted on the beam main body 62a is formed of a plate-like member having a longitudinal direction of a cross section thereof arranged in a vertical direction. That is, the beam main body 62a
Alternatively, the beam unit 62 has a predetermined strength and the thickness in the horizontal direction is as small as possible.

At the lower end of the lower frame 50, a lower gauge disk 7 formed in a hollow disk shape is horizontally joined and provided, as shown in FIGS. In addition, a plurality of main bar arrangement portions 71 are formed at predetermined pitches P1 along the outer periphery of the lower gauge disk 7. The plurality of main bar arrangement portions 71 formed on the lower gauge disk 7 are formed in a form corresponding to the bar arrangement pitch of the main bar 37a to be erected, and in the embodiment, the formation pitch of the main bar arrangement portions 71 is about 5 cm. Is formed, the reinforcing bar pitch of the main bar 37a is 10,
The pitch can be selected from an integer multiple of 5, such as 15, 20 cm. Each main bar arrangement part 7 of the lower gauge disc 7
As shown in FIGS. 6 and 7, each of the main bars 37a has a main bar 37a having a diameter corresponding to the bar main bar diameter of the pile 30. Each main bar 37a has a main bar 37a.
Can be held movably in a vertical direction which is a direction intersecting the plane of FIGS. 6 and 7, that is, can be guided. Further, a stopper 72 made of a leaf spring or the like is provided on the lower gauge disc 7 as a main bar fixing member.
1 is provided on each main bar arranging portion 71, and the stopper 72 is provided such that one end thereof is fixed to the lower gauge disk 7 by a plate 73 (see FIGS. 1 and 3). 6, the stopper 72 and the plate 73 are omitted for the sake of simplicity.) Each of the stoppers 72 can be flexed freely only toward the inner side, that is, toward the main bar placement portion 71, as shown by the dashed line in FIG. 7. The main bar 37 is attached to each of the plurality of main bar arrangement portions 71.
a can be freely inserted in the horizontal direction (that is, can be inserted in the direction of arrow A in FIG. 7).

As shown in FIGS. 1, 3, and 6, four support columns 51 are provided on the lower gantry 50. The support columns 51 are provided with the above-described lower gauge disk. 7, a hollow disk-shaped upper cage disk 52 having substantially the same configuration as that of FIG. That is, as shown in FIG. 3 and FIG.
A plurality of main bar arrangement portions 71X are provided with the lower gauge disk 7.
Are formed at every predetermined pitch P1 as in the case of.
The upper gauge disk 52 and the lower gauge disk 7
The positions of the main bar arrangement portions 71 and 71X correspond one-to-one in the vertical direction. As shown in FIG. 5, a main bar 37a is provided in each of the main bar arranging portions 71X of the upper gauge disk 52 so as to be vertically movable and one by one. A stopper 72X made of a spring or the like
It is provided for each X. The stopper 72X is provided such that one end thereof is fixed to the upper gauge disk 52 by a plate 73X (note that the stopper 72X and the plate 73X are shown in FIGS. 1, 3, and 4 for simplicity).
Has been omitted. ). And each stopper 72X
As shown by the dashed line in FIG.
The stopper 72X is capable of freely bending only toward the 1X side, whereby the stopper 72X is capable of horizontally inserting the main bar 37a into each of the plurality of main bar arranging portions 71X (ie, arrow A in FIG. 5). 'Direction so that it can be fitted). The above-described upper gauge disk 52 and lower gauge disk 7 constitute the main bar arrangement means 70. That is, the main bar arrangement means 70 provided on the frame main body 6a (therefore, the frame 6) is provided with the plurality of main bar arrangement portions 71 and 71X. In addition, a predetermined interval M1 is formed between the upper gauge disk 52 and the lower gauge disk 7, as shown in FIG.

As shown in FIGS. 1, 3 and 6, a predetermined winch unit 5 is provided on the lower mount 50.
3 are provided. The winch unit 53 receives a known drive source 55 such as an electric motor, and the power from the drive source 55 via a belt or the like, and receives the received power, about the horizontal rotation axis KJ in the directions indicated by arrows K and J in the figure. And a wire drum 56 rotatably driven. That is, as shown in FIGS. 6 and 8, the wire drum 56 can be driven to rotate around the rotation axis KJ in the directions indicated by arrows K and J in the drawing, and therefore, a circle extending along the rotation axis KJ. The wire drum 56 is provided with a brim-shaped partition plate 56a at a substantially central portion thereof. The wire drum 5 is partitioned by the partition plate 56a.
6 includes both sides of the partition plate 56a (that is, the rotation axis KJ).
Assuming that the directions parallel to the directions are arrows E and F, wire winding portions 56b and 56b are formed on the arrow E side and the arrow F side (that is, both right and left sides in FIG. 8). Each wire winding part 5
6b, the start end and the end side of one wire 11 are fed out by the rotational driving of the wire drum 56 in the direction of arrow K in the figure, and are wound by the rotational drive of the wire drum 56 in the direction of arrow J in the figure. It is wound with. Note that, between the wire winding portions 56b, 56b, the winding position KD of the wire 11 wound around each wire winding portion 56b is centered on the partition plate 56a regardless of the winding amount of these wires 11. Are arranged at positions symmetrical in the directions of arrows E and F.

Incidentally, the lower gantry 50 is provided with wire support means 44, as shown in FIGS. The wire support means 44 has a pulley support frame 8 erected on the lower gantry 50.
Is provided with a predetermined upper pulley 45 fixed thereto.
Note that the upper pulley 45 is disposed at a position above the wire drum 56. The wires 11 from the wire winding portions 56b of the wire drum 56 are connected to the upper pulley 45. A wire insertion hole 57 is formed near the center of the lower mount 50 so as to penetrate the lower mount 50 up and down. The wire insertion hole 57 is inserted through the center of the lower gauge disk 7. It is arranged above the hole 7a. Of the wires 11,
The portion between the wire drum 56 and the upper pulley 45 hangs below the lower gantry 50 and the lower gauge disk 7 so as to penetrate through the wire insertion hole 57 and the insertion hole 7a, and the wire 11 hangs down. As shown in FIGS. 3 and 8, a pulley 10 as a moving pulley is suspended from the site. That is, the wire 1 is
By pulling up the pulley 1, the pulley 10 is driven up in the vertical hole 3, and the pulley 10 is drawn down by the wire drum 56 so that the pulley 10 is lowered in the vertical hole 3. Accordingly, an elevating device 54 capable of vertically driving a lower frame 9 to be described later is constituted by the winch unit 53, the wire support means 44, the wire 11, and the pulley 10. In the present embodiment, each wire 11 that has reached the upper pulley 45 from the wire drum 56 via the pulley 10 is wound around the upper pulley 45, reaches the pulley 10 again, and is further wound around the pulley 10. It has reached the upper pulley 45 again. That is, the pulley 10 is suspended between the upper pulley 45 and the upper pulley 45 in a manner that one wire 11 is made up of six layers.
As much as 1 is made 6 times, a heavy load can be suspended as much as possible. On the other hand, below the wire support means 44 of the lower gantry 50, that is, at the position of the wire insertion hole 57 of the lower gantry 50, a storage space 65 is formed so as to penetrate vertically as shown in FIG. , Said pulley 10
Moves upward, and as shown in FIG.
5 can be stored. That is, the movement of the pulley 10 is caused by the movement of the storage space 65 and the lower gauge disc 7.
Between the lower part.

As shown in FIGS. 1 and 3, the pulley 10 has a lower frame 9 suspended therefrom. As shown in FIG. 3, the lower frame 9 has a suspension frame 46 suspended from the pulley 10, and the suspension frame 46 is connected to the frame via a plurality of suspension wires 47. The main body 49 is suspended. As shown in FIGS. 3, 9, and 10, the frame frame body 49 is formed in a horizontal annular shape having a diameter slightly smaller than the inner diameter of the vertical hole 3 in a state where the mortar 36 is sprayed. As shown in FIG. 11, the frame body 49 is attached to the bottom 3b of the vertical hole 3.
A plurality of mounting legs 9a (for example, 3
11, but only one is shown in FIG. 11, and the mounting legs 9a are omitted in FIGS. 3 and 10 for simplicity). Also, the frame body 4
9, a horizontal lower end surface 9b is formed at a position other than the mounting legs 9a.
, A plurality of rebar supporting jigs 32 are provided vertically. That is, each rebar supporting jig 32 has a horizontal rod-shaped jig main body 33, and a predetermined vertical direction is provided between an upper surface 33 a of the jig main body 33 and a lower end surface 9 b of the frame body 49. Is formed. The jig body 3
3 is detachably attached to the frame body 49 via fastening members 35, 35, such as bolts, at substantially both end portions thereof. In addition, the frame body 49 is
When it is placed on the hole bottom 3b of the vertical hole 3, a predetermined vertical working interval SK is formed between the jig body 33 and the hole bottom 3b by the vertical height of the mounting leg 9a. It has become so. As shown in FIGS. 9 to 11, on the upper end side of the frame body 49, a flange portion 9c is formed on the outer peripheral side of the frame body 49 so as to protrude horizontally in a brim shape. The main bar arrangement portions 9s (substantially the same as the above-described main bar arrangement portions 71 and 71X) are formed along the outer circumference at every predetermined pitch P1. In addition, the position of the main bar arranging unit 9s, the position of the main bar arranging unit 71, and the position of the main bar arranging unit 71X are vertically matched. A plurality of main bars 37a arranged along the side wall 3c of the vertical hole 3 are mounted on the frame main body 49 so as to penetrate the main bar arranging portion 9s formed on the flange portion 9c. The lower end portion 37c is bent in an L-shape. In other words, the horizontal portion of the lower end portion 37c passes through the rebar supporting interval TS between the upper surface 33a of the jig main body 33 and the lower end surface 9b of the frame main body 49 in an inward direction. It is placed and supported on the upper surface 33a of the main body 33. As described above, in the lower frame 9, the plurality of main bar arrangement portions 9 s of the flange portion 9 c, the upper surface 33 a of the jig main body 33 that forms the reinforcing bar support interval TS, and the lower end surface 9 b of the frame main body 49 are connected to the main bar. Lower part 3 of 37a
The main bar end holding portion 31 that can hold 7c.

As shown in FIG. 11, several hook holders 12 are mounted on the frame body 49, and each hook holder 12 has a hook engaging projection 12a.
Are provided in the radially inner side of the lower frame 9 so as to project downward. The hook holding tool 12 has a hook placement groove 12b formed between a portion connected to the frame body 49 and the hook engaging projection 12a.
b attached to the lower end of the suspension wire 47 in such a manner that the suspension ring 13 is hooked on the hook engagement protrusion 12a from below.
Are held in engagement. The suspension wire 47 and the suspension wheel 1
3, a level adjusting jack 15 is provided so as to adjust the length of the suspension wire 47 in the directions of arrows B and C in FIG. 11, as shown in FIG. The equilibrium state of the frame body 49 via the jack 15, ie, the main reinforcement 3 mounted and supported on the frame body 49
7a, so that the equilibrium state of the reinforcing bar cage 37 can be adjusted and maintained.

Further, the frame 6 of the reinforcing bar setting device 5
As shown in FIG. 13 (a), four hydraulic jacks (not shown) are provided so as to be vertically mounted on the bottom side of the lower gantry 50, and each hydraulic jack has a power distribution. The jig 17 for receiving the distribution muscles, which is the muscle holding means,
0, respectively. Each distributing muscle receiving jig 17 is vertically movable by a predetermined length via the hydraulic jack, and the distributing muscle receiving jig 17 is disposed directly below the hydraulic jack. The position where the jig 17 should be moved from the suspended position in the radially outward direction indicated by the arrow G in FIG. It has a shape that can be moved up to. A plurality of hooks 191 serving as a plurality of power distribution muscle holding portions are provided on the power distribution muscle receiving jig 17 such that a plurality of hooks 191 are formed at predetermined intervals in the vertical direction at a pitch corresponding to the reinforcement pitch of the power distribution muscles 37b. A plurality of hooks 191 arranged in the vertical direction of each distributing muscle receiving jig 17 are connected via a guide 19, and are directed inward and outward in the radial direction by operation of the guide 19. , In the directions indicated by arrows H and G in FIG. Then, the distribution-force receiving jig 17 is attached to each of the plurality of hooks 191 by one.
The individual force distribution bars 37b can be mounted and held.

As shown in FIG. 1, a crane truck 40 is arranged at the site 1 so as to be located near the vertical hole 3. Is attached and suspended. As shown in FIGS. 1 and 12, the main bar suspension 21 has three sheath tubes 22 in the embodiment, and inside each of the sheath tubes 22, a main bar insertion space 22 s which is a reinforcing bar insertion space. However, the main bar 37a is formed so as to be freely movable along the material axis direction of the main bar 37a (that is, up and down). The three sheath tubes 22 are connected via a connecting member 23 so as to be arranged in a horizontal direction at a pitch corresponding to the bar arrangement pitch of the main bars 37a.
The three sheath tubes 22 are suspended from the hook block 41 via a pulling wire 25 attached to a connecting member 23 and a bundling jig 26. Therefore, the connecting member 2
3, the pulling wire 25, the bundling jig 26, the three sheath tubes 22
It is configured to constitute the suspension engagement means provided in,
The main bar suspension 21 is suspended from the hook block 41 by the suspension engagement means.

As shown in FIG. 12, a clamp 27, which is a rebar clamp capable of holding the main bar 37a, is attached to the main bar suspension 21 below the three sheath tubes 22. Three pairs are provided on the suspension engaging means formed by the connecting member 23, the pulling wire 25, and the bundling jig 26 so as to form a pair, and each clamp 27 has a connecting wire 29 having a length L1. Are connected to and connected to the respective sheath tubes 22 in a form suspended from the connection member 23 via the connection member.
That is, when the main bar suspension tool 21 is suspended by the hook block 41 of the crane truck 40 by the suspension engagement means, each sheath tube 22 and each clamp 27
However, due to the weight of the clamp 27, a predetermined distance L1 can be held in the vertical direction. At this time, the three sheath tubes 22 are arranged so as to be interposed within the traction force of the crane. The two sheath tubes 22 and the three clamps 27 are arranged so as to be arranged in a vertical direction, whereby the main bar suspension 21 has a main bar 37a whose main member 37a has its material axis oriented in the vertical direction as shown in FIG. It can be held by.

Since the site 1 has the above configuration, when constructing the pile 30 at the site 1, the vertical holes 3
Is dug down by a predetermined depth so as to form a predetermined diameter D1 from a predetermined position on the ground 2a, and a mortar 36 is sprayed to a predetermined thickness on the side wall 3c. An operation of building the reinforcing bar cage 37 into the vertical hole 3 with the plurality of main bars 37a and the plurality of distribution bars 37b as a reinforcing bar assembly is performed. Therefore, first, the four installation legs 60
Is installed on the ground 2a so as to surround the wellhead 3a of the vertical hole 3 in which the steel cage 5 is to be built, as shown in FIG. Installs the reinforcing bar embedding device 5 in such a manner that it can descend in the vertical hole 3. At this time, the reinforcing bar setting device 5 is installed such that the center CL1 of the frame 6 matches the center CT1 of the vertical hole 3.

Therefore, first, the main bars 37 having a predetermined number of bars are arranged.
a is vertically held by the lower frame 9 in a form corresponding to the respective bar arrangement positions. Therefore, first, the main muscle insertion space 22 of each of the three sheath tubes 22 of the main muscle suspender 21.
In FIG. 1, the main bar 37 in a state of being laid down as shown in the right back of FIG.
a, and the clamp 27 is attached to a predetermined position of the main bar 37a (that is, a position that becomes lower when the main bar 37a is vertically extended). Thus, three clamps 2
After the three main bars 37a are gripped in the shape 7 and the binding jig 26 is engaged with the hook block 41 of the crane truck 40, the hook block 41 is moved upward by the crane operation. Then, the main bar suspension 21
Each of the clamps 27 holding the main bar 37a is connected to the connecting member 23 provided on the three sheath tubes 23,
7. The crane 4 is used as a hanging engagement means with the binding jig 26 suspended.
It hangs at 0 and becomes vertical. Thus, the main line 37
When a is raised vertically from a laid state, the three main bars 37
a rises in a state where horizontal movement is restrained by the three sheath tubes 22, and a vertical main bar 37a
The main reinforcement is suspended via three clamps 27 in a form held by the horizontal restraining force of the three sheath tubes 22 and the own weight of the three main reinforcements 37a so that the axial direction of the material is oriented in the vertical direction. It is in the form suspended by the tool 21. Thereby, as shown in FIG. 1, the three main bars 37a
The main bar suspension 21 is stably provided without bending the material axis of 7a.
And is suspended from the hook block 41 via.

In this state, the hook block 41 is further appropriately moved through the operation of the crane, and the three main bars 37 are moved.
a is set between the upper gauge disk 52, the lower gauge disk 7, and the lower frame 9 respectively. For this, first, the lower end portion 37c of each main bar 37a is held and mounted on the main bar end holding portion 31 of the lower frame 9, and then the upper end of the main bar 37a is connected to the upper gauge disk 52 and the lower The main bar arrangement portion 71 and the main bar arrangement portion 71X at predetermined positions of the gauge disk 7 are inserted and arranged. At this time, stoppers 72, 7 are attached to the main bar arrangement portions 71, 71X.
Since 2X is provided, the main bars 37a are pushed by the main bars 37a in the directions of arrows A and A 'in FIG.
71X from the horizontal direction. Then, the main bars 37a are inserted into the stoppers 72 and 72X so as to be restored to the plates 73 and 73X by the spring force held by the stoppers 72 and 72X, as shown by the solid lines in FIGS. 7 and 5. The main muscle placement sections 71 and 71X are immediately closed. That is, the main bar 37a is prevented from coming off from the main bar arranging portions 71, 71X outward in the radial direction. Accordingly, the main bar 37a is held in the main bar arranging portions 71 and 71X so as to be movable up and down with respect to the main bar arranging portions 71 and 71X, and thus to be vertically guided.

In this manner, three main bars 32a are sequentially held and mounted on the main bar end holding portion 31 of the lower frame 9 in a row, and the main bars 32a are arranged on the main bar arranging portions 71 and 71X of the upper gauge disk 52 and the lower gauge disk 7, When the main bar suspension 21 is lowered by the crane operation, the three main bars 37a whose suspension support state by the main bar suspension 21 has been released are released.
Is vertically held in the lower frame 9 by its own weight. Then, the three clamps 27 of the main bar suspension 21 are sequentially removed from the main bar 37a. Further, the hook block 41 is raised by the crane operation. Then, the main muscle suspender 21 in a state where the clamp 27 is removed from the main muscle 37a is in a form in which the three sheath tubes 22 move relatively upward with respect to the main muscle 37a via the respective main muscle insertion spaces 22s. It is detached from the main bar 37a so as to escape upward. Therefore, if the main bar suspension 21 is used, the main bar 37a can be easily made vertical only by attaching the clamp 27 to the main bar 37a in a laid state and operating the crane. Also, by simply removing the clamp 27 from the vertical main bar 37a, the main bar suspension 21 can be easily removed from the main bar 37a.
, And these operations do not involve complicated work at a high place or work.

By repeating the operation of setting the main reinforcing bars 37a between the upper gauge disk 52, the lower gauge disk 7 and the lower frame 9 in this manner, the main reinforcing bars 37a having a predetermined number of reinforcing bars are moved to their respective bar arranging positions. In a form corresponding to the above, when vertically mounted and held on the lower frame 9, as shown in FIG. 11, the level adjusting jack 15 is driven and operated to adjust the length of each suspension wire 47.
The level of the lower frame 9 is adjusted. by this,
A predetermined number of main bars 3 mounted and held on the lower frame 9
7a are balanced so that each of them has a shape in which the axial direction of the material is oriented in the vertical direction. Then, next, the work of connecting the force distribution bars 37b to the predetermined number of main bars 37a is performed.

At the time of connecting the distribution bars 37b to the main reinforcement 37a, the distribution bars receiving jig 17 is used.
The main muscle 37b is connected to the distribution muscle 37b located at the lowermost part of
When connecting to a, the lower end of the force-receptor receiving jig 17 is set to the lower end of the main bar 37a. Then, when connecting the force-supplying muscle 37b located above this to the main muscle 37a, as shown in FIG. 13 (a), each force-supplying muscle 37b already connected to the main muscle 37a is placed above the force-receiving muscle 37b. The jig 17 is positioned and set. The positioning of the power distribution muscle receiving jig 17 is performed by setting the hook 191 at the lowermost end to be engaged with and held by the power distribution muscle 37b and the like already connected to the main muscle 37a. The operation is performed by driving and operating four hydraulic jacks (not shown) which suspend the receiving jig 17.

Each of the four force-receiving bars receiving jigs 17 positioned in this manner is arranged inside a plurality of main bars 37a formed in a ring shape by being held on the lower frame 9. . Then, as shown in FIG. 13 (b), the force receiving jig 17 is slightly moved outward in the radial direction, and the plurality of hooks 1 are moved through the guide 19.
The plurality of hooks 191 are arranged so as to protrude in the direction of arrow G in FIG. 13 outside the main bar 37a. At this time, the plurality of hooks 191 of the distribution bar receiving jig 17 are used.
Of the hook 191 located at the bottom of the
When the jig 17 is hooked on the power distribution line 37b which has been connected to the main line 37a and is located at the uppermost position, the main line 37a
It is accurately held on the inner side of. At this time, since the hanging tool 191 is provided in the power distribution muscle receiving jig 17 in a form corresponding to the reinforcement pitch of the power distribution muscle 37b, the position at which the power distribution muscle 37b is to be arranged is determined by a plurality of hooks. It is immediately detected by the arrangement position of the tool 191.

Therefore, when the distributing muscle receiving jig 17 is set so that the hook 191 protrudes outside the main reinforcing bar 37a, the semicircular distributing muscle 37b is set.
Then, as shown in FIG. 13 (b), it is engaged and held in such a manner that it is hooked on each hook 191 of the distribution force receiving jig 17. Then, the main muscle 37a is attached to the main muscle 37a by wrapping the two ends of the two semicircular force muscles 37b so that each of the muscles 37b becomes circumferential. 37
Each is welded and connected so as to intersect with a.
Then, the connecting operation of the force distribution bars 37b to the plurality of main bars 37a is repeated, so that the reinforcing bar cage 3 as the reinforcing bar assembly is formed.
7 can be formed, and the rebar assembling work for this
It can be carried out outside the mine on the ground 2a near the wellhead 3a.

In this manner, the power distribution bars 37 engaged with the hooks 191 of all the stages of the power distribution line receiving jig 17 set in advance.
13b, welding operation of the power distribution bars for one cycle is completed, and then, as shown in FIG. 13 (c), the power distribution line receiving jig 17 is connected to the main reinforcements 37a (that is, during assembly). 37). This includes the jigs 1
Release the hydraulic jack (not shown) hanging the 7
Each of the force receiving jigs 17 is slightly moved downward. Then, the distributing muscle receiving jig 17 immediately moves the main reinforcing rod 3.
As shown in FIG. 13 (c), the member is restored to the inside of the main bar 37a in the form of returning to the arrow H direction in the drawing, which is on the inner side in the radial direction from 7a.

In this manner, the main muscles 37b are connected to the main muscles 37b by the hooks 191 of all the steps of the jigs 17 for receiving the main muscles.
When the work for connecting to a is performed, the rebar cage assembling work corresponding to the length of the distributing muscle receiving jig 17 has progressed. Thus, while performing the work of assembling the reinforcing bar cage 37 using the distributing bar receiving jig 17 in this manner, the lifting device 54 is driven in a predetermined cycle, and the wire 11 is drawn out from the wire drum 56. The lower frame 9 is gradually lowered into the vertical hole 3. Then, the lower frame 9 is mounted and held on the lower frame 9.
A predetermined number of main bars 37a set between the upper gauge disk 52 and the lower gauge disk 7 together with the distribution bars 37b connected to the main bars 37a as described above, It is lowered into the vertical hole 3 as a part. Therefore, when the operator drives and operates the lifting device 54 on the ground 2a near the wellhead 3a, the main muscle 3
In the state where the reinforcing bars 7a and the distribution bars 37b are formed in the reinforcing bar cage 37, it is possible to perform the work of erection in the vertical hole 3. When the assembled portion of the reinforcing bar cage 37 is lowered into the vertical hole 3 in this manner, the main reinforcing bars 37a forming the reinforcing bar cage 37 are connected to the main reinforcing bar placement portions of the upper gauge disk 52 and the lower gauge disk 7. 71X and 71X, and move downward relative to 71X.
By providing the stoppers 72X, 72 on the 71, the respective main bars 37a are connected to the main bar placement portions 71X, 7X.
It is possible to smoothly move downward with respect to the upper gauge disk 52 and the lower gauge disk 7 without deviating from the radial direction outward from the first gauge disk 52. Also, the main line 37a descends,
Even if the upper end of the main bar 37a is disengaged downward from the main bar arranging portion 71X of the upper gauge disk 52, the main bar 37a is connected to the lower gauge disk 7 below the upper gauge disk 52.
Of the main bar 37a
This is convenient because it is possible to guide as wide as possible.

Thereafter, when the upper end of the main bar 37a already mounted via the lower frame 9 is positioned between the upper gauge disk 52 and the lower gauge disk 7, the main bar 37a is further interposed via the main bar hanger 21. New main bar 37a
One by one, this time, only the upper gauge disk 52 is set. The main reinforcing bar 37a set only on the upper gauge disc 52 is moved until the lower end of the main reinforcing bar 37a is aligned with the upper end of the already mounted main reinforcing bar 37a.
It is lowered as it is via the main bar suspension 21 while being guided by the main bar arranging portion 71X of the upper gauge disk 52. Then, the main bars 37a and 37 corresponding to the alignment are provided.
a is sequentially joined via a coupler or the like (not shown).
When a new main bar 37a is sequentially joined to the upper end side of the main bar 37a in this manner, the lower main bar 37a is guided by the lower gauge disk 7, and the upper main bar 37a is connected to the upper gauge disk. 52 so that the upper and lower main streaks 37a, 37a
Position each other. The joining work between the upper and lower main bars 37a, 37a is performed via the space M1 between the lower gauge disk 7 and the upper gauge disk 52. After the predetermined number of new main bars 37a have been joined in this manner, the lower frame 9 is lowered by the driving operation of the lifting / lowering device 54, and the force-feeding bars 37b are connected to these newly joined main bars 37a. The work of assembling the 37 is further extended. In this way, the new main bars 37a of the predetermined number of bars are arranged in the main bar arranging portion 71 of the upper gauge disc 52 in a form corresponding to each bar arranging position.
X, the set main bars 37a are joined on the already mounted main bars 37a, and the force distribution bars 37b are connected to the predetermined number of new main bars 37a, and the reinforcing bar cage 37 is extended and assembled. The operation of lowering the lower frame 9 by the driving operation of the lifting / lowering device 54 by the length of the assembled reinforcing bar cage 37, that is, sequentially feeding the assembled reinforcing bar cage 37 into the vertical hole 3, is repeated in a predetermined cycle. In this way, the main bar 37a and the distribution bar 37b
Can be built in the state of the reinforcing bar cage 37 to which these are connected. Then, the rebar cage assembly and the erection work can be performed on the ground 2a near the wellhead 3a, and a worker descends into the pit of the vertical hole 3 for rebar assembly, or a temporary scaffold is placed on the vertical hole 3 to raise the height. There is no need to perform any work.

Further, when the reinforcing bar cage 37 of a predetermined length is erected and installed in the vertical hole 37 in the assembled state in this way, the lower frame 9 in which the vertical hole 3 is lowered for the purpose of mounting the reinforcing bar is installed. Reaches the hole bottom 3b as shown in FIG. Thus, the reinforcing cage 37 is supported by the hole bottom 3b via the mounting legs 9a of the lower frame 9.
Then, the fastening member 35 of the reinforcing bar support jig 32 of the lower frame 9 is removed by the worker at the hole bottom 3b, and the jig is used in the form of using the working interval SK between the jig body 33 and the hole bottom 3b. The main body 33 is removed and collected. Then, since the horizontal portion of the lower end portion 37c of the main bar 37a held by the lower frame 9 no longer supports the horizontal portion of the main bar 37a, the main bar 37a falls and the horizontal portion of the lower end portion 37c becomes a hole bottom. 3b (the jig main body 33 is
May not be collected in a form laid on the lower end portion 37c. ). Next, when the lifting device 54 is driven to raise the lower frame 9, the main bar end portion holding portion 3 of the main bar 37 a is moved.
Since the holding by 1 has already been released, the lower frame 9 is lifted and collected in such a manner that the main streaks 37a are left behind. In other words, most of the members constituting the lower frame 9 are recovered, and thus can be diverted at another site, which is convenient.

Next, when the reinforcing bar setting device 5 is removed from the vertical hole 3, the work of placing concrete in the vertical hole 3 can be performed immediately. Further, the removed reinforcing-bar building device 5 can be diverted to the vertical hole 3 in which the reinforcing bar cage 37 has not yet been built, and a new reinforcing-bar building operation can be started. Therefore, pile construction can be performed with good construction efficiency. In addition, such a relocation of the rebar embedding device 5,
The crane truck 40 is used to set the main reinforcing bar 37a to the reinforcing bar erection device 5 as described above, but the reinforcing bar embedment device 5 is installed or moved without holding the reinforcing bar cage 37. Since the main bars 37a are set three by three, a small crane truck 40 is sufficient. Further, the reinforcing bar cage 37 is assembled near the wellhead 3a, and before the assembling, the main bar 37a and the semicircular force bar 3a are assembled.
7b can be stored in a stacked state. Therefore, the installation of the crane truck 40 and the main reinforcement 37
a, a wide area is not occupied for storing the reinforcing bars such as the distribution bars 37b.

In the above-described embodiment, the cylindrical reinforcing bar 37 is formed in the cylindrical vertical hole 3 along the side wall 3c.
Has been described, but the shapes of the vertical hole 3 and the reinforcing bar cage 37 are not limited thereto. Therefore, a reinforcing bar assembly such as the reinforcing bar cage 37 may be built in the middle of the vertical hole 3. Further, a reinforcing bar assembly having a plate-like overall shape may be built in a wall-shaped vertical hole.

Further, the reinforcing bar erection device according to the present invention
It can also be applied when the main bars are bundled and built. However, in that case, the lower gauge disk 7 and the upper gauge disk 5
2. The flange portion 9c of the main bar end holding portion 31 is configured differently from the above-described embodiment. For example, when two main reinforcing bars 37a are bundled and built in a line in the circumferential direction of the reinforcing bar cage 37, a plurality of lower gauge disks 7P substantially the same as the lower gauge disks 7 as shown in FIG. Main bar arrangement portions 71 are formed at predetermined pitches along the outer periphery of the lower gauge disk 7P. However, each main bar arranging portion 71 is provided with a partition plate 74 that divides the main bar arranging portion 71 into two portions 71a, 71a arranged in the circumferential direction, and the main bars 37 are provided at these portions 71a, 71a.
a and 37a can be accommodated one by one. That is, the portions 71a, 71 of one main bar arrangement portion 71
The main muscles 37a, 37a accommodated in a are in a bundled state. In addition, appropriate stoppers 72 are provided on the lower gauge disc 7P, two for each main bar arrangement portion 71,
That is, one main bar arrangement portion 71 is provided for each portion 71a. Also, in the upper cage disk 52P, similarly to the lower gauge disk 7P, as shown in FIG. 17, a plurality of main bar arrangement portions 71X are formed at predetermined intervals along the outer periphery of the upper cage disk 52P. . However, each main bar arranging portion 71X has
Is divided into two parts 71Xa, 71Xa arranged in the circumferential direction, and a partition plate 74X is provided, and the main bars 37a, 37a can be accommodated one by one in each of these parts 71Xa, 71Xa. . That is, the main muscles 37a, 37a accommodated in the portions 71Xa, 71Xa of one main muscle arrangement portion 71X are in a bundled state. The upper gauge disk 52P is provided with two appropriate stoppers 72X for each main bar arrangement portion 71X, that is, one for each portion 71Xa of one main bar arrangement portion 71X. In addition, as shown in FIG. 19, the main bar arranging portions 9s are formed at predetermined intervals along the outer periphery of the flange portion 9cP of the main bar end holding portion 31, as shown in FIG. Although a partition plate or the like is not provided in the main bar arranging portion 9s, two main bars 37a are held in one main bar arranging portion 9s. And the lower gauge disk 7 described above
Between P, the upper cage disk 52P, and the flange portion 9cP, the position of the main bar arranging portion 71, the position of the main bar arranging portion 71X, and the position of the main bar arranging portion 9s are vertically matched. By employing the lower gauge disk 7P, the upper cage disk 52P, and the flange portion 9cP described above, the work of bundling and building the main reinforcing bars 37a two by two in the circumferential direction of the reinforcing bar cage 37 can be easily performed. In addition, the main bar arranging portion 71 of the lower gauge disk 7P, the main bar arranging portion 71X of the upper cage disk 52P, and the flange portion 9
By holding only one main bar 37a in each of the main bar arranging portions 9s of the cP, the work of building the main bar 37a without bundling it can also be easily performed.

For example, in a case where two main reinforcing bars 37a are bundled and built in a line in the radial direction of the reinforcing bar cage 37,
As shown in FIG. 16, the lower gauge disk 7 </ b> Q includes a plurality of main bar arrangement portions 71 substantially similar to the lower gauge disk 7.
Are formed at a predetermined pitch along the outer circumference of the lower gauge disk 7Q. However, in each main bar arrangement part 71,
The main bars 37a, 37a can be accommodated in a form arranged in the radial direction. That is, the main bars 37a, 37a accommodated in one main bar placement section 71 are in a bundled state. In addition, an appropriate stopper 72 is provided on the lower gauge disk 7Q for each main bar arrangement portion 71. As shown in FIG. 18, in the upper cage disk 52Q, a plurality of main bar arrangement portions 71X are formed at predetermined pitches along the outer periphery of the upper cage disk 52Q substantially similarly to the lower gauge disk 7Q. . However, each main bar arrangement part 7
In 1X, main bars 37a, 37a can be accommodated in a form arranged in the radial direction. That is, one main bar arrangement unit 71
The main muscles 37a, 37a housed in X are in a bundled state. The upper gauge disk 52Q is provided with a suitable stopper 72X for each main bar arrangement portion 71X. The flange portion 9c of the main bar end holding portion 31
In Q, as shown in FIG. 20, main bar arrangement portions 9 s are formed at predetermined pitches along the outer periphery. One main bar arrangement portion 9s holds two main bars 37a. And the lower gauge disk 7Q described above,
Between the upper cage disk 52Q and the flange portion 9cQ, the position of the main bar placement portion 71 and the position of the main bar placement portion 71X,
The position of the main bar arrangement portion 9s is vertically aligned. The main bar end holding portion 3 having the flange portion 9cQ.
As shown in FIG. 21, the holding state of the bundled main streaks 37a, 37a in FIG. 1 is, for example, arranged such that bent horizontal portions of lower end portions 37c, 37c of the main streaks 37a, 37a are vertically overlapped with each other. The above-described lower gauge disk 7Q, upper cage disk 52Q, flange portion 9c
By adopting Q, the work of bundling and building the two main bars 37a two by two in the radial direction of the reinforcing bar cage 37 can be easily performed. The main bar 37a is not bundled by holding only one main bar 37a in each of the main bar arranging portion 71 of the lower gauge disk 7Q, the main bar arranging portion 71X of the upper cage disk 52Q, and the main bar arranging portion 9s of the flange portion 9cQ. The work of building can be done easily.

[0039]

As described above, according to the first aspect of the present invention, a main hole such as a plurality of main bars 37a and a distribution bar 3 are inserted into a vertical hole such as a vertical hole 3 dug from the ground such as the ground 2a.
Reinforcing cage 37 for reinforcing concrete with distribution bars such as 7b
In a reinforcing-bar laying device used when building a reinforcing-bar assembly such as the above, a frame such as a frame 6 is provided, and a plurality of lower gauge disks 7, 7P, 7Q, upper gauge disks 52, 52P, 52Q, etc. A plurality of main muscle guide means are provided, and the plurality of main muscle guide means are arranged so as to correspond to each other in the vertical direction so as to form a predetermined interval such as an interval M1 between the adjacent main muscle guide means. A plurality of main bar guides such as a plurality of main bar arranging portions 71 and 71X are provided so as to be able to guide the main bars in the vertical direction, respectively, and a lower frame 9 is provided below the frame.
A main bar holding means such as a main bar end holding unit such as a main bar end holding unit 31 is provided on the main bar holding unit.
The main-bar holding means is provided in a form corresponding to the main-bar guide portion of each of the main-bar guiding means, and the frame is provided with an elevating device such as the elevating device 54 so that the main-bar holding means can be vertically moved and driven and positioned. The reinforcing bars are assembled by connecting the force bars to the plurality of main bars held in a predetermined reinforcing state by the operation of the reinforcing bars. Can be built. Further, in the rebar embedding device according to the present invention, when the main rebar is fed into the vertical hole, the main rebar is guided by the main rebar guide portions of the plurality of main rebar guide means. Therefore, when a new main bar is sequentially joined to the upper end of the main bar to be fed, the lower main bar is guided by the lower main bar guide unit of the plurality of main bar guide units, and Of the plurality of main muscle guide means is guided by the upper main muscle guide means, whereby positioning between the upper and lower main muscles is performed. The joining operation between the upper and lower main bars can be performed via the space between the plurality of main bar guide means. That is, the use of the reinforcing-bar laying device according to the present invention makes it possible to conveniently join the main reinforcing bars. Further, by providing a plurality of main bar guides, the state of the main bars or the state of the rebar assembly mounted on the reinforcing bar erection device is further improved as compared with the case where only one main bar guide is provided. Stabilize. For example, even during the above-described main bar joint work or when the reinforcing bar assembly is settled down, the reinforcing bar assembly is advantageous because it keeps a stable posture without twisting or rotating in the circumferential direction.

According to a second aspect of the present invention, in the reinforcing-bar laying device according to the first aspect, each of the main-bar guide portions is formed so as to guide a plurality of main bars. In addition to the effects of the present invention, the rebar setting device according to the second aspect of the present invention can be applied to a case where a plurality of main rebars are bundled as well as a single-row rebar, so that it is convenient.

According to a third aspect of the present invention, in the reinforcing-bar laying apparatus according to the second aspect, each of the main-bar guide portions has a main-bar partition member such as partition plates 74 and 74X. Since the members are arranged so that the plurality of main bars inserted into the respective main bar guides can be partitioned from each other, in addition to the effect according to the second invention, the main bar partitioning member allows the main bars to be adjacent in each main bar guide. Irregular crossing of the main muscles is prevented as much as possible, which is convenient.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a state of a pile construction site in which a reinforcing bar is erected using an embodiment of a reinforcing bar erection device according to the present invention.

FIG. 2 is a perspective view showing the vicinity of a beam unit of the reinforcing-bar laying device shown in FIG.

FIG. 3 is a side view showing a frame of the reinforcing-bar laying device shown in FIG. 1;

FIG. 4 is a view taken in the direction of the arrow I in FIG. 3;

FIG. 5 is an enlarged view of a portion of the upper gauge disk shown in FIG.

FIG. 6 is a sectional view taken along line X1-Y1 of FIG. 3;

FIG. 7 is an enlarged view of the lower gauge disc shown in FIG. 6;

FIG. 8 is a schematic diagram showing a relationship between a wire drum and a pulley.

FIG. 9 is a sectional view taken along line X2-Y2 in FIG. 3;

FIG. 10 is a diagram showing the lower frame frame in a state where the lower frame is placed on the bottom of the hole;

FIG. 11 is an enlarged cross-sectional view showing the lower frame in a state where the lower frame is placed on the bottom of the hole.

FIG. 12 is a perspective view showing a main bar hanging device.

FIGS. 13 (a) to 13 (c) are diagrams showing a procedure of a work of installing a power distribution muscle.

FIG. 14 is a view showing a state in which pulleys are stored in the frame shown in FIG. 3;

FIG. 15 is a view showing an alternative configuration of the lower gauge disc.

FIG. 16 shows a lower gauge disc configured in another manner.

FIG. 17 shows an alternately configured upper gauge disc.

FIG. 18 shows an alternative configuration of the upper gauge disc.

FIG. 19 is a diagram showing a flange portion configured in another form.

FIG. 20 is a diagram showing a flange portion configured in another form.

FIG. 21 is a sectional view showing a state where the lower frame having the flange shown in FIG. 20 is placed on the bottom of the hole;

[Explanation of symbols]

 2a ... Ground 3 ... Vertical hole 5 ... Reinforcing bar installation device 6 ... Frame 7 ... Main bar guide means (lower gauge disc) 7P ... Main bar guide means (lower gauge disc) 7Q ... Main bar guide means (lower gauge) 9) Main bar holding means (lower frame) 31 Main bar end holding portion 37 Rebar assembly (rebar cage) 37a Main bar 37b Distributing bar 52 Main bar guide means (upper gauge 52P ... main bar guide means (upper gauge disk) 52Q ... main bar guide means (upper gauge disk) 54 ... elevating device 71 ... main bar guide unit (main bar placement unit) 71X ... main bar guide unit (main bar placement unit) ) 74: Main reinforcement partitioning member (partition plate) 74X: Main reinforcement partitioning member (partition plate) M1: Interval

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeki Komiyama 1-6-14 Akasaka, Minato-ku, Tokyo Tokyo Electric Power Company UHV Transmission & Substation Construction Facility (72) Inventor Sakae Nakai 518-1, Komagaki, Nagareyama City, Chiba Prefecture No. Mitsui Construction Co., Ltd. (72) Inventor Masataka Uozumi 518-1, Komagaki, Nagareyama-shi, Chiba Prefecture Mitsui Construction Co., Ltd. (72) Inventor Yuji Nagano 518-1, Komagaki, Nagareyama-shi, Chiba Mitsui (56) References JP-A-7-216877 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02D 5/22-5/80 103

Claims (3)

(57) [Claims] A rebar-building device used for building a rebar assembly for reinforcing concrete with a plurality of main bars and distribution bars in a vertical hole dug from the ground, comprising: a frame; The main muscle guide means are provided, and the plurality of main muscle guide means are arranged so as to correspond to each other in the up-down direction so as to form a predetermined interval between the adjacent main muscle guide means, and a plurality of main muscle guide means are provided for each of the main muscle guide means. Main bar guides are provided so as to be able to guide the main bars in the up and down direction, respectively. Main bar holding means are provided below the frame so as to be movable up and down. A reinforcing bar is provided in a form corresponding to the main bar guide portion of the main bar guide means, and an elevating device is provided on the frame so that the main bar holding means is vertically movable and can be driven and positioned freely. Only device. 2. The reinforcing bar setting device according to claim 1, wherein each of the main bar guide portions is formed so as to guide a plurality of main bars. 3. The main bar guide portion has a main bar partition member, and the main bar partition member is arranged so as to partition a plurality of main bars inserted into the respective main bar guide portions from each other. The reinforcing-bar laying device according to claim 2, characterized in that: