JP2529763Y2 - Hoop reinforcement setup for shaft - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft fitting for a vertical shaft hoop which is suitable for use in rebar work in a shaft excavated for construction of a deep foundation method or the like.

[0002]

2. Description of the Related Art Normally, when reinforced concrete is driven into a shaft excavated for construction of a deep foundation method, the inner wall surface of the shaft is protected by a liner plate so as not to collapse.
Then a liner plate (or a reinforcing ring interposed between upper and lower liner plates at appropriate intervals)
A workbench is set up using it, and bar arrangement work is performed on it. The liner plate is generally formed in an arc shape by a corrugated plate such as a steel plate, and has a horizontal flange and a vertical flange for mounting around the periphery integrally, and these flanges are connected by bolts and nuts by butting up and down and right and left. Then, a liner plate is attached around the entire inner wall surface of the excavated hole, and then rebar arrangement work is performed. The bar arrangement work is performed by assembling vertical bars and horizontal bars (hoop bars) along the surface of the liner plate 2 from the bottom of the shaft to the top. The hoop streak is arc-shaped and is held by two or three workers, and is fixedly locked by being sequentially tied to the streak by a wire.

[0003]

[Problem to be Solved by the Invention] As described above, the conventional bar arrangement work is completely manual work, and two or three workers have to carry the hoop streaks by hand. And the work efficiency is extremely low.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems. The purpose of the present invention is to make it necessary for an operator to have a hoop streak when binding the hoop streak to a vertical streak. It is therefore an object of the present invention to provide a shaft hoop stitch setup tool which allows only one worker to perform hoop streak fixing and locking work, thereby improving work efficiency of bar arrangement.

[0005]

In order to achieve the above object, the present invention has a fitting hole into which a bolt or nut for fastening a horizontal flange of a corrugated liner plate attached to the inner surface of a shaft is fitted. An upper plate detachably mounted on the flange, a stopper rotatably provided on the upper plate, and a stopper for preventing the upper plate from falling down by abuttingly engaging the lower slope of the wave portion of the upper liner plate; A guide bar extending below the upper plate, a slide lever movably mounted on the guide bar, and a slide lever vertically movable at predetermined intervals in the height direction of the slide lever. A plurality of support levers disposed on the hoop muscle, a stopper member for locking the slide lever at a hoop muscle support position, and a height direction of the guide bar. The slide lever is provided at a constant interval which is constituted by a plurality of support portions for supporting substantially horizontally the respective support lever when locked to the hoop support position.

[0006]

The shaft hoop stitch setup metal fitting is removably mounted along the surface of the liner plate by fitting the fitting hole of the upper plate to a bolt or nut for fastening the horizontal flange of the liner plate. The stopper abuts and engages with the lower slope of the wave portion of the liner plate to prevent the shaft hoop streak setup tool from falling off the liner plate. The support lever supports the hoop muscle by being held substantially horizontally by the support portion of the guide bar. The stopper member locks the slide lever at the hoop muscle supporting position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a perspective view of a use state showing an embodiment of a shaft hoop stitch setting tool for a shaft according to the present invention, FIG. 2 is a side view of a main part of the same, FIG. 3 is an exploded perspective view of a main part of the same. 4
Is a plan view of the metal fitting. In these figures, 1 (1
A, 1B, 1C...) Are liner plates adhered along the inner wall surface of the shaft 2, and the liner plate 1 is formed in a corrugated shape, and has a horizontal flange 3 and a vertical flange around the periphery thereof for mounting. (Not shown),
These flanges are butted up and down and left and right and are connected to each other by a plurality of bolts 4 and nuts 5 to form a shaft 2
It is stretched around the entire inner wall of the building. Reference numeral 6 denotes a reinforcing bar assembled along the surface of the liner plate 1. The reinforcing bar 6 includes a plurality of vertical bars 7 standing substantially concentrically at predetermined intervals in the circumferential direction of the liner plate 1. The intersection with the vertical streak 7 is arranged at a predetermined interval in the height direction, and the intersection with the vertical streak 7 is constituted by an arc-shaped vertical streak 8 fixedly fixed to the vertical streak 7 by a wire.

Reference numeral 9 denotes a vertical hoop stitch setup tool which is disposed vertically along the surface of the liner plate 1 and supports the hoop streaks 8 before being fixedly fixed to the vertical streaks 7. A plurality of, for example, two, are arranged at required intervals to hold both end portions of the hoop streaks 8. Further, the configuration and the like of the hoop stitch setup metal fitting 9 will be described in detail. The metal fitting 9 includes an upper plate 10 formed in a U-shape in plan view. The upper plate 10 is formed in a rectangular plate-like body that is long in the radial direction of the shaft 2, and has a fitting hole 11 and a rectangular hole 12 formed at both ends in the longitudinal direction. 4 head 4A (or nut 5
Is mounted above the bolt 4 so as to be detachably mounted on the lateral flange 3 by fitting with a nut).
The rectangular hole 12 is formed at the center in the width direction of the upper plate 10, and one end is open to the front end surface of the upper plate 10. Further, a stopper 13 is provided at a substantially central portion of the upper surface of the upper plate 10. The stopper 13 prevents the upper plate 10 from falling off from the liner plate 1 and is formed of a wedge-shaped plate body in a side view, and has a base formed on the upper plate 10.
When it is pivotally attached to a bracket (not shown) provided above via a bolt 14 in a vertical direction via a bolt 14 and is tilted rearward as shown by a two-dot chain line in FIG. Abuts on the lower slope of the lowermost wave portion 16 of the liner plate 1 to prevent the upper plate 10 from floating. A guide bar 21 is detachably attached to the lower surface of the upper plate 10 via a lower plate 20.

The lower plate 20 is provided with the upper plate 1
The upper plate 1 is fixed to the lower surface of the upper plate 1 by a pair of left and right bolts 22 (FIG. 3) and a nut (not shown).
A rectangular hole 23 having the same width as the rectangular hole 12 is formed at the end opposite to the rectangular hole 23.
A pair of left and right bolt insertion holes 24 through which the bolts are inserted are formed. For this reason, bolt mounting holes 25 are also formed in the upper plate 10. In this case, the bolt mounting holes 25 of the upper plate 10 are formed two on each side of the rectangular hole 12 of the upper plate 10 so that a total of four bolt mounting holes 25 are formed.
The mounting position of the lower plate 20 is shifted in the front-rear direction in accordance with the position of the hoop streaks 8 so that the lower plate 20 can be mounted.

The guide bar 21 extends below the upper plate 10 and is formed in a U-shape in a plan view so as to have a sliding groove 26 composed of a vertical groove. It is arranged via a reinforcing member 27. A slide lever 28 is slidably provided in the slide groove 26 of the guide bar 21, and the upper end of the slide lever 28 extends above the upper plate 10 from the rectangular hole 12. Further, a stopper portion 29 and a plurality of support portions 3 are provided inside the sliding groove 26.
0 is provided. The stopper portion 29 is provided on the upper end opening side of the sliding groove 26, and the both ends thereof are the bracket 3.
1 (FIG. 3). The support portion 30 is composed of pins arranged near the opening end of the slide groove 26 at a predetermined interval in the height direction of the guide bar 21, and both ends are supported between both side plates of the guide bar 21. I have.

The slide lever 28 is a vertically elongated plate-like body and is slidably inserted from above into the slide groove 26 of the guide bar 21. At the upper end of the slide lever 28, a stopper member 32 rotatable in the vertical direction is provided corresponding to the stopper portion 29.
The stopper member 32 is formed in a substantially trapezoidal shape when viewed from the side, and the upper end on the base side is rotatably connected to the slide lever 28 by a pin 33 in the vertical direction.
Is formed near the front end of the lower surface, and when the engagement between the stopper portion 29 and the engagement recess 34 is released,
A recess 35 is formed for hooking a finger to rotate the slide lever 28 upward. Slide lever 28
A ring 36 for lifting the slide lever 28 is provided at the upper end of the slide lever 28. The slide lever 28 is provided with a stopper plate 37 and a plurality of support levers 38. The stopper plate 37 has a function similar to that of the stopper member 32, and is joined to the upper end side of the rear surface of the slide lever 28. The stopper plate 37 contacts the upper surface of the upper plate 10 to move the slide lever 28 to the hoop muscle supporting position. To prevent downward movement. The support lever 38 moves the hoop streaks 8 when the hoop stitch setting tool 9 is used.
The base is rotatably supported in the vertical direction by a shaft pin 39 disposed at a predetermined interval in the longitudinal direction of the slide lever 28, and the stopper plate 37 is attached to the upper plate 10 Slide lever 2 that contacts the upper surface of
In a state in which 8 is installed at the hoop muscle support position, as shown in FIG. 2, the lower surface intermediate portion is configured to contact the support portion 30 and be supported substantially horizontally. After use, when the lock state of the slide lever 28 by the stopper member 32 is released, and the ring 36 is gripped and the slide lever 28 is pulled up, the support lever 38 is pulled up upward on the base side. Then, it is stored in the sliding groove 26 of the guide bar 21.

In the hoop stitch setting metal fitting 9 having the above-described structure, the head 4A of the bolt 4 is fitted into the fitting hole 11 of the upper plate 10 in advance, and
Is set on the horizontal flange 3 of the liner plate 1, and the stopper 13 is attached to the lowermost corrugated portion 1 of the upper liner plate 1.
The upper plate 10 is fixed on the horizontal flange 3 by abuttingly engaging the lower slope 6. Next, the slide lever 28 is lowered along the slide groove 26 to bring the stopper plate 37 into contact with the upper surface of the upper plate 10, and the stopper member 32 is engaged with the stopper portion 29 to support the slide lever 28 with the hoop muscle support. Lock in position. In this state, each support lever 38 is horizontally held by the support portion 30, and the hoop streaks 8 are placed on the upper surface. Then, the hoop 8 supported by each support lever 38 is tied to the vertical streak 7 with a wire. In this case, since the hoop streaks 8 are supported by the support lever 38, the operator does not need to bother holding the hoop streaks 8 by hand, and the arrangement work is simple and the work can be performed alone. . When all the hoops 8 supported by the hoop stitches 9 are tied to the vertical streaks 7, the hoop stitches 9 are removed from the liner plate 1 and set on the liner plate further above. Is tied to the vertical bar 7 and the hoop bar 8 is tied over the entire length of the vertical bar 7 to complete the bar arrangement work.

[0013]

[Effects of the Invention] As described above, the vertical hoop stitch setting tool according to the present invention is mounted along the surface of the liner plate during the arrangement work, and is configured to support the hoop streak by the support plate. Even if the two workers do not support the hoop streak, the hoop streak can be fixedly fixed to the vertical streak, and the workability of the bar arrangement work can be remarkably improved. Further, since the hoops need only be placed on the support plate, only one worker can perform the arrangement work, and the practical effect is great.

[Brief description of the drawings]

FIG. 1 is a perspective view of a use state showing an embodiment of a shaft hoop stitch setting tool for a shaft according to the present invention.

FIG. 2 is a side view of a main part of the metal fitting.

FIG. 3 is an exploded perspective view of a main part of the metal fitting.

FIG. 4 is a plan view of the metal fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liner plate 2 Vertical shaft 6 Arrangement of a bar 7 Vertical streaks 8 Hoop streaks 9 Hoop streaks setup tool for a shaft 10 Upper plate 11 Fitting hole 13 Stopper 20 Lower plate 21 Guide bar 26 Sliding groove 28 Slide lever 29 Stopper part 30 Support part 32 Stopper member 38 Support lever

Claims (1)

(57) [Scope of request for utility model registration] An upper plate having a fitting hole into which a bolt or a nut for fastening a horizontal flange of a corrugated liner plate attached to an inner surface of a shaft is fitted, and which is detachably mounted on the horizontal flange, A stopper rotatably provided on the plate to prevent the upper plate from falling down by abuttingly engaging with a lower slope of a wave portion of the upper liner plate; and a guide bar extending below the upper plate. And a plurality of slide levers disposed on the guide bar so as to be movable up and down, and a plurality of hoops on which hoops are placed and which are arranged rotatably up and down at predetermined intervals in the height direction of the slide levers. A support lever, a stopper member for locking the slide lever at the hoop muscle support position, and a slide lever provided at a predetermined interval in the height direction of the guide bar, and A plurality of support portions for supporting each of the support levers substantially horizontally when locked at the girder support position.