JP2016000941A - Reinforcing bar arrangement jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing bar arrangement jig capable of efficiently arranging a main reinforcement of a half PCa beam and other reinforced concrete members, for curtailing a construction period and reducing man-hours.SOLUTION: A reinforcing bar arrangement jig A is used for arranging a main reinforcement of a reinforced concrete member, and includes: a shaft bearing part 10 extending in a vertical direction A; a roller part 11 having an end connected to the shaft bearing part 10, the connection being rotatable around a rotation axis O1 extending in a horizontal direction T2; a lifting holding part 13 connected directly or indirectly to the shaft bearing part 10 and extended upward, the lifting holding part having a grip 12 to be held by an operator; and a locking part 14 installed integrally with the shaft bearing part 10 or the lifting holding part 13, above the roller part 11 leaving an interval, the locking part being hooked on a shear reinforcement for locking the reinforcing bar arrangement jig A.

Description

  The present invention relates to a jig used when arranging main bars.

  Conventionally, it has many advantages such as rationalization of construction, productivity, and shortening of construction period. Therefore, the half PCa beam (reinforced concrete member) that has been pre-embedded in concrete under concrete and made into PCa constructs high-rise buildings. It is often used.

  In addition, this half PCa beam is installed so as to be bridged on the column with the upper bar (upper main bar) temporarily fixed, and in the state where it is installed at a predetermined position on the column, the upper bar is removed and laterally pulled. However, the bar is arranged at a predetermined position (see, for example, Patent Document 1 and Patent Document 2). Then, the beam member is formed by installing the formwork and placing the upper concrete so that the upper reinforcement is embedded and integrated with the lower concrete.

Japanese Patent Publication No.49-44723 JP 2005-1888076 A

  However, conventionally, when the half PCa beam 1 is installed on the column as described above and the upper bar 2 of the beam main bar is arranged, for example, as shown in FIG. It was necessary to place a hand in the stirrup (shear reinforcement) 3 arranged at a pitch and slide the upper reinforcement 2 to arrange the bars. For this reason, it is necessary for all workers to breathe while always holding the reinforcing bar, and to move the heavy upper muscle 2 by human power. This causes a heavy burden on the worker, and this is often involved in the work of arranging the upper muscle 2. Time and effort.

  In view of the above circumstances, the present invention provides a bar arrangement jig that can efficiently arrange main bars of a reinforced concrete member such as a half PCa beam, shorten the work period, and reduce artificial man-hours. The purpose is to do.

  In order to achieve the above object, the present invention provides the following means.

  The bar arrangement jig of the present invention is a bar arrangement jig used when the main reinforcing bar of a reinforced concrete member is arranged, and has a bearing portion extending in the vertical direction and an end that is rotatable around a rotation axis extending in the horizontal direction. A roller part provided by connecting to the bearing part, a pulling grip part provided with a handle that is directly or indirectly connected to the bearing part and extends upward, and gripped by an operator, There is an interval above the roller portion, and is provided integrally with the bearing portion or the pulling grip portion, and includes a locking portion that is hooked on a shear reinforcing bar to lock the bar arrangement jig. Features.

  Further, in the bar arrangement jig according to the present invention, a protruding portion that protrudes downward from the roller portion by a predetermined length is provided on the lower end side of the bearing portion, and extends in the horizontal direction at the other end of the roller portion. It is desirable to provide a projecting support portion that is rotatably connected around the rotation axis and projects downward.

  In the bar arrangement jig of the present invention, when the main reinforcing bar of the reinforced concrete member is arranged, the main reinforcing bar is arranged on the roller part through the reinforcing bar insertion opening between the roller part and the locking part. Install the jig.

  After the main bar is arranged on the roller part, the main bar can be easily moved up and down by the operator pulling up or lowering the bar arrangement jig with the handle of the pull-up grip part. Then, when the operator pulls the bar arrangement jig together with the main bar and locks the locking portion to the shear reinforcement bar, the bar arrangement jig can be held in a state where the main bar is arranged at a predetermined height position. it can.

  In addition, since the main bar is provided on the roller portion, the operator can easily and smoothly pull the main bar horizontally and arrange it at a predetermined position by pushing and pulling the main bar in one direction.

  As a result, it is possible to perform, for example, two or three workers by arranging the main reinforcement of the reinforced concrete member of this reinforcing bar jig. Can be reduced.

  In addition, since the roller part rotates, the main bar can be moved to a predetermined position with a simple operation of pushing and pulling, and the work can be performed with a small number of workers, so that the breathing is easy to adjust, and the bar arrangement work can be performed easily and smoothly. It becomes possible to do. Furthermore, it is possible to hold the main bar simply by hooking the locking portion on the shear reinforcement bar, and there is no need for the operator to hold the lifted main bar as in the prior art. Moreover, since the force to move up and down is not necessary or can be reduced at the time of the bar arrangement, the operator can perform the bar arrangement work efficiently without disturbing the posture.

  Therefore, according to the bar arrangement jig of the present invention, the main reinforcement of the reinforced concrete member can be efficiently arranged, and the burden on the operator can be greatly reduced, the construction period is shortened, and the artificial reduction is achieved. It becomes possible to plan.

It is a front view which shows the jig for bar arrangement which concerns on one Embodiment of this invention. It is a perspective view which shows the jig for bar arrangement which concerns on one Embodiment of this invention. It is a perspective view which shows the jig for bar arrangement which concerns on one Embodiment of this invention. It is a figure which shows the state which has arranged the upper reinforcement (the main reinforcement of a reinforced concrete member) of a half PCa beam using the reinforcement jig | tool which concerns on one Embodiment of this invention. It is a figure which shows the conventional bar arrangement work which arranges the upper bar of a half PCa beam.

  Hereinafter, with reference to FIGS. 1 to 4, a bar arrangement jig according to an embodiment of the present invention will be described. Here, in the present embodiment, at the stage where the half PCa beam is installed on the column, the bar arrangement jig (half half) that enables the upper bar of the half PCa beam to be efficiently arranged by a small number of workers. This relates to the upper bar arrangement jig for the PCa beam.

  As shown in FIGS. 1 to 3, the bar arrangement jig A of the present embodiment has one end 11a that is rotatable around a bearing portion 10 extending in the vertical direction T1 and a rotation axis O1 extending in the horizontal direction T2. A roller portion 11 provided connected to the bearing portion 10; a pulling and holding portion 13 provided with a handle 12 which is connected to the bearing portion 10 directly or indirectly and extends upward; , With a predetermined space above the roller part 11, provided integrally with the bearing part 10 or the pulling grip part 13, and hooked on the half PCa beam stirrup (shear reinforcement) to lock the bar arrangement jig A And a locking portion 14 for doing so.

  Further, in the present embodiment, the roller portion 11 is disposed with its one end 11 a connected between the upper end and the lower end of the bearing portion 10. Furthermore, the bearing part 10 is provided with the protrusion part 10a which protrudes below by the predetermined length from the roller part 11 in the lower end side. Further, a protruding support portion 15 is provided which is connected to the other end 11b of the roller portion 11 so as to be rotatable around a rotation axis O1 extending in the horizontal direction T2 and protrudes downward with the same length as the protruding portion 10a of the bearing portion 10. It has been. And the roller part 11 supports stably in the state which has arrange | positioned the rotating shaft O1 horizontally by these bearing parts 10 and the protrusion support part 15 by making the lower end of the bearing part 10 and the protrusion support part 15 contact | abut to a grounding surface. Is done.

  Further, the bar arrangement jig A of the present embodiment is such that the locking portion 14 has one end connected to the upper end of the bearing portion 10 and is opposed to the upper portion of the roller portion 11 with a predetermined interval. The portion 11 extends in the horizontal direction T2 along the rotation axis O1. Accordingly, in the bar arrangement jig A of the present embodiment, the bearing portion 10, the roller portion 11, and the locking portion 14 are arranged in a substantially U shape, and the other end 11b of the roller portion 11 and the locking portion 14 A reinforcing bar insertion opening 16 for inserting a reinforcing bar between the other end and installing it on the roller part 11 is formed.

  Furthermore, the latching | locking part 14 is provided with the 1st latching piece 17 which protrudes below in the other end part. Moreover, the latching | locking part 14 is provided with the 2nd latching piece 18 and the 3rd latching piece 19 which protrude below at the one side edge part and the other side edge part, respectively. The second locking piece 18 and the third locking piece 19 are arranged with a gap between the bearing portion 10 and the first locking piece 17 in the horizontal direction T2 along the rotation axis O1 of the roller portion 11. This gap forms a locking groove 20 for engaging and hooking the stirrup.

  The pulling and gripping portion 13 of this embodiment has a lower end connected to the upper surface of the locking portion 14, a shaft portion 21 extending upward, and an upper end of the shaft portion 21 connected to the rotation axis O <b> 1 of the roller portion 11. And a handle 12 extending in the horizontal direction T <b> 2 that extends along the horizontal direction T <b> 2. Furthermore, in the present embodiment, the lower end of the shaft portion 21 is connected to the approximate center of the upper surface of the locking portion 14, and the rotation axis O <b> 1 of the roller portion 11 is disposed on the extension line of the central axis O <b> 2 of the shaft portion 21. Thus, a pulling grip 13 is provided.

Next, the effect of the bar arrangement jig A of the present embodiment having the above-described configuration will be described.
As shown in FIG. 4 (and FIGS. 1 to 3), when the upper reinforcement (main reinforcement) 2 is arranged using the reinforcement arrangement jig A of the present embodiment, the upper reinforcement 2 is temporarily fixed. The half PCa beam (part of the reinforced concrete member) 1 is installed so as to be bridged on the column, and the upper bar 2 is removed. Then, the bar arrangement jig A is installed so that the upper bar 2 is arranged on the roller part 11 through the reinforcing bar insertion opening 16.

  At this time, a protruding portion 10a protruding downward from the roller portion 11 with a predetermined length is provided on the lower end side of the bearing portion 10, and the upper end is connected to the other end of the roller portion 11, and the protruding portion 10a of the bearing portion 10 A protruding support portion 15 that protrudes downward with the same length is provided. For this reason, when the lower ends of the bearing portion 10 and the protruding support portion 15 are brought into contact with the upper surface (grounding surface) of the lower concrete of the half PCa beam 1, the bearing portion 10 and the protruding support portion 15 are moved upward on the roller portion 11. The streak 2 is supported in a stable state, and is supported in a state where a gap is provided between the lower side concrete. Thereby, an operator can put a finger in the gap between the upper reinforcement 2 and the lower concrete to grasp the upper reinforcement 2 and move it easily.

  Further, after the upper barb 2 is arranged on the roller part 11, the operator pulls up and down the bar arrangement jig A by holding the handle 12 of the pull-up grip part 13 so that the upper barb 2 can be easily moved up and down. Can be moved to. Then, when the operator raises the bar arrangement jig A together with the upper reinforcement 2, the star wrap 3 is fitted in the engagement groove 20 and the engagement portion 14 is engaged with the star wrap 3, the upper reinforcement 2 is The bar arrangement jig A can be held in a state of being arranged at a height.

  Further, since the upper muscle 2 is provided on the roller portion 11, when the operator pushes and pulls the upper muscle 2 in one direction, the upper muscle 2 is easily and smoothly pulled horizontally and arranged at a predetermined position. can do.

  Therefore, in the bar arrangement jig A according to the present embodiment, for example, the bar arrangement work can be performed by two or three workers by using the upper barb 2 of the half PCa beam 1 for bar arrangement. Therefore, compared with the conventional case, the artificial can be reduced.

  In addition, since the roller portion 11 rotates, the upper muscle 2 can be moved to a predetermined position by a simple operation of pushing and pulling, and work can be performed by a small number of workers, so that breathing is easy and easy and smooth arrangement. It is possible to perform muscle work. Further, the upper muscle 2 can be held only by hooking the locking portion 14 on the stirrup 3, and it is not necessary for the operator to hold the raised upper muscle 2 as in the prior art. Furthermore, since the force to move up and down is not necessary or can be reduced at the time of the bar arrangement, the operator can perform the bar arrangement work efficiently without disturbing the posture.

  Therefore, according to the bar arrangement jig A of the present embodiment, the upper bar 2 of the half PCa beam 1 can be arranged efficiently, and the burden on the operator can be greatly reduced. It becomes possible to aim at shortening and artificial reduction.

  As mentioned above, although one Embodiment of the bar arrangement jig which concerns on this invention was described, this invention is not limited to said one Embodiment, In the range which does not deviate from the meaning, it can change suitably.

  For example, in the present embodiment, the bar arrangement jig A according to the present invention has been described as a jig for arranging the upper barb 2 of the half PCa beam 1, but the bar arrangement according to the present invention is described. The jig A does not necessarily have to be used to arrange the upper reinforcement 2 of the half PCa beam 1. Any reinforced concrete in which main reinforcements such as beams and floors are arranged in the horizontal direction and have shear reinforcements. It is applicable to the reinforcement of the main reinforcement of the member.

In the present embodiment, the bar arrangement jig A includes the protruding portion 10a and the protruding support portion 15 of the bearing portion 10, and the lower ends of the bearing portion 10 and the protruding support portion 15 are in contact with the grounding surface. The upper muscle (main muscle) 2 was installed on the roller part 11.
On the other hand, the engaging portion 14 is engaged with the stirrup (shear reinforcing bar) 3 and the bar arrangement jig A is set first, and the main bar 2 is later placed on the roller portion 11 of the bar arrangement jig A in this state. The bar arrangement work may be carried out by installing.

Further, in the present embodiment, the half PCa beam (reinforced concrete member) 1 is transported to a predetermined position on the column in a state where the upper bar 2 is temporarily fixed, and the upper bar 2 is removed at a stage where it is installed at a predetermined position. The description was made assuming that the bars are arranged using the jig A.
On the other hand, after the half PCa beam 1 is installed, only the upper bar 2 may be separately conveyed and inserted from the side of the slur tap to be arranged. In this case, for example, at the stage where two bar arrangement jigs A are arranged close to the insertion side where the upper bar 2 is inserted and the upper bar 2 is inserted and inserted to some extent (for example, half or more), 1 The position of the two bar arrangement jigs A is moved (or a new bar arrangement jig A is installed near the tip of the upper barb 2), and the upper barb 2 is inserted (moved). Good.

1 Half PCa beam (Reinforced concrete member)
2 Upper muscle (main muscle)
3 Stirrup (shear reinforcement)
DESCRIPTION OF SYMBOLS 10 Bearing part 10a Protrusion part 11 Roller part 11a One end 11b Other end 12 Handle 13 Pulling grip part 14 Locking part 15 Protrusion support part 16 Reinforcing bar insertion opening 17 1st locking piece 18 2nd locking piece 19 3rd locking piece 20 Locking groove 21 Shaft part A Arrangement jig O1 Rotating shaft O2 Center axis T1 of pulling gripping part Vertical direction T2 Horizontal direction

Claims (2)

A reinforcing jig used for reinforcing the main reinforcement of a reinforced concrete member,
A bearing portion extending in the vertical direction;
A roller part provided with one end connected to the bearing part so as to be rotatable around a rotation axis extending in the horizontal direction;
A pulling and holding portion that is directly or indirectly connected to the bearing portion and extends upward, and has a handle that an operator holds,
There is an interval above the roller portion, provided integrally with the bearing portion or the pulling grip portion, and provided with a locking portion for hooking on a shear reinforcing bar to lock the bar arrangement jig. Reinforcing bar jig characterized by The bar arrangement jig according to claim 1,
A protrusion that protrudes downward at a predetermined length from the roller part is provided on the lower end side of the bearing part,
A bar arrangement jig characterized in that a protruding support portion protruding downward is connected to the other end of the roller portion so as to be rotatable around a rotation axis extending in the horizontal direction.

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