JP7330009B2 - Concrete formwork hammering jig and concrete formwork hammering device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a jig for striking concrete formwork and a concrete formwork striking device.

Conventionally, when placing concrete, an electric formwork vibrator is attached to the concrete formwork, or an air hammer or cordless vibrator is used to hit the formwork to compact and fill the concrete. The condition is improved and the quality is improved (see Patent Document 1, for example).

JP 2013-163965 A

However, the conventional hammering method for concrete formwork has the following problems.
That is, in the case of an electric or air-driven formwork vibrator, it is necessary to route power cables, air hoses, etc., and there is a problem that this routing work is complicated in a narrow working environment.
In addition, depending on the location, it may not be possible to secure a sufficient power source, and in such cases workers manually strike with a wooden mallet.

Furthermore, in the case of a cordless vibrator, although it does not have a power cable, since it is equipped with a large battery, it weighs as heavy as, for example, 4 kg. was difficult.
Furthermore, since the conventional vibrator is large, it is extremely difficult to perform impact work in a narrow space, and the work efficiency is also lowered, so there is room for improvement in this respect.

The present invention has been made in view of the above-mentioned problems, and is a concrete that can be used for a long time, can efficiently perform concrete hitting work in a narrow space, and can improve the quality of concrete. It is an object of the present invention to provide a formwork hitting jig and a concrete formwork hitting device.

In order to achieve the above object, a jig for striking a concrete form according to the present invention provides at least a striking motion out of a rotating motion and a striking motion for striking from the outer surface of a concrete form that is placed when placing concrete. Concrete form striking jig attached to a motion-driven hand-held rechargeable striking device body, wherein the tip is attached by non-rotatably and detachably fitting to the striking device body. a fitting portion; and an impact tool portion that is rotatably supported by the tip fitting portion via a bearing and has a striking surface capable of abutting against the concrete formwork, wherein the tip fitting portion includes the It has a fitting shaft portion attached to the striking device main body and a mounting support portion connected to the fitting shaft portion, and the mounting support portion is formed with a mounting hole to which the fitting shaft portion is connected. and a small diameter portion to which the impact tool portion is attached. The impact tool portion is fitted to the outside of the small diameter portion via the bearing, and the impact tool portion includes: It is characterized in that the rotary motion of the percussion device main body is not transmitted, and only the percussion motion is transmitted.

Further, a concrete form striking device according to the present invention is a concrete form striking device for striking from the outer surface of a concrete form installed when concrete is placed, and A hand-held, rechargeable striking device body that is driven by at least striking motion; a tip end fitting portion that is non-rotatably and detachably fitted to the striking device body; an impact tool portion that is rotatably supported via a bearing and has an impact surface capable of abutting against the concrete formwork, wherein the tip fitting portion is a fitting shaft portion that is attached to the impact device body; and a mounting support portion connected to the fitting shaft portion, the mounting support portion having a large diameter portion formed with a mounting hole to which the fitting shaft portion is connected, and the impact tool portion. a small diameter portion to be attached, wherein the impact tool portion is fitted to the outside of the small diameter portion via the bearing, and the rotary motion of the impact device main body is not transmitted to the impact tool portion. , characterized in that only the percussion motion is transmitted.

In the present invention, the front end fitting portion of the jig for striking concrete formwork is attached to a small hand-held striking device main body, and the rotary motion of the striking device main body is not transmitted from the front end fitting portion to the striking tool portion. , only the impact motion is transmitted from the tip fitting portion to the impact tool portion, and the impact surface of the impact tool portion can be pressed against the outer surface of the concrete mold to give impact. In this way, the concrete form striking device, in which the concrete form striking jig is attached to the striking device main body, has a lightweight structure that allows it to be hand-held. can.

In addition, in the present invention, as described above, the concrete form hammering apparatus can be made compact and lightweight, and since it is a rechargeable type, there is no need to handle cables, air hoses, etc. during use, so concrete can be efficiently hammered even in narrow spaces. work can be done. As a result, it is possible to prevent uneven compaction of the placed concrete, and to improve the filling state and improve the quality of the concrete.
Furthermore, even in places where hammering could only be done with a wooden mallet, or where there is no space to swing a mallet, etc., the concrete form hammering device of the present invention can be carried around to perform hammering work on the concrete form. Therefore, it is possible to improve the quality.

Further, in the jig for striking a concrete mold according to the present invention, an axial direction perpendicular to the striking surface of the striking tool portion may coincide with the direction of striking movement of the striking device main body.

In this case, by pressing the striking surface of the striking tool part against the concrete formwork, the striking energy of the striking device body can be efficiently transmitted to the concrete formwork, and the placed concrete can be reliably vibrated. can give

INDUSTRIAL APPLICABILITY According to the concrete form striking jig and the concrete form striking apparatus of the present invention, it is possible to use the tool for a long period of time, and it is possible to efficiently perform concrete striking work in a narrow space, thereby improving the quality of concrete. can do.

1 is a side view of a concrete form striking device equipped with a concrete form striking jig according to an embodiment of the present invention; FIG. It is a cross-sectional view which shows the structure of the jig for hitting a concrete formwork.

EMBODIMENT OF THE INVENTION Hereafter, the jig|tool for concrete form striking and concrete form striking apparatus by embodiment of this invention are demonstrated based on drawing.

The concrete form striking device according to the present embodiment shown in FIG. 1 (hereinafter simply referred to as the form striking device 1) is used when striking from the outer surface 4a of a concrete form 4 installed when concrete is placed. It is what is done.

The formwork striking device 1 includes a hand-held, rechargeable striking device body 2 driven by rotary motion and striking motion, and a concrete formwork striking jig 3 fitted to the striking device body 2. and have.

The striking device main body 2 includes a driving portion 21 such as a motor that applies a rotational force and a striking force to the tip fitting portion 30, a grip portion 22 that is held by a person, and a charging portion that supplies electricity to the driving portion 21. 23 and . The driving portion 21 is coaxially connected to the leading end fitting portion 30 of the concrete form hitting jig 3 with respect to the rotating shaft of the driving portion 21 . The grip portion 22 is formed in a case 24 that houses the driving portion 21 and the charging portion 23 .

As shown in FIG. 2, the concrete form impacting jig 3 has a cylindrical shape with a circular cross section and extends in the axial direction, and is coaxially fitted with respect to the rotation center axis O of the impacting device main body 2. It has a tip fitting portion 30 to be attached.
The jig 3 for impacting concrete formwork includes the above-described tip fitting portion 30 that is non-rotatably and detachably attached to the tip fitting portion 30 of the impact device main body 2, and a bearing for the tip fitting portion 30. 33 (33A, 33B) is rotatably supported, and has a striking surface 32a capable of coming into contact with the outer surface 4a of the concrete formwork 4.

The tip fitting portion 30 has a mounting support portion 31 and a fitting shaft portion 34 integrally provided with the mounting support portion 31 by screwing.
The fitting shaft portion 34 is a rod-shaped member that protrudes from the case 24 in a state where the rotating shaft of the driving portion 21 is the rotation center axis O and the fitting shaft portion 34 is fitted to the striking device main body 2 . As shown in FIG. 2, the fitting shaft portion 34 has a protruding portion 34a protruding outward in a radial direction orthogonal to the rotation center axis O on the front end side thereof. A male thread 34b is formed on the peripheral surface on the tip side of the convex portion 34a. The fitting shaft portion 34 is driven by the driving portion 21 to rotate about the rotation center axis O (rotation in the direction of arrow E) and to reciprocate along the rotation center axis O (thrust motion in the direction of arrow F). movement) is granted.

The mounting support portion 31 has a mounting hole 31b formed with a female screw 31a on the mounting side. The mounting support portion 31 is opposed to the fitting shaft portion 34, and the female thread 31a is screwed into the male thread 34b of the fitting shaft portion 34, and the end face 31c is tightened to a position where it contacts the convex portion 34a. It is provided integrally with the shaft portion 34 . The attachment support portion 31 has a large diameter portion 311 in which an attachment hole 31b is formed, and a small diameter portion 312 to which the impact tool portion 32 is rotatably fitted.

The impact tool portion 32 includes a cylindrical body 321 fitted to the outside of the small-diameter portion 312 of the mounting support portion 31 via a pair of bearings 33A and 33B, and a tip impact closing the opening of the cylindrical body 321 by screwing it. a portion 322; The tip end surface of the tip striking portion 322 serves as the aforementioned striking surface 32a.

The bearing 33 has a first bearing 33A provided between the tubular body 321 and the large diameter portion 311 and a second bearing 33B provided between the tubular body 321 and the small diameter portion 312. .
The mounting support portion 31 transmits the rotation and impact of the striking device main body 2 in a state where the fitting shaft portion 34 is fitted to the striking device main body 2 . That is, the mounting support portion 31 rotates around the rotation center axis O together with the fitting shaft portion 34 . On the other hand, since the impact tool part 32 is separated from the mounting support part 31 via the bearing 33, the rotation of the mounting support part 31 is not transmitted, and the impact tool part 32 is in a non-rotating state. In other words, the impact tool portion 32 does not transmit the rotational motion of the tip fitting portion 30, and only the impact motion is transmitted.

The hitting surface 32a has a plane orthogonal to the rotation center axis O, and gives vibration due to hitting by coming into contact with the hit part (concrete formwork 4). The striking surface 32a does not rotate, and only the reciprocating vibration (symbol F) in the direction along the rotation center axis O acts on the striking surface 32a.

Next, the action of the jig for striking concrete formwork and the apparatus for striking concrete formwork described above will be described in detail with reference to the drawings.
In the present embodiment, as shown in FIGS. 1 and 2, a tip fitting portion 30 of a jig for striking a concrete formwork 3 is attached to a compact striking device main body 2 that can be held by hand, and the striking device main body 2 is rotated. The motion is not transmitted from the tip fitting portion 30 to the impact tool portion 32, and only the impact motion is transmitted from the tip fitting portion 30 to the impact tool portion 32 so that the impact surface 32a of the impact tool portion 32 is placed on the concrete formwork. 4 can be hit against the outer surface 4a. As described above, the concrete form striking device 1 having the concrete form striking jig 3 attached to the striking device main body 2 has a light weight structure that can be hand-held, so that it can be used for a long time and the working efficiency is improved. can be planned.

In addition, in this embodiment, as described above, the concrete form striking device 1 can be made compact and lightweight, and since it is rechargeable, it is unnecessary to handle cables, air hoses, etc. during use, so it can be efficiently used even in narrow places. Concrete striking work can be performed. As a result, it is possible to prevent uneven compaction of the placed concrete, and to improve the filling state and improve the quality of the concrete.
Furthermore, even if there is no space for swinging the mallet in a place where hammering can only be done with a wooden mallet or in a narrow place, the concrete form hammering device 1 of the present embodiment can be carried and hit against the concrete form 4. Since impact work can be performed, the quality can be improved.

In addition, in this embodiment, since the axial direction orthogonal to the striking surface 32a of the striking tool portion 32 coincides with the direction of striking movement of the striking device main body 2, the striking surface 32a of the striking tool portion 32 is placed on the concrete formwork 4. , the impact energy of the impact device main body 2 can be efficiently transmitted to the concrete form 4, and the placed concrete can be reliably vibrated.

As described above, the concrete form hitting jig and the concrete form hitting device according to the present embodiment can be used for a long time, and can efficiently perform concrete hitting work in a narrow space. Quality can be improved.

Although the embodiments of the concrete form hitting jig and the concrete form hitting device according to the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit of the present invention. Can be changed.

For example, in the present embodiment, the impact device main body 2 is driven by rotary motion and impact motion, but the structure of the impact device main body 2 is not limited to the rotary motion. That is, the striking device main body 2 only needs to be configured to be driven by at least striking motion.

In the present embodiment, the tip fitting portion 30 is separated into the mounting support portion 31 and the fitting shaft portion 34 and is connected by screwing. It does not matter if it is a member that has been

In the present embodiment, the axial direction perpendicular to the striking surface 32a of the striking tool portion 32 of the concrete mold striking jig 3 coincides with the striking movement direction of the striking device main body 2, but does not completely coincide. It is not limited to being In other words, the axial direction perpendicular to the striking surface 32a of the striking tool portion 32 may cross the striking motion direction of the striking device main body 2 with a deviation.

Further, the configuration such as the shape of the concrete mold striking jig 3, the number of bearings 33, the mounting position, etc. can be changed as appropriate. Furthermore, the structure for attaching the concrete mold hammering jig 3 to the hammering device main body 2 is not limited to screw engagement as in the present embodiment, and other attaching and detaching methods may be adopted. is also possible.

In addition, it is possible to appropriately replace the components in the above-described embodiments with well-known components without departing from the scope of the present invention.

1 formwork impact device (concrete formwork impact device)
2 Striking Device Main Body 3 Concrete Form Striking Jig 4 Concrete Form 4a Outer Surface 21 Driving Part 22 Gripping Part 23 Charging Part 30 Tip Fitting Part 31 Mounting Support Part 32 Striking Tool Part 32a Striking Surface 33 Bearing 33A First Bearing 33b Second bearing 34 Fitting shaft portion O Rotation center axis

Claims (3)

A concrete mold that is mounted on a hand-held, rechargeable striking device that is driven by at least the striking motion of the rotating motion and the striking motion, in order to strike from the outer surface of the concrete formwork that is installed when pouring concrete. A frame striking jig,
a tip end fitting portion that is mounted by being non-rotatably and detachably fitted to the impact device main body;
an impact tool portion rotatably supported by the tip end fitting portion via a bearing and having an impact surface capable of coming into contact with the concrete formwork;
with
The tip fitting portion has a fitting shaft portion attached to the striking device main body and a mounting support portion connected to the fitting shaft portion,
The attachment support portion includes a large diameter portion formed with an attachment hole to which the fitting shaft portion is connected, and a small diameter portion to which the impact tool portion is attached,
The impact tool portion is fitted to the outside of the small diameter portion via the bearing,
A jig for striking a concrete formwork, wherein the striking tool portion does not transmit the rotary motion of the striking device main body, but transmits only the striking motion. 2. A jig for striking a concrete formwork according to claim 1, wherein an axial direction perpendicular to the striking surface of said striking tool portion coincides with the direction of striking movement of said striking device body. A concrete form striking device for striking from the outer surface of a concrete form installed when pouring concrete,
a hand-held rechargeable striking device main body driven by at least striking motion out of rotary motion and striking motion;
a tip end fitting portion that is mounted by being non-rotatably and detachably fitted to the impact device main body;
an impact tool portion that is rotatably supported by the tip fitting portion via a bearing and has an impact surface capable of coming into contact with the concrete formwork;
with
The tip fitting portion has a fitting shaft portion attached to the striking device main body and a mounting support portion connected to the fitting shaft portion,
The attachment support portion includes a large diameter portion formed with an attachment hole to which the fitting shaft portion is connected, and a small diameter portion to which the impact tool portion is attached,
The impact tool portion is fitted to the outside of the small diameter portion via the bearing,
A concrete form impacting device, wherein the impacting tool portion does not transmit the rotary motion of the impacting device main body, but transmits only the impacting motion.

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