JPH0643358Y2 - Cone removal tool - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cone detaching tool used when forming a concrete wall.

[Conventional technology]

Generally, when the concrete wall 24 is formed, as shown in FIG. 9, the molds 14 are erected at predetermined intervals, and the separators 15 are installed between the molds 14.
A cone 17 having a bolt rod 16 with a nut 22 protruding is screwed at both ends of the bolt rod 16 so that the bolt rod 16 is fitted and projected from the frame 14, and a joint bolt rod 18 is screwed to the protruding portion of the bolt rod 16. A press fitting 19 is fitted on the joint bolt rod 18, a single pipe 20 is arranged between the formwork 14 and the press fitting 19, and a nut 21 screwed to the joint bolt rod 18 is provided.
The mold 14 is supported by the press fittings 19 by screwing in, and the work of inflowing and hardening the concrete between the molds 14 is performed.

[Problems to be solved by the invention] By the way, when removing the cone 17, the nut 21 is removed, the press fitting 19 is removed, the single pipe 20 is removed, and then the connecting bolt rod 18 is removed, and the form 14 is removed. I will do it later. Then, the work of removing the cone 17 will be performed by an appropriate tool such as a drive wrench, but the concrete 36 often flows into the front space 23 of the cone 17,
In such a case, the concrete 36 that has solidified in the gap 23 is removed until the nut 22 is completely exposed, and then the nut 22 is securely held by a drive wrench.
22 That is, the cone 17 is rotated. Therefore, cone 17
The removal work of is very difficult, and the fact that the number of cones 17 is also very large is a serious work at present.

This invention makes it a technical subject to provide the cone attachment / detachment tool which solved such a problem.

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

The front base cylinder 1 and the rear base cylinder 2 are detachably connected by a suitable means in a non-rotatable state, a taper surface 3 is formed on the outer periphery of the front end of the front base cylinder 1, and a nut engaging hole 4 is formed at the front end. Is provided and a ring-shaped holding body 6 in which a plurality of storage portions 5 are formed on the peripheral surface is fitted. The housing hole 7 is provided in the base portion, and the ring-shaped holding body 6 is fitted into the housing hole 7 so that each of the ring-shaped holding bodies 6 is inserted. Storage part 5
The holding body 8 is disposed on the inner surface of the receiving hole 7, and the holding body 8 is provided so as to project and retract from the inner surface of the annular holding body 6 by pressing the cam surface 9 formed on the inner surface of the housing hole 7. Front base cylinder 1 at the tip
A fitting hole 10 for fitting the base portion of the rear base cylinder body 2 is formed, and a locking step portion 11 is provided in the fitting hole 10 and a connecting portion 13 for connecting to the turning tool 12 is provided at the base end portion of the rear base cylindrical body 2. The present invention relates to a cone attaching / detaching tool.

[Action]

When the connecting portion 13 of the rear base cylinder 2 is connected to the turning tool 12, the front base cylinder 1 is fitted on the bolt rod 16, and the rear base cylinder 2 is slightly rotated by hand, the front base The cam surface 9 presses the respective holding bodies 8 inwardly by the rotation of the cylindrical body 1, and the holding bodies 8 are projected from the inner surface of the annular holding body 6, and the protruding holding bodies 8 are projected.
As a result, the tip of the bolt rod 16 is clamped. When the rotating tool 12 is operated in this state, the tapered outer peripheral surface of the cone 17
17 'slides against the concrete wall 24 and the cone 17
Will be removed from the concrete wall 24.

When there is no concrete 36 in the space 23, the nut 17 is held by the nut engaging hole 4, and the nut 22 is held by the nut engaging hole 4 and the bolt rod 16 is held by the holding portion 26. Therefore, since it is held in two places, the cone 17 can be surely rotated accordingly.

When the holding body 8 is worn, the holding body 8 can be easily taken out from the front base barrel 1 simply by separating the front base barrel 1 and the rear base barrel 2.

When the cone 17 is attached, the work reverse to the above may be performed.

〔Example〕

 The drawings are one embodiment of the present invention and will be described in detail below.

Although the hexagonal hole is used as the nut engaging hole 4 in the drawing, it may be a dodecagonal hole.

Further, although the drawings show the case where the hexagon socket head cap screw 25 at one location is adopted as the connecting means for connecting the front base cylinder body 1 and the rear base cylinder body 2, the connecting means is the hexagon socket head cap bolt 25. It is not limited to this, but the point is that the front base cylinder 1 and the rear base cylinder 2 can be easily connected, and the front base cylinder 1 and the rear base cylinder 2 are in a rotation stop state. Any connecting means may be adopted as long as it is a means.

Further, the clasping portion 26 of the drawing has a storage hole 7 having a cam surface 9 having a substantially triangular cross section as an inner surface at the front end portion of the front base cylinder 1, and the storage hole 7 is formed into a cylindrical shape at equal intervals. An annular holding body 6 having three notches 27 as a storage portion 5 is formed on the cam surface 9 with a gap 28 interposed therebetween, and the roller-shaped sandwich 8 is provided in the gap 28. The figure shows a case where a structure is adopted in which the portion is fitted in such a manner as to slightly project inward from the cutout groove 27.

Needless to say, the width of the cutout groove 27 is such that the roller-shaped sandwich 8 does not fall off from the cutout groove 27.

When the roller-shaped clamping body 8 is pressed inward by the cam surface 9, the degree of protrusion of the clamping body 8 from the notch groove 27 increases, and the bolt rods 16 located in the annular holding body 6 are clamped by these. Body 8
Will be held by.

Further, since the tapered surface 3 is formed at the tip of the front base cylinder 1, even if the concrete space 36 is filled in the void 23 of the cone 17, the front base cylinder 1 is slightly pressed by pressing the front base cylinder 1 a little. Enters the back side of the cavity 23 of the cone 17. Front base cylinder 1
Since the bolt rod 16 held by the holding body 8 becomes longer as it is inserted further into the gap 23, the nut 22 is also held by the nut engaging hole 4, and thus the cone 17 Will be reliably removed.

It is needless to say that the tip of the front base cylinder 1 preferably has a diameter that fits into the space 23 of the cone 17.

Further, the connecting portion 13 in the drawing is provided with a square hole 30 into which the rotary shaft 29 of the rotary tool 12 is fitted, at the end of the rear base cylinder 2, and the square hole 30 is provided.
This is a case where the pin 31 is removably installed on the rear base, a recessed groove 32 is provided on the outer periphery near the base of the rear base cylinder 2, and a rubber ring 33 is attached to the recessed groove 32. The through hole 35 formed in the rotary shaft 29 of the tool 12 and the through hole 34 formed in the base of the rear base cylinder 2 are aligned with each other, and the pin 31 is inserted into both holes.
A rubber ring 33 is attached to the groove 32 to connect the rotating shaft 29 and the rear base cylinder 2 in a non-rotating state.

Needless to say, the structure of the connecting portion 13 is not limited to this structure.

Since the embodiment has the above-mentioned structure, when the embodiment is used, the voids 23 in the cone 17 are filled with concrete 36 and the nut
Even if 22 is buried, the cone 17 can be removed (installed) easily and reliably by holding the bolt rod 16 with the holding portion 26, which is a very convenient tool and the applicant of the present invention. Application for registration of utility model for prior application (Actual Application No. 2-56985)
No., Application for registration of utility model dated September 3, 1990 (Actual Kaihei 4-1464
No. 6)) is also used, it is extremely easy to remove Home Tie (registered trademark) (Home Tie is the name used to collectively refer to joint bolt rod 18, retainer fitting 19, and nut 21). The concrete wall forming work can be performed very efficiently.

[Effect of device]

The present invention, which is configured as described above, provides a cone attaching / detaching tool capable of attaching / detaching a cone used for forming a concrete wall very easily and speedily.

[Brief description of drawings]

1 is a front sectional view of the present invention, FIG. 2 is an exploded perspective view of the present invention, FIG. 3 is a side view of the present invention, and FIG. 4 is a sectional view taken along line AA in FIG. FIG. 5 is a sectional view taken along the line BB in FIG. 1 of the present invention, FIG. 6 is a sectional view of an essential part showing a use state of the present invention, and FIGS. 7 and 8 are explanatory views showing a use state of the present invention.
FIG. 9 is an explanatory sectional view when forming a concrete wall. 1 ... Front base cylinder, 2 ... Rear base cylinder, 3 ... Tapered surface, 4 ... Nut engaging hole, 5 ... Storage part, 6 ... Annular holder, 7 ... Storage hole, 8: Clad body, 9: Cam surface, 10
... Fitting hole, 11 ... Locking step, 12 ... Rotating tool, 13 ...
Connection part.

Claims (1)

[Scope of utility model registration request] 1. A front base cylinder and a rear base cylinder are connected by a suitable means in a non-rotating state and detachably connected, a taper surface is formed on the outer periphery of the front base cylinder, and a nut engaging hole is formed at the front end. The base is provided with an accommodating hole into which the annular holding body having a plurality of accommodating parts formed on the peripheral surface thereof is fitted, and the annular holding body is fitted into the accommodating hole, and the accommodating body is fitted in each accommodating part of the annular holding body. Is provided, and the clasp is provided so as to project and retract from the inner surface of the annular holding body by pressing the cam surface formed on the inner surface of the housing hole, while the base of the front base cylinder is attached to the tip of the rear base cylinder. A cone attaching / detaching tool, characterized in that a fitting hole for fitting is formed, a locking step portion is provided in the fitting hole, and a connecting portion for connecting to a turning tool is provided at a base end portion of a rear base cylinder.