JP2017145683A - Reinforcement and formwork construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method of reinforcement and formwork, which can improve work efficiency in constructing the reinforcement and a formwork panel.SOLUTION: A construction method of reinforcement and formwork comprises: a reinforcement holding process to hold a reinforcement R using a handling device 1; a reinforcement arrangement process to arrange the reinforcement R at a predetermined position by operating the handling device 1; a formwork holding process to hold a rod body 62a of a formwork connector 61 fitted to a formwork panel 58 using the handling device 1; and a formwork arrangement process to arrange the formwork panel 58 near the reinforcement R by operating the handling device 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for constructing a reinforcing bar and a formwork.

  In the construction of concrete structures, after the assembled rebars embedded in the concrete structure are assembled in advance at the factory, etc., they are transported to the construction site, and the assembled rebars are assembled in place using a crane or the like. . And a formwork is installed in the vicinity of the assembled rebar, and concrete is placed inside the formwork. There are Patent Documents 1 to 3 as techniques used in the construction of such a concrete structure.

  Patent Document 1 describes a reinforcing bar panel mounting machine including a mounting attachment that supports a reinforcing bar panel. Reinforcement panels with rebars meshed are assembled in advance at factories and the like. The reinforcing bar panel is attached to the mounting attachment using a fastening member such as a U-bolt, and is moved by the apparatus main body and the arm portion of the reinforcing bar panel mounting machine, and is arranged at a predetermined position.

  Patent Document 2 describes various attachments used in the retaining wall construction method when performing civil engineering work. Attachments include rebar attachments that hold assembled rebars in which rebars are joined in a grid pattern, and formwork attachments that hold insertion nails inserted into nail receiving parts attached to concrete formwork.

  Patent Document 3 describes a gripping device used for construction of a formwork for an underground outer wall using a formwork panel. After the connecting hook of the formwork panel is hooked on the hook of the gripping device, a lock pin is inserted so as to be passed over the opening of the hook, whereby the formwork panel is held by the gripping device.

JP-A-6-10513 JP-A-10-29917 JP-A-8-260705

  By the way, in recent years, a thicker reinforcing bar may be used in order to reinforce the additional load per reinforcing bar with the increase in size of a concrete structure. However, as described in Patent Document 1, when a thick reinforcing bar is used for a reinforcing bar panel that is assembled in advance in a factory or the like, the weight of the reinforcing bar panel increases, and the moving and arranging work of the reinforcing bar panel becomes difficult. In addition, as described in Patent Documents 1 to 3, according to the construction using the attachment for arranging the assembled reinforcing bars and the like and the attachment for arranging the formwork, an attachment replacement work occurs. Therefore, it has been difficult to improve work efficiency in the construction of reinforcing bars and formwork.

  Then, an object of this invention is to provide the construction method of a reinforcing bar and a formwork which can improve the working efficiency in construction of a reinforcing bar and a formwork panel.

  One aspect of the present invention is a reinforcing bar and formwork construction method for constructing a concrete structure using a handling device attached to a construction machine, the reinforcing bar gripping step for gripping a plurality of reinforcing bars using the handling device, and Operating the handling device to place the reinforcing bars in a predetermined position, using the handling device, and using the handling device to grasp the formwork coupling tool attached to the formwork, and the handling device And a formwork placement step of placing the formwork in the vicinity of the reinforcing bar, the handling device grips the reinforcing bars arranged at a predetermined interval along the arrangement direction, and the formwork connector is The rods have substantially the same diameter as the reinforcing bars and are arranged in parallel at a predetermined interval along the arrangement direction.

  According to this reinforcing bar and formwork construction method, a plurality of reinforcing bars are gripped. And after arrange | positioning a reinforcing bar in a predetermined position, the rod body of a formwork coupling tool is grasped and a formwork is arranged near the reinforcing bar. According to these steps, since the rod body of the formwork coupler is substantially the same diameter as the reinforcing bar, and the arrangement interval of the reinforcing bar corresponds to the arrangement interval of the rod body, the formwork coupling tool is gripped by the handling device. Is possible. For this reason, the formwork can be arranged in the vicinity of the reinforcing bar by operating the handling device. Therefore, since the reinforcing bar arranging step and the formwork arranging step can be performed without exchanging the handling device attached to the construction machine, the work efficiency in the construction of the reinforcing bars and the formwork can be improved.

  Moreover, a formwork coupling tool is detachable with respect to a formwork, and a formwork arrangement | positioning process includes the process of removing a formwork connection tool from a formwork, after arrange | positioning a formwork in the vicinity of a reinforcing bar. According to this process, since the formwork connector is removed from the formwork after the formwork is placed in the vicinity of the reinforcing bar, the formwork joint can be reused for placement of another formwork.

  Moreover, it has the reinforcing bar alignment process which arranges a some reinforcing bar using the reinforcing bar alignment apparatus for arranging a reinforcing bar at predetermined intervals before the reinforcing bar grasping process. According to this process, by moving the handling device so that each gripping part corresponds to the position of the arranged reinforcing bar, a plurality of reinforcing bars can be arranged without arranging the reinforcing bars one by one for each gripping part. The handling device can be gripped. Therefore, the work efficiency in the arrangement of the reinforcing bars can be further increased.

  ADVANTAGE OF THE INVENTION According to this invention, the construction method of the reinforcing bar and formwork using the handling apparatus which can improve the working efficiency in construction of a reinforcing bar and a formwork panel is provided.

It is a figure which shows the construction machine to which the handling apparatus which concerns on this invention is applied. It is a front view which shows the state which hold | gripped the reinforcing bar with the handling apparatus of FIG. It is a front view which shows the state which canceled the holding | grip of the reinforcing bar with the handling apparatus. It is a perspective view which expands and shows the holding part of a handling device. It is a top view which shows a handling apparatus. It is a side view which shows a handling apparatus. It is a perspective view for demonstrating the reinforcing bar arrangement process in the construction method concerning the present invention. It is sectional drawing for demonstrating the reinforcing bar arrangement | positioning process in the construction method which concerns on this invention. It is sectional drawing for demonstrating the formwork arrangement | positioning process in the construction method which concerns on this invention. It is sectional drawing for demonstrating one process in the construction method which concerns on this invention. It is a perspective sectional view showing a formwork unit which attached a formwork connector. It is a perspective view which shows a formwork coupling tool. It is a perspective view which expands and shows the principal part of a formwork coupling tool.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a handling device according to the invention and a method for constructing a reinforcing bar and a formwork using the handling device will be described in detail with reference to the drawings.

  As shown in FIG. 1, the handling device 1 is a so-called attachment that is attached to a construction machine 2 and is used for gripping a reinforcing bar, and is used for the arrangement of reinforcing bars and a formwork in the construction of a concrete structure. The construction machine 2 uses a crawler type backhoe. The crawler-type backhoe includes a main body 4 that is pivotably disposed on the crawler 3. The main body 4 includes a boom 6 that is swingably provided, and an arm 7 to which the handling device 1 is attached.

  The handling device 1 is connected to the construction machine 2 with a gripping unit 8 for gripping a reinforcing bar, a base plate 9 on which the gripping unit 8 is arranged, a base plate driving unit 11 for rotating the gripping unit 8 and the base plate 9, and the construction machine 2. Connecting portion 12.

  As shown in FIG. 2, the handling device 1 holds three reinforcing bars R1 to R3 that are parallel to each other. The reinforcing bars R1 to R3 are rod-shaped steel materials having irregular projections on the surface, such as deformed steel bars and deformed coil reinforcing bars. The intervals between the reinforcing bars R1 to R3 in the gripping state correspond to the arrangement intervals of the reinforcing bars R1 to R3 in the concrete structure.

  The gripping unit 8 of the handling device 1 includes a gripping means GA for gripping the reinforcing bar R1 arranged in the first row, a gripping means GB for gripping the reinforcing bar R2 arranged in the second row, and a third row. And gripping means GC for gripping the arranged reinforcing bars R3. The gripping means GA to GC are arranged along the arrangement direction A of the reinforcing bars R1 to R3, can be opened and closed in the arrangement direction A, and grip and hold the reinforcing bars R1 to R3 in the radial direction. The gripping means GA has a first gripping part G1 and a second gripping part G2 that are a pair of gripping parts, and the gripping means GB is a first gripping part G3 and a second gripping part G4 that are a pair of gripping parts. The gripping means GC has a first gripping part G5 and a second gripping part G6 which are a pair of gripping parts.

  The first gripping portions G1, G3, G5 and the second gripping portions G2, G4, G6 are spaced from each other in the longitudinal direction L of the reinforcing bars R1 to R3 and are arranged side by side on the base plate 9. The distance D1 between the first gripping portions G1, G3, G5 and the second gripping portions G2, G4, G6 in the longitudinal direction L is the first gripping portion G1, G3, G5 or the second gripping in the longitudinal direction L. It is equal to or longer than the length D2 of the parts G2, G4, G6. Further, the distance D1 between the first gripping portions G1, G3, G5 and the second gripping portions G2, G4, G6 is substantially the same between the gripping portions G1 to G3.

  In the gripping means GA to GC, the first grip portions G1, G3, G5 in adjacent rows are not adjacent to each other, and the second grip portions G2, G4, G6 in adjacent rows are not adjacent to each other. As described above, the pair of gripping portions are arranged in a staggered manner in the arrangement direction A. For example, the first grip portion G3 in the second row is not positioned between the first grip portion G1 in the first row and the first grip portion G5 in the third row. The first gripping portion G3 is located between the first gripping portion G1 in the first row and the second gripping portion G6 in the third row, and the second gripping portion G2 in the first row and the third row It is located between the first grip G5.

  As shown in FIGS. 4 and 5, the first gripping portion G1 has a fixed gripping piece 13 and a movable gripping piece 14 capable of gripping the reinforcing bar R1, and the movable gripping piece 14 is formed on the surface 9 a of the base plate 9. The fixed holding piece 13 can be moved in the arrangement direction A with respect to the fixed holding piece 13.

  The base 16 of the fixed grip piece 13 fixed to the base plate 9 has a hydraulic cylinder 17 as a drive source for driving the movable grip piece 14 and 2 for guiding the movable grip piece 14 along the arrangement direction A. Guide shafts 18 and 19 (see FIG. 3) are attached. Hydraulic oil is supplied to the hydraulic cylinder 17 via a hydraulic circuit having a hydraulic pipe 21 branched from a hydraulic source of the construction machine 2, and the hydraulic pressure is controlled by a hydraulic control unit (not shown). The expansion / contraction length of the piston 22 is controlled.

  Further, on the upper surface of the base portion 16, a reinforcing bar arrangement portion 16a that comes into contact with the surface of the reinforcing bar R1 is provided. In the reinforcing bar arranging portion 16a, a gripping portion 23 is provided so as to protrude upward and grip the reinforcing bar R1 in the radial direction. The grip portion 23 is formed integrally with the base portion 16 and is divided into two along the longitudinal direction L.

  The movable gripping piece 14 is not fixed to the base plate 9, and the guide shafts 18 and 19 are inserted through the through holes provided in the base 24 of the movable gripping piece 14 and supported so as to be movable in the arrangement direction A. . Further, the piston 22 of the hydraulic cylinder 17 is fixed to the base 24 (see FIG. 5). On the upper surface of the base 24 of the movable gripping piece 14, a gripping portion 26 is provided so as to protrude upward and grip the rebar R <b> 1 in the radial direction.

  Here, a fixed side spacer 27 is attached to the grip portion 23 of the fixed grip piece 13, a movable side spacer 28 is attached to the grip portion 26 of the movable grip piece 14, and the rebar R 1 is connected to the fixed side spacer 27. It is clamped in the radial direction by the movable spacer 28. A concave portion is formed on the holding surface 28a of the movable side spacer 28 facing the fixed side spacer 27 in order to prevent the reinforcing bar R3 from falling off.

  By using the fixed side spacer 27 and the movable side spacer 28, it is possible to cope with various diameters of the reinforcing bar R1 gripped by the first gripping portion G1. Further, by changing the thickness of the fixed side spacer 27 and the movable side spacer 28 in the arrangement direction A, the gripping position of the reinforcing bars R1 in the arrangement direction A is changed, for example, the first row of the reinforcing bars R1 and the second row The interval between the reinforcing bars R2 can be adjusted.

  Next, operation | movement of the 1st holding part G1 is demonstrated. For example, when the reinforcing bar R1 is arranged in the first gripping part G1, or when the gripped reinforcing bar R1 is released, the hydraulic pressure applied to the hydraulic cylinder 17 is controlled to cause the piston 22 of the hydraulic cylinder 17 to protrude. Then, the movable gripping piece 14 attached to the piston 22 moves so as to be separated from the fixed gripping piece 13 along the arrangement direction A (see FIG. 3).

  Further, when holding the reinforcing bar R1 disposed in the first gripping portion G1, the hydraulic pressure applied to the hydraulic cylinder 17 is controlled to shorten the protruding length of the piston 22. Then, the movable gripping piece 14 attached to the piston 22 moves so as to approach the fixed gripping piece 13 along the arrangement direction A (see FIG. 2).

  The first grip portion G1 in the first row has been described in detail above, but the other first grip portions G3, G5 and the second grip portions G2, G4, G6 are the same as the first grip portion G1. Detailed description will be omitted.

  In the hydraulic circuit that supplies the hydraulic oil to the hydraulic cylinder 17, for example, the hydraulic pressure applied to the first gripping part G1 and the second gripping part G2 is controlled simultaneously, so that the first gripping part G1 and the second gripping part are controlled. The opening / closing operation of the part G2 can be performed simultaneously. On the other hand, since the hydraulic circuit is independent of the first row of gripping means GA, the second row of gripping means GB, and the third row of gripping means GC, the gripping means GA to GC are independent of each other. Can be opened and closed.

  As shown in FIGS. 5 and 6, a plate 29 is disposed on the back surface 9 b side of the base plate 9 so as to be separated from the back surface 9 b, and a plurality of support columns 31 are disposed between the base plate 9 and the plate 29. Yes. The space between the base plate 9 and the plate 29 is used as an area for piping a hydraulic pipe 21 that supplies hydraulic oil to the hydraulic cylinder 17.

  On the back surface 29 a side of the plate 29, a base plate driving unit 11 that rotates the base plate 9 about a rotation axis C <b> 1 orthogonal to the base plate 9 is disposed.

  In the base plate driving unit 11, a wheel 33 having a through hole 32 extending in the direction of the rotation axis C <b> 1 is bolted to the approximate center of the back surface 29 a of the plate 29, and a fixed shaft fixed to the plate 34 in the through hole 32. 36 is inserted. According to this configuration, the plate 29 can be rotated with respect to the plate 34 around the rotation axis C1. The base plate drive unit 11 further includes a drive mechanism 30 for rotating the wheel 33 with respect to the fixed shaft 36.

  As shown in FIG. 6, the drive mechanism 30 is attached to the plate 34 and transmits rotation between the hydraulic motor 38 as a drive source, the two sprockets 39 and 42, and the sprockets 39 and 42. , A worm W1 for transmitting the rotation of the sprocket 42 to the wheel 33, and a worm wheel W2. A rib 37 is bolted to the plate 34, and a hydraulic motor 38 to which hydraulic oil is supplied from the construction machine 2 as a drive source is provided on the rib 37. A sprocket 39 is attached to the rotation shaft 38 a of the hydraulic motor 38, and the rotation of the sprocket 39 is transmitted to the sprocket 42 having a larger diameter than the sprocket 39 through the chain 41. According to such a configuration, the torque generated by the hydraulic motor 38 can be increased.

  Since the end of the rotating shaft 43 is fixed to the sprocket 42 and the worm W1 is provided on the rotating shaft 43, the rotation of the sprocket 42 is transmitted to the worm W1. A worm wheel W2 is meshed with the worm W1, and the worm wheel W2 is rotatable about a rotation axis C1, and is bolted to the wheel 33 so that the center axis coincides with the rotation axis C1. Yes. Since the rotation of the worm W1 is transmitted to the worm wheel W2, the wheel 33 rotates about the rotation axis C1 with respect to the fixed shaft 36, and thus is fixed to the wheel 33 via the plate 29 and the support column 31. The base plate 9 is rotated about the rotation axis C1.

  A connecting portion 12 for connecting to the construction machine 2 (see FIG. 1) is welded to the back surface 34a of the plate 34 to which the base plate driving portion 11 is attached. Since the connecting portion 12 is swingably connected to the arm 7 via the shaft 44 and is swingably connected to the piston 47 via the shaft 46, the handling device 1 rotates as the rotation center C2. To do.

  Then, the construction method of a reinforcing bar and a formwork for constructing a concrete structure using construction machine 2 to which handling device 1 is applied is explained.

<Rebar alignment process>
As shown in FIG. 7, rails 48 are laid on the construction site. The reinforcing bar aligning device 49 is movably arranged on the rail 48, stocks the reinforcing bars R, and arranges the three reinforcing bars R1 to R3 by aligning them at a predetermined interval.

  The reinforcing bar alignment device 49 includes a reinforcing bar storage unit 51 that stocks a plurality of reinforcing bars R, a reinforcing bar alignment unit 52 for arranging the reinforcing bars R, and a wheel 53. The reinforcing bar alignment part 52 is arranged in parallel to the reinforcing bar storage part 51 and is arranged below the reinforcing bar storage part 51. In the reinforcing bar alignment portion 52, three grooves 52a to 52c extending in the longitudinal direction of the reinforcing bar R are formed. The interval between the grooves 52a to 52c is equal to the interval when the reinforcing bars R are arranged at predetermined positions in the concrete structure.

  The reinforcing bar R3 stocked in the reinforcing bar storage part 51 is rolled toward the reinforcing bar alignment part 52 and fits into the groove 52a on the reinforcing bar storage part 51 side. Next, when another reinforcing bar R2 is rolled toward the reinforcing bar alignment portion 52, the reinforcing bar R2 passes over the reinforcing bar R3 fitted in the groove 52a and fits in the groove 52b. When another reinforcing bar R1 is rolled toward the reinforcing bar alignment portion 52, the reinforcing bar R1 passes over the reinforcing bar R3 fitted into the groove 52a and the reinforcing bar R2 fitted into the groove 52b, and fits into the groove 52c. With the above operation, the three reinforcing bars R1 to R3 are arranged at a predetermined interval.

<Rebar gripping process>
The reinforcing bars R <b> 1 to R <b> 3 arranged at predetermined intervals are gripped using the handling device 1. More specifically, the hydraulic control unit is operated to widen the interval between the fixed gripping piece 13 and the movable gripping piece 14 of the handling device 1 so as to be larger than the diameter of the reinforcing bars R1 to R3 (see FIG. 3). Thereafter, the construction machine 2 is operated to move the handling device 1 so that the three reinforcing bars R1 to R3 arranged in the reinforcing bar aligning section 52 fit between the fixed holding piece 13 and the movable holding piece 14, respectively. . Thereafter, the hydraulic control unit is operated to grip the reinforcing bars R1 to R3 by reducing the interval between the fixed gripping piece 13 and the movable gripping piece 14 of the handling device 1. Through the above operation, the reinforcing bars R1 to R3 are gripped by the handling device 1.

<Rebar arrangement process>
As shown in FIG. 8, a reinforcing bar RF is embedded in a floor portion 54 made of concrete, and a cylindrical connector 56 is attached to an end portion of the reinforcing bar RF that is exposed from the floor portion 54. While rotating the main body 4 of the construction machine 2, the boom 6 and the arm 7 are operated to insert the three rebars R <b> 1 to R <b> 3 gripped by the handling device 1 into the connection tool 56. After that, after confirming that the three reinforcing bars R1 to R3 have been inserted to the respective connection tools 56 to a predetermined insertion depth, the handling device 1 is operated to fix the fixed gripping piece 13 and the movable gripping piece of the handling device 1. 14 is widened so as to be larger than the diameter of the reinforcing bars R1 to R3, and the gripping state of the reinforcing bars R1 to R3 is released. With the above operation, the three reinforcing bars R1 to R3 gripped by the handling device 1 are arranged at predetermined positions.

  The reinforcing bar arrangement process, the reinforcing bar gripping process, and the reinforcing bar arrangement process described above are repeatedly performed to arrange a predetermined number of reinforcing bars R.

  After the arrangement of the predetermined number of reinforcing bars R is completed, a mold holding process and a mold arranging process for arranging the mold unit in the vicinity of the reinforcing bar R are performed. First, the formwork coupling tool that holds the formwork unit using the handling device 1 will be described.

  As shown in FIG. 11, the mold unit 57 is configured by connecting a plurality of mold panels 58 in the vertical direction. In the formwork panel 58, the front surface 58a side is directed to a region where the concrete is placed when placed at a predetermined position, and the back surface 58b side has two beams extending vertically to reinforce the concrete pressure. 59 are arranged in parallel in the horizontal direction. A formwork coupler 61 is detachably attached to the beam 59 of the formwork unit 57.

  As shown in FIG. 12, the formwork coupler 61 has a gripped portion 62 for gripping with gripping means GA to GC (see FIG. 2) of the handling device 1. In the gripped portion 62, three rod bodies 62a having substantially the same diameter as the reinforcing bars R are juxtaposed along the arrangement direction A at the same interval as the arrangement interval of the reinforcing bars R1 to R3. A horizontal frame 64 provided with a hooking portion 63 is fixed to both ends of the rod body 62a so as to be orthogonal to the rod body 62a.

  As shown in FIG. 13, the hook 63 is L-shaped and is welded to one end of the horizontal frame 64. The hooking portion 63 has a hooking frame 66 that is disposed in the horizontal direction away from the flange 64 a of the horizontal frame 64, and the hooking frame 66 is inserted into the hole 59 a (see FIG. 11) of the beam 59. The hook frame 66 is fixed to an L-shaped protruding frame 67 whose one end side is welded to the flange 64a of the horizontal frame 64, and the other end side of the hook frame 66 is prevented from falling off. A drop-off prevention piece 68 fixed so as to protrude upward from the upper surface 66a is provided.

<Formwork gripping process>
The hydraulic control unit is operated to widen the distance between the fixed gripping piece 13 and the movable gripping piece 14 of the handling device 1 so as to be larger than the diameter of the rod body 62a. Thereafter, the construction machine 2 is operated to move the handling device 1 so that the rods 62a are fitted between the fixed gripping piece 13 and the movable gripping piece 14, respectively. Thereafter, the hydraulic control unit is operated to grip the rod 63a by reducing the interval between the fixed gripping piece 13 and the movable gripping piece 14 of the handling device 1.

<Formwork placement process>
As shown in FIG. 9, the formwork unit 57 is arranged in the vicinity of the reinforcing bar R by operating the boom 6 and the arm 7 while rotating the main body 4 of the construction machine 2 while operating the handling device 1. . The formwork unit 57 held by the handling device 1 is fixed to the formwork unit 69 previously arranged using a bolt or the like.

  The above-described mold gripping process and the mold layout process are repeatedly performed to arrange a predetermined number of mold units 57.

  As shown in FIG. 10, after the arrangement of the predetermined number of mold units 57 is completed, the mold units 57 facing each other are formed in a form tie (registered trademark) so that the mold units 57 do not move in the out-of-plane direction. ) 71. Then, an operation of placing concrete in a space surrounded by the formwork unit 57 is performed. By carrying out the above steps, a concrete structure in which the reinforcing bars R are arranged is constructed.

  According to the handling apparatus 1, a plurality of rows of gripping means GA to GC are arranged along the reinforcing bar arrangement direction A and can be opened and closed in the arrangement direction A. Accordingly, since a plurality of rod-like reinforcing bars R1 to R3 can be gripped along the arrangement direction A, the plurality of reinforcing bars R1 to R3 can be simultaneously arranged at predetermined positions. Since these bar-shaped reinforcing bars R1 to R3 are lighter and easier to move than a structure in which the reinforcing bars R are combined, work efficiency in the construction of the reinforcing bars R and the formwork panel 58 can be improved.

  The first gripping portions G1, G3, G5 and the second gripping portions G2, G4, G6 are arranged side by side along the longitudinal direction L of the rebar R and a pair of fixed grips capable of gripping the rebar R It has a piece 13 and a movable gripping piece 14. According to this configuration, since the reinforcing bar R is gripped by the first gripping parts G1, G3, G5 and the second gripping parts G2, G4, G6 arranged in parallel along the longitudinal direction L of the reinforcing bar R, the reinforcing bar The gripping state of R can be stabilized.

  In the arrangement direction A, the pair of gripping portions G1, G2, the pair of gripping portions G3, G4, and the pair of gripping portions G5, G6 are arranged in a staggered manner. According to this configuration, since the pair of gripping portions G1, G2, the pair of gripping portions G3, G4, and the pair of gripping portions G5, G6 are arranged in a staggered manner in the arrangement direction A, the gripping portion G1 Holding the distance D1 between the first gripping parts G1, G3, and G5 and the second gripping parts G2, G4, and G6 in each row while securing the distance D1 in the longitudinal direction L of .about.G6. The parts G1 to G6 can be arranged.

  Further, according to such an arrangement of the gripping portions G1 to G6, the first grip in the second row is arranged between the first gripping portion G1 in the first row and the second gripping portion G2 in the longitudinal direction L. The part G3 is arranged, and the first gripping part G1 in the first row is not adjacent to the arrangement direction A in the first gripping part G3 in the second row. Therefore, for example, when the first gripping part G1 in the first row is opened, the movable gripping piece 14 of the first gripping part G1 contacts the first gripping part G3 and the second gripping part G4 in the second row. Therefore, the width of the handling device 1 in the arrangement direction A can be reduced.

  In addition, the handling device 1 includes a base plate driving unit 11 that rotates the base plate 9. According to this configuration, since the base plate 9 can be rotated about the rotation axis C1, the degree of freedom for adjusting the postures of the gripping portions G1 to G6 on the surface 9a of the base plate 9 is increased. Therefore, the arrangement accuracy of the reinforcing bars R1 to R3 can be increased.

  Furthermore, according to the reinforcing bar and formwork construction method using the handling device 1 and the formwork connector 61, the reinforcing bar placement step and the formwork placement step are performed without replacing the handling device 1 attached to the construction machine 2. Therefore, the working efficiency in the construction of the reinforcing bar R and the formwork unit 57 can be improved.

  Further, this construction method includes a reinforcing bar alignment step of arranging a plurality of reinforcing bars R1 to R3 using the reinforcing bar alignment device 49 before the reinforcing bar gripping step. According to this step, the gripping devices 1 are moved so that the gripping portions G1 to G6 correspond to the positions of the reinforcing bars R1 to R3 arranged at predetermined intervals in the reinforcing bar aligning unit 52 of the reinforcing bar aligning device 49, whereby each gripping is performed. The handling device 1 can hold the three reinforcing bars R1 to R3 without arranging the reinforcing bars R1 to R3 one by one with respect to the parts G1 to G6. Therefore, the work efficiency in the arrangement of the reinforcing bars R1 to R3 can be further increased.

  The present invention is not limited to the embodiment described above.

  The handling device 1 may have two reinforcing bars R to be gripped, or three or more. Further, the gripping means may have two or more gripping portions juxtaposed in the longitudinal direction L.

  In the mold layout step, the mold unit 57 is disposed in the vicinity of the reinforcing bar R and is fixed to the previously disposed mold frame unit 69, and then the mold frame connector 61 is removed from the mold unit 57. It may be. When removing the formwork coupling tool 61 from the formwork unit 57, the moldwork coupling tool 61 is moved downward to such an extent that the drop-off prevention piece 68 does not interfere with the hole 59a of the beam 59, and then hooked from the hole 59a. The handling device 1 is moved in the horizontal direction so as to remove the frame 66. According to this process, the formwork coupler 61 can be reused for the arrangement of another formwork unit 57.

  Further, in the mold form arranging step, the form panel 58 and the beam 59 may be arranged separately. That is, after the formwork panel 58 is directly attached to the formwork connector 61 and disposed at a predetermined position, the formwork connector 61 is removed from the formwork panel 58. In this case, the formwork panel 58 is attached to the hooking frame 66 of the formwork connector 61 using a foam tie or the like. Installation and removal operations such as foam ties are performed by the operator. Thereafter, the beam 59 is attached to the formwork connector 61 and disposed on the back surface 58 b of the formwork panel 58, and the beam 59 is fixed to the formwork panel 58.

DESCRIPTION OF SYMBOLS 1 ... Handling apparatus, 2 ... Construction machine, 3 ... Crawler, 8 ... Holding unit, 9 ... Base plate, 9a ... Front surface, 9b ... Back surface, 11 ... Base plate drive part, 12 ... Connection part, 13 ... Fixed holding piece, 14 ... Movable gripping piece, 17 ... hydraulic cylinder, 33 ... wheel, 36 ... fixed shaft, 38 ... hydraulic motor, 39, 42 ... sprocket, 41 ... chain, 43 ... rotating shaft, 44, 46 ... shaft, 47 ... piston, 48 ... Rail, 49 ... Rebar alignment device, 57, 69 ... Formwork unit, 58 ... Formwork panel, 59 ... Beam, 61 ... Formwork connector, 62a ... Rod body, 71 ... Form tie, A ... Arrangement direction, C1 ... Axis of rotation, C2 ... center of rotation, G1, G3, G5 ... first gripping part, G2, G4, G6 ... second gripping part, GA, GB, GC ... gripping means, L ... longitudinal direction, R, R1 ~ R3 ... Iron , W1 ... warm, W2 ... the worm wheel.

Claims (3)

A method for constructing a reinforcing bar and a formwork for constructing a concrete structure using a handling device attached to a construction machine,
Reinforcing bar gripping step of gripping a plurality of the reinforcing bars using the handling device;
Reinforcing bar placement step of operating the handling device to place the reinforcing bar in a predetermined position;
Using the handling device, a mold gripping step for gripping a rod body of a mold connecting tool attached to the mold,
By operating the handling device and arranging the mold in the vicinity of the reinforcing bar,
The handling device grips the reinforcing bars arranged at a predetermined interval along the arrangement direction,
The formwork connector has the rods that have substantially the same diameter as the reinforcing bars and are arranged in parallel along the arrangement direction at the predetermined interval, and a method for constructing the reinforcing bars and the formwork. The formwork connector is detachable from the formwork,
The rebar and formwork of claim 1, wherein the formwork placement step includes a step of removing the formwork connector from the formwork after the formwork is placed in the vicinity of the rebar. Construction method. 3. The reinforcing bar according to claim 1, further comprising a reinforcing bar alignment step of arranging a plurality of reinforcing bars using a reinforcing bar alignment device for arranging the reinforcing bars at a predetermined interval before the reinforcing bar holding step. And construction method of formwork.

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