JPH09125379A - Reinforcement installation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save members to the utmost by redeploying the members for other purpose. SOLUTION: A win reinforcement arrangement means 70 is provided on a frame 6 and a plurality of main reinforcement arrangement parts 71, 71X are so provided in the main reinforcement means 70 that main reinforcements 37a are vertically guided respectively. A bottom frame 9 is provided in the bottom of the frame 6 in such a state as moving vertically, the bottom frame 9 has a frame main body 49, a main reinforcement end holding part 31 is provided in the frame main body 49 in such a state as detachably holding the bottom part 37c of the reinforcements 37a in a reinforcement basket 37 to be installed, and an elevating device 54 is so provided in the frame 6 that the frame main body 49 is vertically moved, driven and positioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar erection device suitable for application when constructing deep foundation piles by using cast-in-place concrete.

[0002]

2. Description of the Related Art When building a reinforcing bar for reinforcing concrete piles in a vertical hole, there is a reinforcing bar building device that can build a reinforcing bar in a small space without the need for a large crane or truck. It is desired, and as an example,
There is a reinforcing bar building device disclosed in Japanese Patent Application No. 7-216877.

[0003]

By the way, a rebar cage assembled by applying such a rebar building device descends in the vertical hole together with main bar holding means for supporting the rebar cage in the vertical hole, It is installed at the bottom of the hole. However, since the main bar holding means supports the reinforcing bar cage, it is difficult to leave the reinforcing bar cage at the bottom of the hole and collect the main bar holding means on the ground. Since the main bar holding means cannot be recovered, it has been impossible to divert the main bar holding means. Therefore, in view of the above circumstances, the present invention provides a reinforcing bar embedding device capable of diverting members such as the main bar holding means and saving the members as much as possible.

[0004]

That is, the first aspect of the present invention is to provide a vertical hole (3) dug down from the ground (2a).
In the reinforcing bar building device (5) used when building a reinforcing bar assembly (37) for concrete reinforcement by a plurality of main reinforcing bars (37a) and distribution bars (37b), a frame (6) is provided, The main muscle reinforcing means (7) is attached to the frame (6).
0) is provided, a plurality of main reinforcement guide portions (71, 71X) are provided in the main reinforcement arrangement means (70) so as to be able to guide the main reinforcement (37a) in the vertical direction, respectively, and below the frame (6). The main bar holding means (9) is provided movably up and down, and the main bar holding means (9) has a main bar holding frame (49), and the main bar holding frame (49) has main bar end supporting means (31). ), The rebar assembly (3
The end portion (37c) of the main bar (37a) of 7) is provided so that it can be held and released, and the lifting device (54) is attached to the frame (6).
The main bar holding frame (49) is provided so as to be vertically movable and positionable.

A second aspect of the present invention is the reinforcing bar building apparatus (5) according to the first aspect, wherein the main bar holding frame (49) is formed in an annular shape, and the main bar holding frame (49). Is a plurality of parts (49a) in the circumferential direction
It can be freely disassembled and assembled.

A third aspect of the present invention is the reinforcing bar building device (5) according to the first aspect, wherein the main bar holding frame (49) has a main body (48) formed in an annular shape. The main bar end supporting means (31) is provided with the main bar (37).
a) is housed so that the main body (4) can be accommodated in a shape corresponding to the main bar guide portions (71, 71X) of the main bar arrangement means (70).
8) a plurality of gauge grooves (9s) and the end portion (3) of the main bar (37a) of the reinforcing bar assembly (37) to be built.
7c) is composed of a main bar end supporting member (33) detachably provided on the main body (48) so as to support the main body (48).

A fourth aspect of the present invention is the reinforcing bar building apparatus (5) according to the third aspect, wherein each of the gauge grooves (9s) is formed so as to accommodate a plurality of main bars (37a). There is.

A fourth invention of the present invention is the reinforcing bar building-in device (5) of the third invention, wherein the main body (4)
8) a gauge board (9c, 9cP, 9cQ) is detachably provided, and the gauge groove (9s) is provided in the gauge board (9c,
9cP, 9cQ).

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

[0010]

According to the first aspect of the present invention having the above-described structure, when the reinforcing bar assembly (37) is installed on the hole bottom (3b), the reinforcing bar assembly is supported by the main reinforcing bar end supporting means (31). The holding of the main bar (37a) of the three-dimensional body (37) is released.

In the second aspect of the present invention, when the main reinforcement holding frame (49) is collected on the ground, the main reinforcement holding frame (49) is disassembled into a plurality of parts (49a) and pulled up. .

In the third aspect of the present invention, the plurality of main bars (37a) mounted on the main bar holding means (9) are housed in the gauge grooves (9s). Further, the hole bottom (3) of the reinforcing bar assembly (37) mounted on the main reinforcing bar holding means (9).
For installation in b), the main bar end support member (33) is removed from the body (48).

Further, in the fourth aspect of the present invention, the reinforcing bar erection device (5) can be applied not only to the single-row reinforcing bar (37a) but also to bundle and assemble a plurality of main reinforcing bars (37a).

In the fifth aspect of the present invention, various gauge boards (9c, 9cP, 9cQ) are selectively attached to the main body (48) for use.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway perspective view showing a state of a pile construction site where a reinforcing bar erection work is being carried out using an example of a reinforcing bar erection device according to the present invention, and FIG. 3 is a perspective view showing the vicinity of a beam unit of the reinforcing bar building device shown in FIG.
Is a side view showing the frame of the reinforcing bar building device shown in FIG. 1, FIG. 4 is a view taken in the direction of arrow I in FIG. 3, and FIG. 5 is an enlarged view taken in the direction of arrow IV of the upper gauge disc shown in FIG. 6 is a cross-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 view showing the relationship between the wire drum and the pulley, and FIG. X2-Y2 line sectional view of 3,
10 is a view 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. 13 (a) to 13 (c) are views showing the procedure of installation work of the force distribution muscles, and FIG. 14 shows a state in which the pulley is stored in the frame shown in FIG. Figure shown, FIG.
FIG. 16 is a diagram showing a lower gauge disc configured in another form, FIG. 16 is a diagram showing a lower gauge disc configured in another form, and FIG. 17 is an upper gauge disc configured in another form. FIG. 18, FIG. 18 is a view showing an upper gauge disk configured differently, FIG. 19 is a view showing a gauge plate configured differently, and FIG. 20 is a different shape. FIG. 21 is a view showing the configured gauge board, and FIG. 21 is a cross-sectional view showing a state where the lower frame having the gauge board shown in FIG. 20 is placed on the bottom of the hole.

As shown in FIG. 1, a vertical hole 3 for later becoming a pile 30 is provided on the ground 2a at the site 1 where piles are being constructed.
A mortar 36 for temporary support is formed on the side wall 3c of the vertical hole 3 in a shape of a cylinder having a predetermined diameter D1 in the form of a pit 3
It is sprayed in an annular shape by connecting a and the bottom 3b of the hole (shown in FIGS. 10 and 11). Further, in the site 1, the reinforcing bar building device 5 is a reinforcing bar cage 37 which is a reinforcing bar assembly for the piles 30, that is, concrete reinforcing bars.
Is provided to be built in the vertical hole 3, and the reinforcing bar cage 37 is formed so that its entire external shape is a cylindrical shape. The rebar cage 37 has a plurality of main bars 37a arranged along the side wall 3c of the vertical hole 3 in the form of extending in the vertical direction, that is, in the vertical direction, and each of the main bars 37a extends laterally so as to intersect with the plurality of main bars 37a. , These multiple main lines 37
It is composed of a plurality of force distribution bars 37b welded to a, and now the rebar cage 37 is connected to the vertical hole 3 while connecting the main bar 37a and the force distribution bar 37b through the rebar building device 5. It is being built inside. In addition, the distribution muscles 37b are formed such that the carrying-in shape to the site 1 is, for example, a semicircular shape (not shown), and two semicircular distribution muscles 37b are paired one by one. Then, one force distribution line 37b is formed by lap welding in a circular shape.

As shown in FIG. 1 to FIG. 3, the reinforcing bar building device 5 has a frame 6, and the frame 6 includes a frame body 6a and four installations provided around the frame body 6a. It has legs 60. That is, each installation leg 60 has a pillar 61, and the pillar 61 is erected and supported on the ground 2a via each leg portion 61a which is the lower end thereof. Further, the frame main body 6a has a lower mount 50 assembled from a steel material or the like, and the lower mount 50 and each of the columns 61 are integrally connected via the beam main body 62a. That is, the lower mount 50 is supported by the four columns 61 via the four beam bodies 62a.
Further, as shown in FIG. 2, a reinforcing plate member 63 having an inverted U-shaped vertical cross section is inserted into each beam main body 62a, and the beam main body 62a is inserted into a portion of the reinforcing plate member 63 recessed in the inverted U-shape. The beam main body 62a and the reinforcing plate member 63 are fastened by a detachable mounting member 63a (illustrated in FIG. 3) such as a bolt or a nut. That is, the beam main body 62 a 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 installation leg 60 are connected to each other via the beam unit 62. In addition, each beam main body 62a
Further, the beam unit 62 in which the reinforcing plate member 63 is attached to the beam main body 62a is a plate-shaped member in which the longitudinal direction of its cross section is oriented in the vertical direction. That is, the beam main body 62a
Alternatively, the beam unit 62 has a predetermined strength and its horizontal thickness is as small as possible.

A lower gauge disk 7 formed in a hollow disk shape is horizontally joined to the lower end of the lower mount 50, and the lower gauge disk 7 has a lower gauge disk 7 as shown in FIGS. 6 and 7. In addition, a plurality of main bar arrangement portions 71 are formed along the outer circumference of the lower gauge disk 7 at a predetermined pitch P1. The plurality of main bar arrangement portions 71 formed on the lower gauge disc 7 are formed in a shape corresponding to the bar arrangement pitch of the main bar 37a to be built. In the embodiment, the formation pitch of the main bar arrangement section 71 is about 5 cm. By being formed in, the bar arrangement pitch of the main bar 37a is 10,
The pitch can be selected from an integer multiple of 5, such as 15 or 20 cm. Each main bar arrangement portion 7 of the lower gauge disk 7
As shown in FIGS. 6 and 7, in FIG. 1, one main bar 37a having a diameter corresponding to the main bar diameter of the pile 30 can be accommodated, and the main bar disposition portion 71 has a main bar 37a.
6 can be movably held, that is, can be guided in the up-down direction which is a direction intersecting with the paper surface of FIGS. 6 and 7. Further, the lower gauge disk 7 is provided with a stopper 72 formed of a leaf spring or the like as a main bar fixing member as a main bar arranging portion 7.
1 is provided in each main bar arrangement 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 simplicity. As shown by the alternate long and short dash line in FIG. 7, each stopper 72 can freely bend only toward the inner side, that is, toward the main bar disposition portion 71 side. The main bar 37 is provided in each of the plurality of main bar arrangement portions 71.
A can be inserted horizontally (that is, it can be inserted in the direction of arrow A in FIG. 7).

Further, as shown in FIGS. 1, 3 and 6, four supporting columns 51 are erected on the lower mount 50, and these supporting columns 51 have the above-mentioned lower gauge disk. A hollow disk-shaped upper cage disk 52, which is configured substantially in the same manner as 7, is horizontally supported. That is, in the upper gauge disc 52, as shown in FIGS.
The plurality of main bar arrangement portions 71X are the lower gauge discs 7
It is formed at every predetermined pitch P1 similar to the case.
The upper gauge disc 52 and the lower gauge disc 7
Between and, the positions of the main bar arrangement portions 71, 71X are aligned in a one-to-one correspondence in the vertical direction. Further, as shown in FIG. 5, the main bars 37a of the upper gauge disc 52 are accommodated in the respective main bar arrangement portions 71X so that the main bars 37a can be moved in the vertical direction. The stopper 72X made of a spring or the like is used for each main bar placement portion 71.
It is provided for each X. The stopper 72X is provided in such a manner 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 simply shown in FIGS. 1, 3, 4 and the like.
Has been omitted. ). And each stopper 72X is
As shown by the alternate long and short dash line in FIG.
The stopper 72X can freely bend only toward the 1X side, whereby the stopper 72X can freely insert the main bar 37a into each of the plurality of main bar arrangement portions 71X in the horizontal direction (that is, arrow A in FIG. 5). 'So that it can be inserted in the direction). The upper gauge disc 52 and the lower gauge disc 7 described above constitute a main reinforcing bar arrangement means 70. That is, a plurality of main reinforcement arrangement portions 71, 71X are provided in the main reinforcement arrangement means 70 provided in the frame body 6a (hence, the frame 6). Further, as shown in FIG. 3, a predetermined space M1 is formed between the upper gauge disc 52 and the lower gauge disc 7.

A predetermined winch unit 5 is mounted on the lower mount 50 as shown in FIGS. 1, 3 and 6.
3 are provided. The winch unit 53 receives a well-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 power around a horizontal rotation axis KJ in the directions of arrows K and J in the figure. It is composed of a wire drum 56 which can be rotationally driven. That is, as shown in FIGS. 6 and 8, the wire drum 56 can be driven to rotate about the rotation axis KJ in the directions of arrows K and J in the figure, and therefore the circle extended along the rotation axis KJ. The wire drum 56 is formed in a columnar shape, and a brim-shaped partition plate 56a is provided in the wire drum 56 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 arrow E and F are the arrow E and F directions, wire winding portions 56b and 56b are formed on the arrow E side and the arrow F side, that is, both left and right sides of the paper surface of FIG. Each wire winding part 5
In 6b, the starting end side and the terminating end side of one wire 11 are fed out by the rotational drive 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 wrapped with. In addition, between the wire winding portions 56b and 56b, the winding position KD of the wire 11 wound around each wire winding portion 56b is shown centering around the partition plate 56a regardless of the winding amount of these wires 11 and the like. Are arranged at positions symmetrical with respect to the arrow E and F directions.

By the way, the lower mount 50 is provided with wire supporting means 44 as shown in FIGS. The wire supporting means 44 has a pulley supporting frame 8 erected on the lower mount 50.
A predetermined upper pulley 45 is fixedly provided in the.
The upper pulley 45 is arranged above the wire drum 56. The wire 11 from the wire winding portions 56b and 56b of the wire drum 56 is connected to the upper pulley 45. Further, the lower mount 50 has a wire insertion hole 57 formed in the vicinity of the center thereof so as to vertically penetrate the lower mount 50. The wire insertion hole 57 is formed at the center of the lower gauge disk 7. It is arranged above the hole 7a. Of the wire 11
A portion between the wire drum 56 and the upper pulley 45 hangs down the lower mount 50 and the lower gauge disk 7 so as to penetrate 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, which is a moving pulley, is hung on the portion. That is, the wire 1 is made by the wire drum 56.
The pulley 10 is driven upward in the vertical hole 3 by winding 1 and the pulley 10 is lowered in the vertical hole 3 by feeding out the wire 11 by the wire drum 56. Therefore, the winch unit 53, the wire support means 44, the wire 11, and the pulley 10 described above constitute an elevating device 54 that can vertically drive the lower frame frame 9 to be described later. In the present embodiment, each wire 11 from the wire drum 56 to the upper pulley 45 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 hung between the upper pulley 45 and the wire 11 in a six-fold manner.
It is possible to suspend a load as large as possible by multiplying 1 by 6. On the other hand, as shown in FIG. 3, a storage space 65 is formed vertically below the wire supporting means 44 of the lower mount 50, and thus at the position of the wire insertion hole 57 of the lower mount 50. , The pulley 10
Moves upward and, as shown in FIG. 14, the storage space 6
5 can be stored. In other words, the movement of the pulley 10 depends on the storage space 65 and the lower gauge disk 7.
It is supposed to be held between the lower part of the room and the lower part of.

As shown in FIGS. 1 and 3, the pulley 10 is provided with a lower frame 9 vertically. As shown in FIG. 3, the lower frame frame 9 has a suspension frame body 46 suspended from the pulley 10, and the suspension frame body 46 has a plurality of suspension wires 47 interposed therebetween. The main body 49 is suspended. As shown in FIGS. 3, 9 and 10, the 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. 49 has a main body member 48 formed in an annular shape. The body member 48 can be disassembled and assembled into a plurality of body parts 48a (six body parts 48a in this embodiment) in the circumferential direction. At the lower end of the main body member 48, as shown in FIG. 11, a plurality of mounting legs 9a capable of mounting the frame main body 49 on the hole bottom 3b of the vertical hole 3 (for example, three or more, but in FIG. 1
Only one of them is shown, and the mounting legs 9a are omitted in FIGS. 3 and 10 for the sake of simplicity). Also, at the lower end of the main body member 48, these mounting legs 9a
A horizontal lower end surface 9b is formed in a portion other than the above, and the main body member 48 has one for each main body part 48a.
Reinforcing bar support jigs 32 one by one (hence six in this embodiment)
Are installed vertically. That is, each reinforcing bar support jig 32
Has a jig body 33 in the form of a horizontal rod, and a predetermined reinforcing bar support interval TS is formed in the vertical direction between the upper surface 33a of the jig body 33 and the lower end surface 9b of the body member 48. There is. Further, the jig body 33 is detachably attached to the body member 48 via fastening members 35, 35 such as bolts at substantially both end portions thereof. When the main body member 48 is placed on the hole bottom 3b of the vertical hole 3, a predetermined vertical direction is provided between the jig body 33 and the hole bottom 3b depending on the vertical height of the placing leg 9a. The work interval SK is formed. As shown in FIG.
As shown in FIG. 11, a ring-shaped gauge plate 9c is detachably provided by bolts or the like on the outer peripheral side of the main body member 48 so as to form a flange portion 9d that horizontally protrudes like a collar. , The flange portion 9d of the gauge panel 9c is arranged along the outer periphery thereof at a predetermined pitch P1 at a predetermined pitch P1 in the main bar arrangement portion 9s.
The main bars 37a are formed so that they are substantially the same as the above-mentioned main bars arranging portions 71 and 71X. The positions of the main reinforcement placement portion 9s, the positions of the main reinforcement placement portion 71, and the positions of the main reinforcement placement portion 71X are matched and aligned in the vertical direction. Also,
The gauge board 9c can be disassembled and assembled into a plurality of gauge parts 9e (six gauge parts 9e in this embodiment) in the circumferential direction in correspondence with the main body member 48. Therefore, the frame frame main body 49 including the gauge board 9c and the main body member 48
Is a plurality of parts 49a (six parts 4 in this embodiment).
9a, and each part 49a is one gauge part 9e
It consists of one body part 48a) and can be disassembled and assembled. A plurality of main reinforcements 37a arranged along the side walls 3c of the vertical holes 3 are mounted on the frame body 49 so as to penetrate the main reinforcement placement portions 9s formed on the gauge board 9c. The lower end portion 37c is L
It is bent in a letter shape. That is, the horizontal portion of the lower end portion 37c includes the upper surface 33a of the jig main body 33 and the main body member 4.
It is placed and supported on the upper surface 33a of the jig body 33 so as to pass through the reinforcing bar support interval TS between the lower end surface 9 and the lower end surface 9b of the jig 8 toward the inside. As described above, in the lower frame frame 9, each main reinforcement arrangement portion 9s of the gauge board 9c capable of accommodating each main reinforcement 37a and the jig main body 33 capable of mounting and supporting the lower end portion 37c of the main reinforcement 37a are the main reinforcements. Holds the lower end portion 37c of 37a
It is the main bar end holding portion 31 that can be released.

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 so as to protrude downward inward in the radial direction of the lower frame frame 9. The hook holder 12 has a hook arrangement groove 12b formed between the portion connected to the frame body 49 and the hook engagement protrusion 12a. The hook holder 12 has a hook arrangement groove 12b.
The suspension ring 13 connected to the lower end of the suspension wire 47 in a form hooked on the hook engagement protrusion 12a from the lower side of b.
Are held in engagement. In addition, the hanging wire 47 and the hanging ring 1
11, a level adjusting jack 15 is provided so as to adjust the length of the suspending wire 47 in the directions of arrows B and C in FIG. 11, as shown in FIG. Through the jack 15, the frame frame main body 49 is in an equilibrium state, that is, the main bars 3 mounted and supported on the frame frame main body 49.
7a, and therefore the equilibrium state of the rebar cage 37 can be adjusted and held.

Further, the frame 6 of the reinforcing bar building device 5
As shown in FIG. 13 (a), is provided with four hydraulic jacks (not shown) vertically mounted on the bottom side of the lower pedestal 50. Each hydraulic jack has a power distribution. The distribution force receiving jig 17 that is a muscle holding means is used for the chain 2
It hangs through 0 respectively. Each of the force distribution receiving jigs 17 is configured to be movable in the vertical direction by a predetermined length via the hydraulic jacks, and the force distribution receiving jigs 17 are provided directly below the hydraulic jacks. A position at which the force distribution receiving jig 17 is to be arranged when the force distribution muscle 37b is laid out from the position where it is hung, to the radial outward direction indicated by the arrow G in FIG. 13 (a). It has a shape that can be moved up to. A plurality of hooks 191 which are a plurality of force distribution muscle holding portions are arranged in the force distribution muscle receiving jig 17 so as to form a predetermined interval in the vertical direction at a pitch corresponding to the bar arrangement pitch of the force distribution muscles 37b. A plurality of hooks 191 provided in the vertical direction of each force distribution jig 17 are connected to each other via a guide 19 and are arranged in a radial direction inside and outside by operating the guide 19. It is configured such that it can be projected and retracted by a predetermined stroke in the directions of arrows H and G. Then, the force distribution receiving jig 17 is provided for each of the plurality of hanging devices 191.
The force distribution muscles 37b for each book can be mounted and held.

By the way, as shown in FIG. 1, a crane truck 40 is arranged at the site 1 so as to be located in the vicinity of the vertical hole 3, and a hook block 41 of the crane truck 40 has a reinforcing bar hanging jig. The main bar suspension 21 is attached and hung. As shown in FIG. 1 and FIG. 12, the main bar suspension 21 has three sheath tubes 22 in the embodiment, and inside each sheath tube 22, a main bar insertion space 22 s which is a reinforcing bar insertion space. However, the main bar 37a is formed so that the main bar 37a can be inserted along the axial direction of the main bar 37a (that is, vertically). The three sheath pipes 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 bar 37a.
The three sheath tubes 22 of No. 1 are hung from the hook block 41 via the pulling wire 25 attached to the connecting member 23 and the bundling jig 26. Therefore, these are the connecting members 2
3, the pulling wire 25, and the bundling jig 26 are three sheath tubes 22.
Is configured to configure the hanging engagement means provided in,
The main bar suspension 21 is suspended and supported by the hook block 41 by the suspension engagement means.

Further, as shown in FIG. 12, a clamp 27, which is a reinforcing bar clamp capable of gripping the main bar 37a, is provided on the main bar suspender 21 under the three sheath pipes 22 and 1 respectively. The connecting member 23, the pulling wire 25, and the bundling jig 26 are provided in three pieces so as to form a pair, and each clamp 27 has a connecting wire 29 having a length L1. It is connected and connected to each of the sheath tubes 22 in a form of being suspended from the connecting member 23 via the.
That is, the main bar suspension 21 has the sheath pipes 22 and the clamps 27 in a state in which it is suspended by the suspension engagement means on the hook block 41 of the crane vehicle 40.
However, due to the weight of the clamp 27, a predetermined distance L1 can be maintained in the vertical direction. At this time, the three sheath pipes 22 are arranged so as to be interposed in the traction force of the crane. The sheath tubes 22 and the three clamps 27 are arranged so as to be aligned in the vertical direction, so that the main bar suspension 21 has a shape in which the main bar 37a is oriented with its material axis direction in the vertical direction, as shown in FIG. Can be held at.

Since the site 1 has the above-mentioned structure, when the pile 30 is constructed in the site 1, the vertical hole 3 is formed.
Is formed by digging from a predetermined position on the ground 2a by a predetermined depth so as to form a predetermined diameter D1, and the mortar 36 is sprayed on the side wall 3c to a predetermined thickness. A work of building a reinforcing bar cage 37 having a plurality of main bars 37a and a plurality of force distribution bars 37b into the vertical hole 3 as a reinforcing bar assembly is performed. Therefore, first, four installation legs 60
1 is installed on the ground 2a so as to surround the wellhead 3a of the vertical hole 3 in which the rebar cage 5 is to be built, and the frame body 6a is aligned with the vertical hole 3 and accordingly the lower frame 9 Installs a reinforcing bar erection device 5 in such a manner that it can descend in the vertical hole 3. At this time, the reinforcing bar building device 5 is installed so that the center CL1 of the frame 6 matches the center CT1 of the vertical hole 3.

Therefore, firstly, a predetermined number of main bars 37 are arranged.
The work of vertically holding a on the lower frame frame 9 in a form corresponding to the respective bar arrangement positions is performed. Therefore, first, the main muscle insertion space 22 of each of the three sheath tubes 22 of the main muscle suspender 21 is inserted.
s, the main bar 37 in a state of being laid down as shown in the right back part of FIG.
A is inserted, and the clamp 27 is attached to a predetermined position of the main bar 37a (that is, a position which becomes a lower part when the main bar 37a is set vertically). In this way, 3 clamps 2
7, the three main bars 37a are gripped, the bundling jig 26 is engaged with the hook block 41 of the crane vehicle 40, and then the hook block 41 is moved upward by the crane operation. Then, the main bar suspension 21
The clamps 27 holding the main bars 37a are connected to the connecting members 23 provided on the three sheath tubes 23 and the pulling wire 2
7, the crane 4 as a bundling jig 26 as a suspension engagement means
It hangs at 0 and becomes vertical. In this way, the main line 37
When a is laid down vertically and raised vertically, the three main bars 37
a is raised in a form in which horizontal movement is restrained by the three sheath tubes 22 and is a vertical main bar 37a.
Is held in such a manner that its axial direction is oriented vertically by the restraining force of the three sheath tubes 22 in the horizontal direction and the own weight of the three main bars 37a, and the main bars are suspended via the three clamps 27. It becomes the form hung on the tool 21. As a result, the three main bars 37a, as shown in FIG.
The main rod suspending device 21 is stably provided without bending the shaft of 7a.
It is hung and held by the hook block 41 via.

In this state, the hook block 41 is further appropriately moved through the operation of the crane so that the three main bars 37
a is set between the upper gauge disc 52, the lower gauge disc 7, and the lower frame frame 9, respectively. For this purpose, 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 frame 9, and then the upper end of the main bar 37a is attached to the upper gauge disc 52 and the lower part. The main bar arranging part 71 and the main bar arranging part 71X at predetermined positions of the gauge disk 7 are inserted and arranged. At this time, the stoppers 72, 7 are attached to the respective main bar arrangement portions 71, 71X.
Since 2X is provided, the stoppers 72, 72X are pushed by the main reinforcement 37a in the arrow A direction of FIG. 7 and the arrow A ′ direction of FIG.
Enter the 71X from the horizontal direction. Then, the stoppers 72, 72X are arranged so that the main bars 37a are inserted in such a manner that the stoppers 72, 72X are restored to the plates 73, 73X side by the spring force held by the stoppers 72, 72X as shown by the solid lines in FIGS. 7 and 5. Immediately close the main muscle placement portions 71, 71X. That is, the main bar 37a is prevented from coming off from the main bar arrangement portions 71, 71X in the radial direction. As a result, the main bar 37a is held in the main bar placement parts 71, 71X so as to be vertically movable with respect to the main bar placement parts 71, 71X, and thus vertically guided.

In this way, three main bars 32a are sequentially held and mounted on the main bar end holding section 31 of the lower frame 9, and are arranged in the main bar disposing sections 71 and 71X of the upper gauge disc 52 and the lower gauge disk 7, respectively. When the main bar suspension 21 is lowered by a crane operation, the three main bars 37a in which the suspension supporting state by the main bar suspension 21 is released
Is held vertically by the lower frame frame 9 due to its own weight. Therefore, 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 operating the crane. Then, in the main muscle suspending device 21 with the clamp 27 removed from the main muscle 37a, the three sheath tubes 22 move upward relative to the main muscle 37a via the respective main muscle insertion spaces 22s. It comes off from the main bar 37a so as to come out to the upper side. Therefore, if the main bar suspension 21 is used, the main bar 37a can be easily made to be vertical only by attaching the clamp 27 to the laid main bar 37a and operating the crane. The main bar suspension 21 can be easily attached to the main bar 37a simply by removing the clamp 27 from the vertical main bar 37a.
It is possible to remove from the work, and these works do not involve work at heights and complexity of work.

By repeating the above-described operation of setting the main reinforcement 37a between the upper gauge disc 52, the lower gauge disc 7 and the lower frame frame 9, a predetermined number of main reinforcements 37a are placed at their respective reinforcement positions. In a corresponding manner, when vertically mounted on the lower frame frame 9, as shown in FIG. 11, the level adjusting jack 15 is driven and operated to adjust the length of each hanging 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 equilibrated so that each of them has a shape in which the material axis direction is oriented in the vertical direction. Therefore, next, work for connecting the force distribution muscles 37b to the predetermined number of main muscles 37a is performed.

At the time of connecting the main muscle 37a of the distribution muscle 37b, the distribution muscle receiving jig 17 is used.
The force distribution muscle 37b located at the bottom of the
When connecting to a, the lower end of the force distribution receiving jig 17 is set to the lower end of the main bar 37a. Then, when connecting the force distribution muscles 37b located above this to the main muscles 37a, as shown in FIG. 13 (a), the force distribution muscles 37b already connected to the main muscles 37a are located above the respective force distribution muscles 37b. The jig 17 is positioned and set. The positioning of the force distribution muscle receiving jig 17 is performed by setting the hanging tool 191 at the lowermost end to be engaged with and held by the force distribution muscles 37b already connected to the main muscles 37a. This is performed by driving and operating four hydraulic jacks (not shown) that suspend the receiving jig 17.

Each of the four force distribution bracing jigs 17 thus positioned is arranged inside a plurality of ring-shaped main braces 37a held by the lower frame 9. . Then, as shown in FIG. 13B, the force distribution receiving jig 17 is slightly moved outward in the radial direction, and a plurality of hooks 1 are provided via the guide 19.
The plurality of hooks 191 are arranged so as to project outside the main bar 37a by forming 91 in the direction of arrow G in FIG. At this time, the plurality of hooks 191 of the force distribution receiving jig 17
The hook 191 located at the bottom of the
When it is hooked on the force distribution muscle 37b which is already connected to a and is located at the uppermost portion, the force distribution muscle receiving jig 17 moves to the main muscle 37a.
It is properly retained on the inner side of. At this time, since the hooks 191 are provided on the force distribution muscle receiving jig 17 in a shape corresponding to the bar arrangement pitch of the force distribution muscles 37b, the positions where the force distribution muscles 37b should be arranged are plural. The position of the tool 191 is immediately detected.

Therefore, when the distribution force receiving jig 17 is set so that the hanging member 191 thereof projects to the outside of the main reinforcement 37a, the distribution muscle 37b having a semicircular shape is formed.
Then, as shown in FIG. 13 (b), they are engaged and held in a form of being hooked on each hanging tool 191 of the force distribution receiving jig 17. Then, each of the force distribution muscles 37b is wrapped around each end portion of the two semicircular force distribution muscles 37b, 37b so that each of the distribution muscles 37b has a circular shape. 37
Weld and connect them so that they intersect with a.
Then, by repeating the work of connecting the force distribution bars 37b to the plurality of main bars 37a, the rebar cage 3 which is the rebar assembly.
7 can be formed, and the rebar assembly work for this is
It can be performed outside the mine on the ground 2a near the mine mouth 3a.

In this way, the force distribution muscles 37 engaged with the hooks 191 of all the steps of the force distribution muscle receiving jig 17 set previously.
When b is welded to the main bar 37a and the work for connecting the force distribution muscles for one cycle is completed, the force distribution receiving jig 17 is then connected to the main bar 37a (that is, during assembly) as shown in FIG. 13 (c). Separate it from the reinforced basket 37). For this, each force receiving jig 1
Release the hydraulic jack (not shown) that suspends 7,
Each of the force distribution receiving jigs 17 is moved slightly downward. Then, the distribution force receiving jig 17 immediately causes the main bar 3 to move.
As shown in FIG. 13 (c), it is restored and arranged inside the main bar 37a so as to return to the direction of the arrow H in the figure, which is the inner side of the radial direction from 7a.

In this way, the distribution muscles 37b are provided as the main reinforcements 37 by the amount of the hooks 191 on all the steps of the distribution muscle receiving jig 17.
When the work for connecting to a is performed, it means that the rebar cage assembling work has proceeded by the amount corresponding to the length of the force distribution receiving jig 17. Therefore, while performing the work of assembling the reinforcing bar cage 37 using the force distribution receiving jig 17 in this manner, the lifting device 54 is driven and the wire 11 is paid out from the wire drum 56 in a predetermined cycle. 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.
The predetermined number of main bars 37a set between the upper gauge disk 52 and the lower gauge disk 7 and the distribution bars 37b connected to the main bars 37a are already assembled to the rebar cage 37, as described above. As a part, it is lowered into the vertical hole 3. Therefore, when the worker drives and operates the lifting device 54 on the ground 2a near the pit entrance 3a, the main bar 3
It is possible to perform the work of building in the vertical hole 3 in a state where the reinforcing bar 37 is formed by the 7a and the distribution muscle 37b. When the assembled portion of the reinforcing bar cage 37 is lowered into the vertical hole 3 in this way, the main reinforcing bars 37a forming the reinforcing bar cage 37 are the main reinforcing bar arrangement portions of the upper gauge disk 52 and the lower gauge disk 7. 71X, 71, so that it moves downward relative to each other.
Since the stoppers 72X and 72 are provided at 71, the respective main bars 37a can be connected to the main bar placement portions 71X and 7X.
It is possible to smoothly move downward with respect to the upper gauge disc 52 and the lower gauge disc 7 without coming off from the outer side in the radial direction. Also, the main bar 37a descends,
Even if the upper end of the main bar 37a is disengaged downward from the main bar arrangement portion 71X of the upper gauge disc 52, the main bar 37a is located below the upper gauge disc 52.
The main bar 37a is guided by the main bar arrangement portion 71 of
It is convenient because the guide can be used over as wide a range as possible.

After that, when the upper end of the main bar 37a already mounted via the lower frame frame 9 side is located between the upper gauge disc 52 and the lower gauge disc 7, the main bar suspension 21 is further inserted. 3 new main muscles 37a
One by one, this time set only on the upper gauge disc 52. The main bar 37a set only on the upper gauge disc 52 is aligned until the lower end of the main bar 37a is aligned with the upper end of the already mounted main bar 37a.
While being guided by the main bar arrangement portion 71X of the upper gauge disc 52, the main gauge disc 52 is lowered through the main bar suspension 21 as it is. Then, the main bars 37a, 37 to which these alignments are made correspond
a is sequentially joined via a coupler or the like (not shown).
When the new main bar 37a is successively 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 disc 7 and the upper main bar 37a is connected to the upper gauge disc. 52 to guide the upper and lower main bars 37a, 37a.
Position each other. Further, the joining work between the upper and lower main bars 37a, 37a is performed via the space M1 between the lower gauge disc 7 and the upper gauge disc 52. In this way, after joining a predetermined number of new main bars 37a, the lower frame frame 9 is lowered by the drive operation of the elevating device 54, while connecting the force distribution bars 37b to these newly joined main bars 37a to rebar cage. The work of assembling by further extending 37 is performed. In this way, the main bar arrangement portion 71 of the upper gauge disk 52 is formed such that a predetermined number of new bar bars 37a are associated with the respective bar bar positions.
Set to X, the set main bars 37a are joined to the already mounted main bars 37a, the predetermined number of new main bars 37a are connected to the force distribution bars 37b, and the reinforcing bar cage 37 is extended and assembled. Meanwhile, the lower frame frame 9 is lowered by the length of the assembled rebar cage 37 by driving the lifting device 54, that is, the assembled rebar cage 37 is sequentially fed into the vertical hole 3 in a predetermined cycle. As a result, the main bar 37a and the force distribution bar 37b are provided in the vertical hole 3.
Can be built in the state of the rebar cage 37 to which these are connected. Then, the rebar cage assembling and the building work can be performed on the ground 2a near the wellhead 3a, and a worker can go down into the well of the vertical hole 3 for assembling the rebar, or a scaffold can be temporarily installed on the vertical hole 3 to raise the height. There is no need to perform work in place.

Further, when the reinforcing bar cage 37 of a predetermined length is assembled and installed in the vertical hole 37 in this manner, the lower frame frame 9 in which the vertical hole 3 is lowered for the reinforcing bar to be installed. Reaches the hole bottom 3b as shown in FIG. As a result, the reinforcing bar cage 37 is supported by the hole bottom 3b via the mounting legs 9a of the lower frame 9.
After that, an operator at the bottom 3b of the hole removes the fastening member 35 of the reinforcing bar supporting jig 32 of the lower frame 9, and the working space SK between the jig body 33 and the bottom 3b of the jig is used. 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 frame 9 loses what supports it, the main bar 37a falls and the horizontal portion of the lower end part 37c is opened at the bottom of the hole. 3b (it should be noted that the jig body 33 has a main bar 37a).
In some cases, it cannot be collected in the form of being laid on the lower end portion 37c. ). Next, when the lower frame frame 9 is disassembled into parts 49a and the elevating device 54 is driven to raise the disassembled lower frame frame 9, the main bar end portion 3 of the main bar 37a is held.
Since the holding by 1 has already been released, the lower frame 9 is raised and recovered with these main bars 37a left behind. That is, most of the members constituting the lower frame 9 are recovered, and therefore, they can be diverted to other sites, which is convenient. Further, since the lower frame frame 9 is disassembled and pulled up in a compact shape, it is possible to prevent the lower frame frame 9 from interfering with the rebar cage 37 during the recovery.

Next, by removing the reinforcing bar building device 5 from the vertical hole 3, it is possible to immediately perform the work of placing concrete in the vertical hole 3. 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 been built yet, and a new reinforcing bar building work can be started. Therefore, the construction efficiency is good and the pile construction can be performed. In addition, such relocation of the reinforcing bar building device 5,
A crane truck 40 is used to set the main bar 37a to the reinforcing bar building device 5 described above, but the reinforcing bar building device 5 is installed or relocated without holding the reinforcing bar cage 37, and Since the main bars 37a are set in groups of three, a small crane vehicle 40 is sufficient. The rebar cage 37 is assembled near the wellhead 3a, and before the assembly, the main bar 37a and the semicircular force distribution bar 3 are assembled.
7b can be stacked and stored in a lying state. Therefore, installation of such a crane truck 40 and the main line 37
a, a wide area is not occupied for the storage of the reinforcing bars such as the power distribution muscles 37b.

In the above-described embodiment, the cylindrical rebar cage 37 along the side wall 3c of the cylindrical vertical hole 3 is formed.
However, the shapes of the vertical hole 3 and the reinforcing bar cage 37 are not limited to this. Therefore, a reinforcing bar assembly such as the reinforcing bar cage 37 may be built in the center of the vertical hole 3. Further, a reinforcing bar assembly having a plate shape as a whole may be built in the wall-shaped vertical hole.

Further, the reinforcing bar building device according to the present invention is
It can also be applied when bundling main bars. However, in that case, the lower gauge disc 7 and the upper gauge disc 5
2. The gauge board 9c is configured differently from the above-described embodiment. For example, in the case where two main bars 37a are lined up in the circumferential direction of the rebar cage 37 and built, the lower gauge discs 7P include a plurality of substantially the same as the lower gauge discs 7 as shown in FIG. The main bar arrangement portions 71 are formed along the outer circumference of the lower gauge disk 7P at predetermined pitches. However, a partition plate 74 for partitioning the main reinforcement placement portion 71 into two portions 71a, 71a arranged in the circumferential direction is provided in each main reinforcement placement portion 71, and the main reinforcement 37a is provided in these portions 71a, 71a. , 37a can be accommodated one by one. That is, the main bars 37 accommodated in the parts 71a, 71a of the single main bar placement portion 71.
a and 37a are in a bundled state. It should be noted that the lower gauge disk 7P is provided with two appropriate stoppers 72 for each main bar placement part 71, that is, one main bar placement part 7 is provided.
One part is provided for each part 71a. Further, as in the lower gauge disc 7P, the upper cage disc 52P has a plurality of main bar arrangement portions 71X formed at predetermined pitches along the outer periphery of the upper cage disc 52P, as shown in FIG. . However, each main bar placement section 7
The 1X is provided with a partition plate 74X for partitioning the main bar arrangement portion 71X into two parts 71Xa, 71Xa arranged side by side in the circumferential direction. These parts 71Xa, 71X are provided.
Each of the main bars 37a, 37a is freely accommodated in a. That is, the main bars 37a, 37a housed in the parts 71Xa, 71Xa of the single main bar arranging section 71X
Are in a bundled state. It should be noted that the upper gauge disc 52P is provided with two appropriate stoppers 72X for each main bar placement part 71X, that is, one main bar placement part 71X.
One is provided for each part 71Xa. Further, as shown in FIG. 19, the gauge board 9cP has main bar arrangement portions 9s formed along the outer periphery thereof at a predetermined pitch. No partition plate or the like is provided in the main reinforcement placement portion 9s, but one main reinforcement placement portion 9s holds two main reinforcements 37a. Then, the lower gauge disk 7P, the upper cage disk 52P, and the gauge board 9c described above.
Between P, the position of the main bar placement unit 71 and the main bar placement unit 71
The position of X and the position of the main bar arrangement portion 9s are matched and aligned in the vertical direction. By using the lower gauge disc 7P, the upper cage disc 52P, and the gauge disc 9cP described above, the main bars 37a are arranged in the circumferential direction of the rebar cage 37 to form 2
It will be easier to work by bundling books one by one.
In addition, the main bar arrangement portion 71 of the lower gauge disk 7P, the main bar arrangement portion 71X of the upper cage disk 52P, the gauge board 9
By holding only one main bar 37a at each main bar arrangement portion 9s of the cP, the work of building the main bar 37a without bundling can be easily performed.

In addition, for example, in the case where two main bars 37a are lined up in the radial direction of the reinforcing bar cage 37 and are assembled in a bundle,
As shown in FIG. 16, the lower gauge disc 7Q includes a plurality of main bar arrangement portions 71 that are substantially the same as the lower gauge disc 7.
Are formed at a predetermined pitch along the outer circumference of the lower gauge disc 7Q. However, in each main bar placement section 71,
The main bars 37a, 37a are housed in a line in the radial direction. That is, the main bars 37a, 37a housed in the one main bar arrangement portion 71 are in a bundled state. It should be noted that the lower gauge disc 7Q is provided with an appropriate stopper 72 for each main bar arrangement portion 71. Further, as in the lower gauge disc 7Q, the upper cage disc 52Q has a plurality of main bar arrangement portions 71X formed along the outer periphery of the upper cage disc 52Q at a predetermined pitch, as shown in FIG. . However, each main bar placement section 7
The main bars 37a, 37a can be accommodated in the 1X in a line in the radial direction. That is, one main bar placement unit 71
The main bars 37a and 37a housed in X are in a bundled state. The upper gauge disc 52Q is provided with an appropriate stopper 72X for each main bar arrangement portion 71X. As shown in FIG. 20, the gauge board 9cQ has a main bar arrangement portion 9s arranged at a predetermined pitch along the outer circumference thereof.
Are formed. Two main bars 37a are held in one main bar arrangement portion 9s. Then, the lower gauge disc 7Q and the upper cage disc 52 described above.
Between Q and the gauge board 9cQ, the positions of the main bar arrangement part 71, the positions of the main bar arrangement part 71X, and the positions of the main bar arrangement part 9s are vertically aligned and matched. Gauge board 9cQ
As shown in FIG. 21, the holding state of the bundled main bars 37a, 37a in the main bar end holding portion 31 in the case of adopting is, for example, the lower end portions 37c, 3c of the main bars 37a, 37a.
The bent horizontal portions of 7c are arranged so as to be vertically overlapped with each other. By employing the lower gauge disc 7Q, the upper cage disc 52Q, and the gauge disc 9cQ described above, it is possible to easily carry out the work of bundling the two main reinforcements 37a in a line in the radial direction of the reinforcing cage 37. In addition, the main bar arrangement portion 71 of the lower gauge disk 7Q, the main bar arrangement portion 71X of the upper cage disk 52Q, and the gauge board 9c.
By holding only one main bar 37a in each Q main bar arrangement portion 9s, the work of building the main bars 37a without bundling can be easily performed.

Further, in the above-mentioned embodiment, the main reinforcement end holding portion 31 composed of the main reinforcement placement portion 9s and the jig main body 33 is shown as the main reinforcement end holding means capable of holding and releasing the end of the main reinforcement. , The main muscle end holding means is not limited to this,
Other things may be used. For example, as the main bar end holding means, a reinforcing bar gripping device (such as a clamp) formed so as to hold and fix the end of the main bar may be adopted.

[0044]

As described above, according to the first aspect of the present invention, a plurality of main reinforcements 37a and other main reinforcements and power distribution reinforcements 3 are provided in vertical holes such as vertical holes 3 dug down from the ground such as the ground 2a.
Reinforcing bar cage 37 for concrete reinforcement by force distribution bars such as 7b
In a reinforcing bar building device used when building a reinforcing bar assembly such as, a frame 6 or the like is provided, and the frame is provided with a main reinforcing bar arrangement means such as a main reinforcing bar arrangement means 70. A plurality of main bar arrangement portions 71, 71X and other main bar guide portions are provided so as to guide the main bars in the vertical direction, and the lower frame frame 9 is provided below the frame.
And the like, and main bars holding means such as a main bar holding section having a main bar holding frame such as a frame main body 49. An end portion such as the lower end portion 37c of the main bar of the reinforcing bar assembly to be built is provided so as to be able to hold and release the means, and an elevating device such as an elevating device 54 is moved to the frame to move and move the main bar holding frame up and down. Since it is configured to be freely provided, the reinforcing bar is assembled by the work of connecting the distribution bars to the plurality of main bars held in the predetermined bar arrangement state by the main bar holding means, and the main bar holding means is moved downward. By moving it, it is possible to perform the work of building the assembled rebar assembly. By the way, the assembled rebar assembly descends in the vertical hole and is installed at the hole bottom of the vertical hole together with the main bar holding means for supporting the rebar assembly in the vertical hole. However, the main bar of the rebar assembly is held at the main bar end supporting means of the main bar holding frame of the main bar holding means because its end is held, so when the rebar assembly is installed at the bottom of the hole, The main bar end supporting means releases the holding of the main bar of the reinforcing bar assembly, thus separating the reinforcing bar assembly and the main bar holding frame side and leaving the reinforcing bar assembly at the bottom of the hole to fix the main bar holding frame. Make sure to collect it on the ground. In other words, since the main bar holding frame side of the main bar holding means can be recovered, the members such as the main bar holding frame can be diverted as much as possible, and the members can be saved as much as possible. Economical costs are also reduced by saving parts.

A second invention of the present invention is the reinforcing bar building apparatus of the first invention, wherein the main bar holding frame is formed in an annular shape, and the main bar holding frame is arranged in the circumferential direction such as the parts 49a. Since it can be disassembled and assembled into a plurality of parts, when the main reinforcement holding frame is to be collected on the ground, the main reinforcement holding frame is disassembled into a plurality of parts and thus pulled up in a compact form as much as possible. By doing so, in addition to the effect of the first invention, when the main reinforcement holding frame is collected on the ground, the main reinforcement holding frame can be smoothly collected without interfering with the built-in reinforcing bar assembly or the like. It's convenient to do.

A third aspect of the present invention is the reinforcing bar building apparatus according to the first aspect, wherein the main reinforcement holding frame has a main body such as a main body member 48 formed in an annular shape, and the main reinforcement end support is provided. The means is capable of accommodating the main bar, and a plurality of gauge grooves such as a main bar arrangement portion 9s provided in the main body in a shape corresponding to the main bar guide portion of the main bar arrangement means, and a main bar of a reinforcing bar assembly to be built. Since it is composed of a main bar end supporting member such as a jig main body 33 that is detachably provided on the main body so as to support an end part of the lower end portion 37c of the main bar, the plurality of main bars mounted on the main bar holding means are By storing them in the gauge grooves, the postures of these main muscles can be properly maintained. Therefore, in addition to the effect of the first invention, the plurality of main bars mounted on the main bar holding means, or the rebar assembly assembled with these main bar reinforcing bars may be twisted or rotated carelessly during mounting. This is convenient because it is prevented as much as possible. Also, when installing the reinforcing bar assembly mounted on the main bar holding means to the bottom of the hole, the main bar end supporting member is removed from the main body, the reinforcing bar assembly is left on the bottom of the hole, and the main body etc. is grounded. Try to collect it. That is, it is convenient because at least the main body of the main bar holding frame can be recovered. Further, when the main body is collected, the main-muscle end supporting member may be removed from the main body, which is easy.

The fourth aspect of the present invention is the reinforcing bar building apparatus of the third aspect, wherein each of the gauge grooves is formed so that a plurality of main bars can be housed therein. In addition to the single-row reinforcing bar, the reinforcing bar building apparatus according to the fourth aspect of the present invention can be applied not only to the single-row reinforcing bar but also to bundle a plurality of main bars, which is convenient.

A fifth aspect of the present invention is the reinforcing bar building apparatus according to the third aspect of the present invention, wherein the main body is provided with a gauge board 9
Gauge boards such as c, 9cP, and 9cQ are detachably provided, and the gauge grooves are provided in the gauge board. Therefore, a plurality of types of gauge boards with different formation pitches of gauge grooves, or a plurality of types of gauge boards with different gauge groove sizes are prepared, and according to the mode of the reinforcing bar assembly to be built at the construction site, Select an appropriate one from these multiple types of gauge boards and attach it to the main body. Thus, in addition to the effect of the third aspect of the invention, the reinforcing bar erection device according to the fifth aspect of the invention can be applied to the erection of the reinforcing bar assembly of various aspects, which is advantageous.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a state of a pile construction site where a reinforcing bar erection work is being performed using an example 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 building device shown in FIG.

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

FIG. 4 is a view on arrow I of FIG.

5 is an enlarged view of a portion of the upper gauge disc shown in FIG. 4, which is viewed in the direction of arrow IV.

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

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

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

9 is a sectional view taken along line X2-Y2 of FIG.

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.

FIG. 12 is a perspective view showing a main muscle suspender.

13 (a) to 13 (c) are diagrams showing the procedure of the work of installing the force distribution muscles.

FIG. 14 is a diagram showing a state in which a pulley is housed in the frame shown in FIG.

FIG. 15 is a view of a lower gauge disc configured in another form.

FIG. 16 is a view of a lower gauge disc configured in another form.

FIG. 17 is a diagram showing an alternative configuration of the upper gauge disc.

FIG. 18 is a diagram showing an alternative top gauge disc.

FIG. 19 is a view showing a gauge board configured in another form.

FIG. 20 is a view showing a gauge board configured in another form.

21 is a cross-sectional view showing a state where a lower frame having the gauge board shown in FIG. 20 is placed on the hole bottom.

[Explanation of symbols]

 2a ... Ground 3 ... Vertical hole 5 ... Reinforcing bar building device 6 ... Frame 9 ... Main reinforcement holding means (lower frame frame) 9c ... Gauge board 9cP ... Gauge board 9cQ ... Gauge board 9s ... Gauge groove (Main bar arranging section) 31 ...... Main bar end supporting means (Main bar end holding section) 33 ...... Main bar end supporting member (Jig body) 37 …… Reinforcing bar assembly (Rebar cage) 37a …… Main bar 37b …… Distribution muscle 37c ...... Lower end part 48 ...... Main body (main body member) 49 ...... Main reinforcement holding frame (frame frame main body) 49a ...... Parts 54 ...... Lifting device 70 ...... Main reinforcement arrangement means 71 ...... Main reinforcement guide part ( Main bar arrangement part) 71X ... Main bar guide part (main bar arrangement part)

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeki Komiyama 1-6-14 Akasaka, Minato-ku, Tokyo Inside the UHV transmission and transformation substation, Tokyo Electric Power Co., Inc. (72) Sakae Nakai 518-1 Komagaki, Nagareyama-shi, Chiba Prefecture Mitsui Construction Co., Ltd. Technical Research Institute (72) Inventor Masataka Uozumi No. 518 Komagaki, Nagareyama City, Chiba Prefecture Mitsui Construction Co., Ltd. (72) Inventor Yuji Nagano No. 518 Komagaki, Nagareyama City, Chiba Mitsui Construction Co., Ltd. Inside the technical laboratory

Claims (5)

[Claims] 1. A reinforcing bar erection device for use in erection of a reinforcing bar assembly for concrete reinforcement by a plurality of main bars and distribution bars in a vertical hole dug down from the ground, comprising a frame, and the frame has main bars. Providing bar arrangement means, a plurality of main bar guide portions in the main bar bar arrangement means, so as to be able to guide the main bar in the vertical direction, respectively, the main bar holding means below the frame, provided vertically movable. The main bar holding means has a main bar holding frame, and main bar end supporting means is provided on the main bar holding frame so that the end of the main bar of the reinforcing bar assembly to be built can be held and released, and the frame is provided with a lifting device. Is a reinforcing bar erection device in which the main reinforcement holding frame is provided so as to be vertically movable and positionable. 2. The reinforcing bar construction according to claim 1, wherein the main bar holding frame is formed in an annular shape, and the main bar holding frame can be disassembled and assembled into a plurality of parts in a circumferential direction. Including device. 3. The main reinforcement holding frame has a main body formed in an annular shape, and the main reinforcement end supporting means is capable of accommodating the main reinforcement and is in a form corresponding to the main reinforcement guide portion of the main reinforcement arrangement means. A main bar end supporting member detachably provided on the main body so as to support a plurality of gauge grooves provided on the main body and an end portion of a main bar of a reinforcing bar assembly to be built therein. Item 1. The reinforcing bar building device according to item 1. 4. The reinforcing bar building device according to claim 3, wherein each of the gauge grooves is formed so as to accommodate a plurality of main bars. 5. The reinforcing bar building apparatus according to claim 3, wherein a gauge board is detachably provided on the main body, and the gauge groove is provided on the gauge board.