JPWO2016027339A1 - Concrete formwork tools - Google Patents

Abstract

[PROBLEMS] To provide a tool that can be applied to various types of concrete formwork, can efficiently use rotational driving force by power, can be operated only by hand, and can work efficiently depending on the situation of the work place. To do. A barrel body 20 of an axially movable long tool 100 is formed with a through-hole 22 in a direction intersecting the axial direction at a position spaced a predetermined distance from the end of the long tool. A hexagonal opening 10 is provided at the distal end of the body 20, and a substantially rectangular cavity 21 continuous from the hexagonal opening along the axial direction is provided in the body 20 inside the hexagonal opening. A detachable portion 30 is provided at one end of the power tool, and the power tool or the separator insertion tool 200 can be detachably attached to the detachable portion 30. [Selection] Figure 1

Description

  The present invention relates to a concrete formwork working tool used when performing work such as assembling or removing a concrete formwork. Specifically, it is a tool in which a through-hole that intersects the axial direction of the trunk body is drilled in the trunk body of a long tool that is rotationally driven by power, and can be applied to various types of concrete formwork. In addition, the present invention relates to a tool that can be used efficiently by appropriately using work using power and manual work.

  The work of assembling and removing the concrete formwork includes the following work. First, the work of assembling the mold includes the work of determining the positions of the facing molds and disposing and fixing a separator for keeping the distance between the molds constant. There is an operation to tighten the formwork from the outside so that the formwork is not deformed by the pressure from the inside of the formwork due to pouring of the concrete that has not yet solidified. And after concrete hardens, there is work which removes a formwork from a concrete structure.

  In order to dispose the separator, a mold fastener is fixed to the end of the separator with the end of the separator protruding outside the first mold facing each other. Then, the separator extending inward of the mold facing the first mold is passed through the separator through hole of the second mold, and the end of the separator passed from the second mold to the outside The mold fasteners are attached and fixed to each other, and the molds facing each other are fixed.

  Next, arrange the steel pipes etc. along the formwork via the formwork fastener so that the formwork will not be deformed by the pouring pressure of the concrete that has not yet solidified, and lock the chain to the steel pipe etc. Pull the chain with a tensioner so that the chain does not loosen, and tighten the formwork. Then, concrete that has not yet been solidified is poured into the mold so as not to generate a cavity in the concrete mold. After the concrete has hardened, the chain, the steel pipe, the formwork fastener, the formwork, and the separator holder screwed to the end of the separator are sequentially removed.

  There are many types of work as described above, such as assembling and removing concrete formwork, and tools according to the work have been used. And according to the work contents, a worker of one occupation called a formwork carpenter was working using different tools.

  Conventionally, a tool disclosed in Patent Document 1 is mainly used to dispose a separator. The tool described in Patent Document 1 is formed by twisting the entire tip of a round bar material in a spiral shape about half a circle, and forming a tip part into a thin spiral part, and a gripping part provided at the rear end, It is the separator insertion tool for construction formwork which provided the 1st engaging part which can be freely fitted, and the 2nd engaging part which can be freely fitted to the main-body shaft part of a formwork fastener.

  First, the separator is prevented from rotating freely using the first engaging portion of the tool, and the separator is fixed inside the first mold. Next, the separator through-hole provided in the second mold is passed through the spiral portion of the tool so that the tip of the spiral portion is entangled with the end of the separator, and the separator end from the separator through-hole to the second mold. Guide and project outside the frame.

  Then, a mold fastener having a female screw formed therein is attached to the male screw portion provided at the protruding separator end, and the mold fastener is axially moved using the second engaging portion. Then, the separator and the formwork fastener are screwed together, and the formwork fastener is fixed to the outside of the second formwork. In this way, the work from the installation of the separator to the fixing of the formwork could be performed with only one tool. Thereby, about the installation operation | work of a separator, it carried around so that a plurality of tools might not be lost, and the effect that it became unnecessary to use properly was acquired.

  However, even with this tool, any of the work of stopping the idle rotation of the separator, the work of passing the separator through the separator through-hole, and the work of attaching and fixing the formwork fastener must be performed manually by the worker, which is high. Work efficiency was not obtained. Therefore, among these operations, the work of fixing the mold fastener that does not require the skill of the operator is performed by using a socket wrench with a cross-sectional shape adapted to the substantially rectangular cross-sectional shape of the mold fastener, It was attached to the tip shaft of the driver and fixed by its rotational driving force.

  The mounting angle of the formwork fasteners to the separator axis is different, and the ceiling formwork support frame and scaffolding are often installed outside the concrete formwork. It was necessary to twist the wrist to be held and insert the socket wrench at the tip of the electric impact driver into the mold fastener, which was one of the reasons that the burden of the mold attachment work was heavy.

  Also, when the socket wrench is not inserted deeply into the mold fastener, the socket wrench is idle or the impact driver's rotational force cannot be transmitted. There was a problem that it could not be concluded. For this reason, the worker has to change the tool and manually check the fastening state of the formwork fastener.

  Further, in order to tighten the opposite formwork using a chain, it is necessary to tighten the chain with a turnbuckle in order to loosen the chain hooked on a steel pipe or the like. In order to improve the efficiency of the operation of tightening the chain with the turnbuckle, the prior art document 2 discloses a tensioning device in which one end can be tightened with a nut and is tightened with an electric impact driver via a nut tightening adapter. Has been proposed.

  However, in the past, when the chain was tightened, an electric impact driver was not carried, so even though the work efficiency was significantly improved, some workers tighten the chain with the turnbuckle as before. There were many.

  The work of removing the mold fastener has been performed by an electric impact driver using the socket wrench. When concrete is poured into the formwork, a large pressure is generated to push the formwork outward, the gap between the facing formwork is slightly opened, and the formwork fastener is strongly tightened. Therefore, when removing the formwork, it may be difficult to remove the formwork fastener only with the rotational driving force of the electric impact driver. In that case, there was a problem that the worker had to change the tool and manually loosen the formwork fastener in advance.

Japanese Utility Model Publication No. 54-147018 Kokukai 2013-069081

  Therefore, the present invention can be applied not only to the fixing of the mold from the installation of the separator but also to various types of concrete mold work from the removal of the mold fastener, and the rotational driving force by the power can be used efficiently, It is an object of the present invention to provide a tool that can be worked only by manual work and can work efficiently according to the situation of the work place.

  A concrete formwork work tool according to a first aspect of the present invention includes a long tool composed of a desorption part, a hexagonal opening, and a body part, and a rotational driving force is applied to one end part of the body part. The detachable part to be transmitted is provided, and the other end is provided with the hexagonal opening that can be fitted to a desired hex nut, and penetrates the trunk main body in the vicinity of the end of the trunk main body. A substantially rectangular through-hole is formed, and a hollow portion continuous from the hexagonal opening is provided inside the body main body, and the cross-sectional shape of the through-hole is fitted into the through-hole. The cross-sectional shape is adapted so that the formwork fastener that forms the shape does not idle, and the cross-sectional shape of the cavity portion is adapted so that the formwork fastener that forms a substantially rectangular cross-sectional shape inserted into the cavity portion does not idle. The cross-sectional shape is such that the desorption part generates a rotational driving force. It is characterized in that it is detachable in the axial portion of the force tool.

  The length of the long tool is not limited to a length of about 20 cm to about 30 cm because it is attached to a shaft such as an electric impact driver. The cross-sectional shape of the trunk portion main body is not limited, and may be a cylindrical body surrounded by the periphery, or may be a trunk portion main body by facing two flat plates.

  The power tool that generates the rotational driving force may use electricity as a power source and may use compressed air as a power source. Further, an impact driver that generates an impact force with rotation of the shaft may be used, or an electric driver that only generates a rotational force may be used.

  The shape of the hexagonal opening is not limited as long as a desired hexagonal nut can be fitted inside and tightened. A groove may be formed at the tip of the hexagonal opening and fitted to another member.

  The formwork fastener is a shaft body having a female screw portion on one end side. The cross-sectional shape of the main body of the shaft body is a substantially rectangular shape having a long side direction of about 18 mm and a short side direction of about 8 mm, and the short side edge is gently curved. The shape of the through hole and the hollow portion is a shape that can be held so as not to idle the shaft body main body portion of the mold fastener that has a substantially rectangular cross-sectional shape, and is more than the cross-sectional shape of the shaft body main body portion of the mold fastener. The shape is not limited to a rectangular shape, and may be an oval shape or an oval shape.

  According to the first invention, the formwork fastener can be efficiently detached using the rotational driving force by power in the length direction of the long tool and intersects the length direction of the long tool. In such a direction, it can be detached with a large rotational force manually. Thereby, even if it does not replace a tool according to the state by which a formwork fastener is fastened, the tool of the present invention can be used properly and a formwork fastener can be efficiently attached or detached. In addition, a hex nut can be fitted into the hex opening to efficiently remove the tensioner. Furthermore, there is an advantageous effect that the mold fastener can be attached and detached even when the rotational driving force by the power cannot be used.

  The second invention of the present invention is the concrete mold work tool of the first invention, the distance from the center of the long side direction of the through hole to the spaced apart end of the long tool, It is more than 5 times the length of the through hole in the long side direction.

  When the length of the long tool is about 20 cm to about 30 cm, the handling is easy and preferable, but the position and diameter of the through hole may be determined within this length range. If the length in the long side direction of the through hole is about 25 mm and the distance from the center in the long side direction to the end of the through hole is about 125 mm or more, the body part can be used as a handle, 10 times the rotational force can be transmitted.

  According to the second invention, the electric screwdriver is used in a state where the tightening resistance or the loosening resistance is small, and the electric screwdriver is used in a state where the tightening or loosening resistance is large, or there is an obstacle and the electric screwdriver cannot be used. However, a large rotational force can be transmitted to the formwork fastener. Accordingly, there is an advantageous effect that the mold fastener that is not tightened or loosened by the electric screwdriver can be easily attached and detached.

  The third aspect of the present invention is the concrete formwork working tool according to the first or second aspect, wherein the bolt shaft fitted to the hexagon nut can be inserted into the hollow portion. It is characterized by having a space.

  According to the third aspect of the present invention, the body portion main body of the long tool is provided with a space having a length into which the bolt shaft continuous from the hexagonal opening can penetrate. Thus, even if the tool is not replaced, even the tension tool described in Patent Document 2 and the form fastener that is fixed by tightening the hexagon nut can be efficiently attached or removed using the rotational driving force by power. It is possible.

  A fourth aspect of the present invention is a concrete formwork working tool according to the first to third aspects of the present invention, including a separator insertion tool, wherein one end of the separator insertion tool is a tip of a round bar. The whole is spirally twisted about half a circumference, the tip part is a thin spiral part, and the other end part is detachable from the detachable part.

  According to the fourth aspect of the invention, the separator insertion tool is fixed to the attachment / detachment portion of the long tool, the portion of the long tool is gripped, and the concrete formwork working tool is used as the separator insertion tool. It is possible to guide and project outside the two formwork. Thereby, even if it does not carry the separator insertion tool for inserting a separator, it is possible to arrange | position a separator to a formwork.

  A fifth aspect of the present invention is the concrete formwork working tool according to the first to fourth aspects of the present invention, provided at the end portion of the flat portion forming the opening portion of the hexagonal opening portion at the shaft portion of the separator. It is characterized in that a groove portion having a width to be fitted to the square shaft portion is formed.

  The number of grooves is not limited. The width | variety of a groove part should just be the width fitted by the square-axis part provided in the axial part of the separator. According to the fifth aspect of the present invention, the hexagonal opening at one end of the long tool is inserted into the opposite formwork in which the reinforcing bars are arranged, and the groove formed at the end of the hexagonal opening is formed. It is possible to fasten and fix the mold fastener to the separator so that the separator is not idled by being fitted to the angular shaft portion of the separator. Thereby, it is possible to fix the separator to the mold without carrying a separate tool to stop the separator from spinning freely.

  A sixth invention of the present invention is the concrete mold work tool according to the first to fifth inventions, and is characterized in that an open hole is provided on a side of the trunk body. According to the sixth invention, an open hole is formed on the side of the trunk body, the long tool is reduced in weight, and the penetration state of the bolt penetrated into the long tool can be visually confirmed. . Thereby, it becomes easy to carry the tool, and the tension tool can be tightened while confirming the tightening state.

-According to 1st invention, even if it does not replace a tool according to the state by which a formwork fastener is fastened, the tool of this invention can be used properly and a formwork fastener can be attached or detached efficiently. In addition, a hex nut can be fitted into the hex opening to efficiently remove the tensioner. Furthermore, there is an advantageous effect that the mold fastener can be attached and detached even when the rotational driving force by the power cannot be used.
-According to 2nd invention, there exists an advantageous effect that attachment / detachment is easy also with the mold fastener of the state which cannot be tightened or loosened with an electric screwdriver.
-According to the third invention, even if the tool is not replaced, even the tension tool described in Patent Document 2 and the form fastener that is fixed by tightening the hexagonal nut, use the rotational driving force by power. It can be efficiently attached or removed.

-According to 4th invention, even if it does not carry the separator insertion tool for inserting a separator, it is possible to arrange | position a separator to a formwork.
According to the fifth aspect, this makes it possible to fix the separator to the mold without carrying a separate tool to stop the separator from spinning freely.
-According to 6th invention, it becomes easy to carry a tool and it becomes possible to tighten a tension tool, confirming a tightening state.

The perspective view of the tool 1 for concrete formwork (Example 1). Explanatory drawing of the structure of the tool 1 for concrete formwork (Example 1). Explanatory drawing of the removal | desorption operation | work of a mold fastener (Example 1). The partially cutaway side view explaining the state which fastens the formwork fastener of a different form (Example 1). A partially cutaway side view for explaining a state in which a tensioner is tightened (Example 1). Explanatory drawing of the state which stops the idle rotation of a separator (Example 1). Explanatory drawing of the operation | work which makes a separator penetrate a mold (Example 1). Explanatory drawing of a long tool (Example 2). Explanatory drawing of a long tool (Example 3).

  A through-hole was formed in the body main body of the long tool that can be axially moved by the rotational driving force by power at a position spaced a predetermined distance from the end of the long tool in a direction intersecting the axial direction. Then, grip the end of the long tool and rotate it around the center of the through-hole easily by gripping the end of the long tool so that it intersects the trunk body. I was able to do that.

  Moreover, the hexagon opening part was provided in the front-end | tip of a long tool, and the substantially rectangular cavity part continued from the hexagon opening part was provided in the trunk | drum main body inside the hexagon opening part along the axial direction. And so that the cross-sectional shape fitted in the hollow portion can be efficiently tightened using the rotational driving force by the power, or the component having a substantially rectangular member or the hexagonal nut fitted in the hexagon opening. did.

  Furthermore, a separator insertion tool is detachably attached to one end of a long tool, and one concrete mold work tool is not limited to fixing the formwork from the installation of the separator, but also removing the formwork fasteners. Applicable to many concrete formwork up to.

  In the first embodiment, a concrete formwork working tool 1 including a long tool 100 and a separator insertion tool 200 that are used by being mounted on an electric impact driver 300 having a hexagonal opening 10 at the tip is shown in FIG. This will be described with reference to FIG. FIG. 1 is a perspective view of a concrete formwork working tool 1, and FIG. 2A is a side view of the long tool 100 and the separator insertion tool 200, FIG. 2B is a plan view of the long tool, and FIG. 2C is a position A in FIG. 2A. FIG. 2D is a cross-sectional view at position B in FIG. 2A.

  FIG. 3 is a view for explaining the attachment / detachment of the mold fastener 400. FIG. 3A is a diagram for explaining a state in which the mold fastener 400 is axially moved manually, and FIG. 3B is a diagram for explaining a state in which the mold fastener 400 is axially moved by an electric impact driver. It is a part notch side view. 4 is a partially cutaway side view illustrating a state in which a form fastener 400 having a different form is tightened, FIG. 5 is a partially notched side view illustrating a state in which the tensioner 500 is tightened, and FIG. FIG. 7 is a diagram for explaining a state in which the separator 700 is inserted through the formwork.

  The long tool 100 constituting the concrete mold work tool 1 includes a hexagonal opening 10, a trunk body 20, and a detachable portion 30. The electric impact driver indicated by a broken line in FIG. 2A in the detachable portion 30. 300 (shown by broken lines in the following drawings) is attachable to and detachable from the tip shaft portion 310 (see FIGS. 1 and 2). Although the length of the long tool 100 is not limited, in Example 1, it is about 22 cm. The hexagon opening 10 has an inner diameter of about 20 mm and a depth of about 20 mm. The inward portion of the hexagonal opening is connected to the axial end of the trunk body 20, and the trunk body 20 has a length of about 17 cm. The other axial end of the trunk body is continuous with the detachable portion 30.

  The hexagon opening 10 has a size suitable for being fitted to a hexagon nut having a plane distance of about 18 mm. A groove 11 having a width of 7 mm and a depth of about 6 mm is formed in each of the facing flat portions forming the opening of the hexagonal opening 10.

  A hollow portion 21 having a substantially oval or oval cross-sectional shape is formed in the trunk body 20 along the axial direction of the trunk body 10 from the hexagon opening 10 (FIG. 2D (See the figure). The portion that continues from the hexagon opening 10 to the cavity 21 is a gently inclined surface 12, and when the mold fastener 400 inserted from the hexagon opening 10 is inserted into the cavity 21 from the hexagon opening 10. It is designed to be smoothly inserted without being caught. The cross-sectional shape of the cavity portion 21 has a length in the long side direction of about 20 mm and a width in the short side direction of about 10 mm, so that the shaft body main body 410 of the mold fastener having a substantially rectangular cross-sectional shape does not rotate freely. Any cross-sectional shape adapted to the above may be used.

  A through-hole 22 having a cross-sectional shape adapted to prevent the shaft body main body 410 of the mold fastener having a substantially rectangular cross-sectional shape from rotating in the vicinity of the hexagonal opening 10 side is provided on the side surface of the body main body 20. It has been drilled. The through hole 22 may be a hole having a long side and a short side, and the shape may be a rectangular shape, an elliptical shape, an oval shape, an oval shape, or the like. The length in the long side direction is about 25 mm, and the length in the short side direction is about 10 mm. The distance from the center of the through hole 22 in the long side direction to the end of the long tool on the detachable part side is about 17 cm, which is about 7 times the length in the long side direction. The position of the through hole and the length of the long tool may be determined so that the magnification is 5 times or more. In addition, a plurality of circular open holes 23 are drilled on the side of the trunk body 20 to reduce the weight, and the inside is visible from the side.

  Here, the mold fastener 400 fitted in the cavity 21 and the through hole 22 will be described with reference to FIGS. 2 and 3. The mold fastener 400 is a shaft body having a length of about 16 cm, and is provided with a female screw portion 420 on one end side. The cross section of the shaft body main body 410 has a long side of about 12 mm and a short side of about 8 mm. (See FIGS. 2A and 2D), and the length of the shaft body 410 is about 12 cm (FIG. 3A and FIG. 3B). (See figure).

  The shaft body main body 410 of the mold fastener is fitted into the through hole 22 (see FIG. 2A), and is held so that the substantially rectangular corner portion 430 does not rotate freely. Is manually screwed into the male screw portion at the end of the separator (FIG. 3A). Further, the shaft body main body 410 of the formwork fastener is fitted in the hollow portion 21 (see FIG. 2D), and the substantially rectangular corner portion 430 is held so as not to idle. By driving 300, the female screw portion 420 is screwed into the male screw portion at the end of the separator (see FIG. 3B).

  A hexagonal cross-section recess (not shown) is provided inside the detachable portion 30, and is screwed into the tip shaft portion 310 (see FIG. 2A) of the electric impact driver that generates a rotational driving force. It is mounted so as to be detachable by a known mounting means such as a fitting means or a tightening means for the concavo-convex portion, and the rotational driving force of the electric impact driver 300 is transmitted to the long tool 100 for axial movement.

  The axially moved long tool 100 efficiently screwes the shaft body main body 410 of the formwork fastener to the male screw at the end of the separator (see FIG. 3B). Further, a hexagon nut 441 is fitted into the hexagonal opening 10 on the other end of the mold fastener 440 of a different type that is screwed to the separator 700 so that the mold 800 is tightened through the steel pipe 720 having a circular cross-sectional shape. Then, the hexagon nut 441 is screwed by driving the electric impact driver 300 (see FIG. 4). Furthermore, the hexagonal nut 510 for tightening the tensioner 500 that tensions the chain (not shown) is similarly fitted with the hexagonal opening 10 at the front, and the hexagonal nut 510 is tightened by driving the electric impact driver 300. Then, the distance between the two hooks 520 and 530 is effectively approached, and the chain hooked on the hook is tensioned (see FIG. 5).

  Here, the use aspect as a tool for manual work of the concrete formwork tool 1 will be described. As a tool for manual work, a concrete mold for removing and attaching the mold fastener 400 (see FIG. 3 (A)), inserting the separator 700 into the mold (see FIG. 6), and rotating the separator 700 to prevent rotation. Used for frame work.

  For the detachment of the mold fastener 400, the shaft body main body 410 of the mold fastener is inserted into the through hole 22 that is penetrated through the side surface of the long tool so that the mold fastener 400 and the long tool 100 intersect. Is inserted (see FIG. 2A), the detachable portion 30 side of the long tool is gripped, and the female screw portion 420 of the formwork fastener is screwed into the male screw portion 701 of the separator (FIG. 3 ( A) See figure). In the first embodiment, the distance to the separated end of the long tool 100 is 7 times the length in the long side direction of the through hole 22, so that it is difficult to work using the electric impact driver 300. Even so, the mold fastener 400 can be easily fastened to the separator 700. Furthermore, the tightly-tightened mold fastener 400 can be easily removed from the separator 700.

  Next, an operation of inserting a separator through the mold 800 using the concrete mold work tool 1 will be described. First, the separator insertion tool 200 has one end portion that is a spiral portion 210 having a thin tip portion twisted about the entire tip of a round bar material in a spiral shape, and can be attached to the attachment / detachment portion at the other end portion. A mounting portion 220 is formed.

  The form of the mounting portion 220 is a known mounting means such as a screwing means, a concave-convex fitting means, a tightening means, etc., which can be adapted to a recess having a hexagonal cross section formed inside the detachable part 30. The separator insertion tool 200 can be attached to and detached from the long tool 100. In a state where the separator insertion tool 200 is attached to the long tool 100, the long tool 100 is used as a grip portion of the separator insertion tool 200.

  With reference to FIG. 6, FIG. 7, the operation | work which attaches a separator to the wall formwork which faces across a wall rebar is demonstrated. First, vertical and horizontal wall rebars 910 and 920 are disposed at the position where the concrete wall is formed, and a first wall formwork 930 is disposed along the wall rebars 910 and 920, and its surroundings. Is fixed. The separator 700 is inserted into the separator insertion hole 931 formed in the first wall mold 930 from the wall reinforcing bar side. And the groove part 11 formed in the hexagon opening part of the long tool is fitted in the square shaft part 710 formed in the axial center part of the inserted separator 700, and the idle rotation of the separator 700 is stopped (FIG. 6). See), the formwork fastener 401 is screwed to the outside of the first wall formwork 930.

  Next, the second wall mold 940 is built so as to face the first wall mold 930, and the separator insertion hole 941 of the second wall mold is approached to the end of the separator 700. The mold carpenter inserts the spiral portion 210 at the tip of the separator insertion tool from the separator insertion hole 941 and entangles the separator end portion 711 with the separator end portion 711 so that the separator end portion 711 has a separator insertion hole 941. To guide. From the second wall mold 940, the spiral end 210 is pulled out after the separator end 711 is aligned with the position of the separator insertion hole 941, and the second wall mold 940 is pushed inward. The separator end 711 is protruded (see FIG. 7).

  And the female screw part of a formwork fastener is attached to the male screw part of the separator end part 711 made to protrude. When there is no obstacle in front of the mold fastener, as described above, the electric impact driver 300 or the like is attached to the attachment / detachment portion 30 of the long tool from which the separator insertion tool has been removed. The shaft body main body 410 of the mold fastener fitted in the cavity portion 21 of the scale tool is efficiently axially moved, and the mold fastener 400 is screwed into the separator 700 (see FIG. 3B). ).

  When there is an obstacle in front of the mold fastener 400 and the electric impact driver 300 is difficult to use, etc., the shaft body main body of the mold fastener fitted in the through hole 22 on the side of the long tool. 410 is securely screwed by an operator by hand (see FIG. 3A). As described above, one concrete formwork work tool 1 is selectively used according to the situation of the work place, and is efficiently or reliably worked by using the rotational driving force by power. .

  In the second embodiment, in place of the barrel main body 20 of the long tool 100 of the first embodiment, three portions are penetrated so as to penetrate the barrel main body in the vicinity and the center of both ends in the axial direction of the barrel main body. The long tool 110 in which the holes 24, 25, 24 are drilled will be described with reference to FIG. FIG. 8 is a side view illustrating the long tool 110. Since the hexagonal opening 10, the detachable portion 30, and the separator insertion tool 200 are the same as those of the concrete mold work tool 1 of the first embodiment, the description thereof is omitted.

  The shape of the through-holes 24 and 25 may be a cross-sectional shape that is adapted so that the shaft body main body 410 of the formwork fastener having a substantially rectangular cross-sectional shape does not idle. The through holes 24 and 25 may be holes having a long side and a short side, and the shape may be a rectangular shape, an elliptical shape, an oval shape, an oval shape, or the like. The length of each through hole 24, 25 in the short side direction is about 10 mm, but the length in the long side direction is about 25 mm for the through hole 24 provided in the vicinity of both ends, and is provided in the center. The through-hole 25 is about 20 mm, and the shaft body main body 410 can be easily inserted into the through-holes 24 in the vicinity of both ends. The through-hole 25 provided in the central portion of the shaft body main body 410 is fitted. The play has a small length.

  Since the length in the long side direction of the central through hole 25 is only slightly larger than about 18 mm in the long side dimension of the shaft body main body of the mold fastener, the shaft body main body is formed in the central through hole. 410 can be mounted and twisted by hand to rotate the long tool 110 around the central axis of the central through hole 25. Then, the mold fastener 400 is screwed to a predetermined position of the separator by the inertial force that the long tool 110 rotates. Thereafter, the shaft body main body 410 is removed from the central through hole 25, and the shaft body main body 410 is inserted into the through holes 24 provided in the vicinity of both ends so that the formwork fastener 400 is securely tightened. You can do it.

  In Example 3, a long tool 120 in which the body part body 20 of Example 1 is changed to a body part made of a plate will be described with reference to FIG. 9 is an explanatory view of the long tool 120, FIG. 9A is a side view of the long tool 120, FIG. 9B is a cross-sectional view of position A in FIG. 9A, FIG. 9C is a cross-sectional view at position B in FIG. 9A, and FIG. 9D is a cross-sectional view at position C in FIG. 9A.

  Since the hexagonal opening 10, the detachable portion 30, and the separator insertion tool 200 are the same as those of the concrete mold work tool 1 of the first embodiment, the description thereof is omitted. The long tool 120 has a length of about 22 cm (see FIG. 9A). The trunk portion body 26 is formed of a plate body having a thickness of 2 mm, and is a rectangular tube having a substantially rectangular cross-sectional shape having an inner diameter of about 20 mm in the long side direction and an inner diameter of about 10 mm in the short side direction (FIG. 9 ( C) FIG. 9 (see FIG. 9D).

  Three through-holes 27, 28, 29 having different widths are formed in the vicinity of the end portion on the side surface of the trunk body 26 (see FIG. 9A). Each of the three through holes 27, 28, and 29 has a height of about 20 mm and a width of about 12 mm, about 17 mm, and about 22 mm. It is possible to insert a member having a different shape, such as a hexagonal shape or a substantially rectangular shape, into the through holes 27, 28, and 29 having different sizes, and rotate them manually.

  Further, a hexagon nut can be fitted into the hexagon opening 10 (FIG. 9B), and the inside of the trunk body 26 is a cavity having a height of about 20 mm, a width of about 10 mm, and a depth of about 17 cm. Therefore, for example, the shaft body main part 410 of the mold fastener is made to enter using the rotational driving force by power (see FIG. 9C), and the hexagon nut is tightened to tighten the bolt shaft 511 ( As shown in FIG. 5 (see FIG. 9D), the members can be efficiently screwed together.

(Other)
-Although the metal is suitable for the material of the tool for concrete formwork, it is not necessarily limited.
In the above description of the embodiment, the aspect of attaching the concrete formwork assembling parts has been described, but it is needless to say that it can be removed in the same manner.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The technical scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

1 ... Concrete formwork tool,
10 ... Hexagonal opening, 11 ... Groove, 12 ... Inclined surface,
DESCRIPTION OF SYMBOLS 20 ... Trunk body, 21 ... Cavity, 22 ... Through hole, 23 ... Open hole, 24, 25 ... Through hole, 26 ... Trunk body, 27, 28, 29 ... Through hole, 30 ... Desorption part, 31 ... Hollow,
100, 110, 120 ... long tool,
200 ... Separator insertion tool, 210 ... Spiral part, 220 ... Mounting part,
300 ... electric impact driver, 310 ... tip shaft,
400 ... Formwork fastener, 401 ... Formwork fastener, 410 ... Shaft body main body, 420 ... Female screw part, 430 ... Corner part, 441 ... Hexagon nut,
500 ... tensioning device, 510 ... hexagon nut, 511 ... bolt shaft, 520, 530 ... hook,
700 ... Separator, 701 ... Male screw part, 710 ... Square shaft part, 711 ... Separator end part, 720 ... Steel pipe, 800 ... Formwork,
910, 920 ... wall rebar, 930 ... first wall formwork, 931 ... separator insertion hole, 940 ... second wall formwork, 941 ... separator insertion hole

Claims (6)

A concrete formwork tool,
Including a long tool consisting of a desorption part, a hexagonal opening, and a body part,
One end portion of the body main body is provided with the detachable portion for transmitting rotational driving force by power, and the other end portion is provided with the hexagonal opening portion that can be fitted to a desired hexagonal nut. And
A substantially rectangular through-hole penetrating the trunk main body is formed in the vicinity of the end of the trunk main body, and a hollow portion continuous from the hexagonal opening is provided inside the trunk main body.
The cross-sectional shape of the through-hole is a cross-sectional shape that is adapted so that the formwork fastener having a substantially rectangular cross-sectional shape fitted to the through-hole does not idle,
The cross-sectional shape of the hollow portion is a cross-sectional shape that is adapted so as not to idle the mold fastener that forms a substantially rectangular cross-sectional shape inserted into the hollow portion,
The detachable part is detachable from the shaft part of the power tool that generates the rotational driving force in the previous period.
A concrete formwork tool characterized by that. The distance from the center in the long side direction of the through hole to the spaced apart end of the long tool is not less than 5 times the length in the long side direction of the through hole.
The concrete form work tool according to claim 1, wherein: In the hollow portion, there is a space of a length that allows the bolt shaft fitted to the hexagon nut to penetrate.
The concrete form work tool according to claim 1 or 2, wherein Including separator insertion tool,
In the separator insertion tool, one end portion is formed by spirally twisting the entire tip end portion of the round bar material in a spiral manner, the tip portion is formed as a thin spiral portion, and the other end portion is detachable from the detachable portion. ,
The concrete form work tool according to any one of claims 1 to 3, wherein the concrete form work tool is provided. A groove portion having a width to be fitted to a square shaft portion provided in the shaft portion of the separator is formed at an end portion of the flat surface portion forming the opening portion of the hexagonal opening portion.
The concrete form work tool according to any one of claims 1 to 4, wherein the concrete form work tool is provided. An opening hole is provided on the side of the trunk body,
The concrete mold work tool according to any one of claims 1 to 5, wherein

Images