JP2005030156A - Connection metal fitting for metal concrete mold in vertical and lateral direction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in a conventional connection metal fitting wherein, when a plurality of standardized metal concrete molds for a wall are linked to each other in parallel with each other or in a vertical row to form a concrete mold with a specified width in the same plane, though they are joined to each other through vertical ribs and lateral ribs at the peripheral edges of the concrete mold, work efficiency becomes worse if bolts and nuts are used, and also though a structure adding a tightening force by disposing a separator at the position of a fixing member across joints, the linked concrete molds cannot be moved. <P>SOLUTION: A groove body 4 arranged continuously with a pair of arms 43 and 43 is put on a square cylindrical body 3 arranged continuously with a pair of arms 33 and 33 so that the groove body 4 and the square cylindrical body 3 can be slid each other and the arms 33 and 43 can be moved close to and apart from each other. A waveform diagonally projected line 31a is formed on the wedge receiving surface 31 of the square cylindrical body 3, window holes 42a and 42a are formed in the side plates 42 of the groove body 4, and a wedge body 5 in which a plurality of curved projected lines 52a are formed on the surface thereof opposed to the waveforme diagonal projected line 31a is inserted through the window holes 42a and 42a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a plurality of metal concrete molds that are used to construct a wall surface of a concrete structure in a reinforced concrete, a housing such as an office building, a condominium, and a store related to a reinforced steel concrete structure. Or it is related with the connection metal fitting for connecting up and down. That is, the present invention relates to a connection fitting used when a plurality of metal concrete molds are connected to form a large-sized concrete mold for walls.

Conventionally, in reinforced concrete structures, a metal concrete formwork that can be repeatedly used to form a wall surface is often used.
In order to construct a wall concrete formwork, a plurality of metal concrete formwork are connected in parallel or as a column, and a concrete formwork for a wall having a desired width on the same plane is constructed.
For this purpose, it is necessary to connect a plurality of concrete molds of a standardized size in a single plane.
As a means for that purpose, through holes are drilled in the vertical and lateral ribs on one side of the concrete formwork, and bolts are passed through the through holes in the adjacent concrete formwork and tightened with nuts, or presented in Patent Document 1. In addition, there are those that are connected by a U-shaped metal fitting that sandwiches the end portion and a pin-shaped metal fitting that is supported by a mold.
Furthermore, Patent Document 2 proposes a structure in which a separator is arranged at a position of a fixing member straddling a joint and a tightening force is applied with respect to a longitudinal connection structure of a form panel.

JP-A-5-52038 JP-A-5-263524 (FIG. 7)

However, these conventional examples have the following problems.
Connecting with bolts and nuts is not an appropriate means in the current formwork construction of reinforced concrete structures, which are poor in workability and maximize work efficiency.
In addition, since the means presented in Patent Document 1 is clamped with a U-shaped metal fitting, it cannot be said to be a robust connecting means because it is clamped from the outside with a pin.
In the method of Patent Document 2, since the separator is integrated with the separator, the connected concrete formwork cannot be moved as it is to form the upper floor wall. It had to be disassembled and disassembled into formwork.

In the present invention, the concrete formwork for constituting the wall surface of the conventional concrete structure described above is connected to the upper and lower sides and the right and left in the same plane, and the concrete formwork is made large by connecting after concrete placement and curing. It is peeled off from the concrete wall surface and lifted as it is with a crane or the like, so that it can be used as a large concrete formwork for the upper floor.
According to the first aspect of the present invention, the gist of the connecting metal fittings on the same plane of the metal concrete molds is a groove body in which a pair of arms are connected to a rectangular tube body in which a pair of arms are connected. It is configured so that each arm can be contacted and separated by sliding on each other, and a corrugated inclined ridge that is substantially orthogonal to the longitudinal direction is formed on the surface facing the bottom surface of the groove of the rectangular tube, Both side plates of the body are configured to have window holes, and on the surface facing the corrugated inclined ridges, wedge bodies formed with a plurality of curved ridges opposite to the inclined ridges are inserted from the window holes. The connecting metal fitting is configured so that the rectangular tube is applied to the vertical rib or the horizontal rib of the adjacent metal concrete formwork, and the arm ends of the square tube body and the groove are joined to each other. Proximity to or contact with the groove formed in the base of the vertical or horizontal rib And slide so that, driving the wedge member, characterized in that as connecting by meshed inclined ridges of the curved protrusion and the square tubular body of the wedge.

  The gist of the invention of claim 2 is to form a guide rail so as to project the wedge receiving surface of the rectangular tube body and the ridge line of the side plate following this wedge receiving surface to the outside, and to form stoppers at both ends of the side plate, On the open edge of the side plate of the groove body, two inward projections parallel to each other are formed so as to be pushed out by a punch, and formed so as not to come off in contact with the guide rail of the rectangular tube body. It is a rod body having a flat head larger than the hole, and the leg portion at the tip is inserted into the window hole and then left and right are expanded by a press so as not to be detached from the window hole.

According to the connecting metal fitting having the structure described in claim 1, a hammer is sufficient to connect the metal concrete molds to each other, so that the workability is extremely excellent.
That is, after sliding the end of the arm of the rectangular tube body and the groove body so as to be close to or in contact with the concave groove formed in the base of each vertical rib or horizontal rib of the metal concrete form to be joined, the wedge body Can be connected by meshing the curved protrusions of the wedge body and the inclined protrusions of the rectangular tube body, so that the metal concrete formwork can be connected by an extremely simple operation. Moreover, when removing, it is enough if it hits the wedge body in the opposite direction.

  According to the connecting metal fitting having the configuration according to claim 2, the rectangular tube body and the groove body are not detached integrally, and the wedge body is also integrated, so that the work can be efficiently performed without being separated in handling. In addition, parts management becomes unnecessary.

The present invention will be described below with reference to the embodiments shown in the drawings.
As shown in FIGS. 5 and 6, the metal concrete molds 1, 1 which are arranged in parallel mainly in the lateral direction in order to form the concrete wall surface are made of a thin steel plate with a rectangular face plate 11. A vertical rib 12 and a horizontal rib 13 made of a metal square pipe, a middle rib 14 and an auxiliary rib 15 are provided and reinforced. The vertical ribs 12 and the horizontal ribs 13 are arranged on the peripheral edge of the face plate 11, and the vertical ribs 12 and the horizontal ribs 13 are formed with concave grooves 16 (the concave grooves 16 of the horizontal ribs 13 are not shown) in the inner base portions thereof. It is.
A plurality of such metal concrete molds 1 are arranged on the same plane, and the connecting metal fitting 2 connects the adjacent vertical ribs 12 or horizontal ribs 13 to each other by holding the concave grooves 16 in the vertical and horizontal directions.
The connecting fitting 2 is roughly connected to a wedge receiving surface 31 having a corrugated inclined ridge 31a inclined substantially orthogonal to the longitudinal direction on one outer surface, and side plates 32 and 32 adjacent to the wedge receiving surface 31 from the end. The side wall 42 and 42 of both the groove body 4 and the groove body 4 which integrally provided the square cylinder body 3 which provided the arm 33, and the curved arm 43 which covered and curved on the inclined protrusion 31a of the waveform of this square tube body 3 integrally. The wedge body 5 is formed integrally with the curved ridges 51, which are inserted through the window holes 42 a, 42 a formed in the above-mentioned shape, and have the curved ridges 51 opposite to the corrugated inclined ridges 31 a of the rectangular tube body 3.

Hereinafter, each component is demonstrated about the detail of this connection metal fitting 2. FIG.
The rectangular tube 3 has a wedge receiving surface 31 formed with a corrugated inclined ridge 31a substantially orthogonal to the longitudinal direction on the front surface, and arms 33 on the outer surface ends of both side plates 32, 32 following the wedge receiving surface 31. 33 is welded. The arms 33, 33 are reinforced by providing beads 33 a, and the tips of the arms 33, 33 are configured to enter perpendicularly into the grooves 16 in the inner base portions of the longitudinal ribs 12 and the lateral ribs 13.
The rear plate 34 opposite to the wedge receiving surface 31 is brought into contact with the vertical ribs 12 and 12 of the adjacent metal concrete molds 1 and 1.
A guide rail 35 is formed so that the ridge line of the wedge receiving surface 31 and the side plate 32 protrudes outward, and stoppers 36 are formed at both ends of the side plates 32 and 32 so as to bulge outwardly in a drum bridge shape with cuts parallel to the edges. It is formed. The guide rail 35 and the stopper 36 prevent the groove body 4 from coming off.

In order to manufacture this rectangular tube body 3, a corrugated inclined ridge 31a is formed by pressing at the center of a rectangular steel plate, followed by press bending, and the summing portion (the center in the longitudinal direction of the rear plate) is formed. In this case, the guide rail 35 is formed by bending (superimposing) the ridge line portion that continues to the surface including the inclined protrusion 31a so as to project outward. The stoppers 36, 36 provided on the side plates 32, 32 are formed by first pressing the stopper 36 on one side. Then, the arms 33 and 33 on which the beads 33 a are formed in advance are welded to the side plates 32 and 32.
The other side of the stopper 36 is formed by assembling the groove body 4 and then inflating it by press working so that the groove body 4 does not come off.

The groove body 4 is obtained by press-bending a steel plate into a groove shape. The groove body 4 includes a bottom plate 41 and side plates 42, 42 that straddle the corrugated inclined ridge 31 a of the rectangular tube 3 and is curved from the side plates 42, 42. The arms 43 and 43 to be connected are integrally connected.
The side plates 42 and 42 are provided with window holes 42a and 42a so that the wedge body 5 can be inserted, and two inward projections 42b and 42b parallel to the open end edges of the side plates 42 and 42 are pushed out by punches. The rectangular reinforcing plate 44 is welded to the side plates 42 and 42 and the bottom plate 41 so as to maintain the strength. Further, a bead 41 a that is recessed inward is provided at the center in the longitudinal direction of the bottom plate 41 so as to be adjacent to the reinforcing plate 44.
The window holes 42a, 42a are rectangular in basic shape, and are formed in hexagons with the corners on the bottom plate 41 side inward in order to save the material of the wedge body 5.
The arm 43 is reinforced by beads 43a and 43a bulging outward along the outer peripheral edge thereof.
The round holes 41b and 41b drilled on the left and right of the bead 41a of the bottom plate 41 are fastened to a hole drilled in a metal concrete mold 1 (not shown) through a string or a chain or a vertical and horizontal butter material passed to the outside of the metal concrete mold 1 This is for the purpose of preventing the connecting metal fitting 2 from falling.

The wedge body 5 is inserted from the window holes 42a and 42a of the groove body 4, and draws both the rectangular tube body 3 and the groove body 4 by striking to connect the concrete molds 1 and 1. .
The wedge body 5 is formed of malleable cast iron and is a rod body 52 having a flat head 51 larger than the window hole 42a, and the leg 53 at the tip is inserted into the window hole 42a and then pressed. The left and right sides are widened so as not to be detached from the window hole 42a.
On the surface of the rod body 52 facing the corrugated inclined ridge 31 a of the rectangular tube 2, the inclined surfaces close to the curved ridges 52 a and the legs 53 in the illustrated example opposite to the inclined ridges 31 a. A recess 52b is formed continuously as a relief of the protrusion 31a.
The concave and convex portions of the inclined ridge 31a of the rectangular tube body 3 and the curved ridge 52a of the wedge body 5 are fitted to draw the rectangular tube body 3 and the groove body 4 and connect the adjacent concrete molds 1 and 1 together. .
When the recess 52b faces the inclined protrusion 31a, the rectangular tube 3 and the groove 4 are slidable in the left-right direction.

In order to use the connecting metal fitting 2 having such a configuration, the metal concrete molds 1 and 1 to be connected are arranged side by side and the vertical ribs 12 and 12 are butted, and the rear plate of the rectangular tube 3 is connected to the vertical ribs 12 and 12. In order to maintain stability, the side plate 32 is placed on the auxiliary ribs 15 and 15 (FIG. 5), or although not shown, the rear plate 34 of the rectangular tube 3 is also attached to the auxiliary ribs 15 and 15 to -The auxiliary ribs 15 and 15 are sandwiched by the rods 33, 33, 43 and 43 so as to prevent the fall.
The concave portion 52b of the wedge body 5 is made to face the inclined protrusion 31a of the rectangular tube body 3, and then the tip of the arms 33 and 43 of the rectangular tube body 3 and the groove body 4 are brought close to each other.
After approaching to some extent, the head 51 of the wedge body 5 is struck with a hammer or the like so that the curved protrusion 52a of the wedge body 5 is fitted to the inclined protrusion 31a of the rectangular tube body 3, thereby The distal ends of the arm 33 and the arm 43 of the groove body 4 are drawn together to connect the metal concrete molds 1 and 1 (FIG. 6). Although this connection metal fitting 2 is based also on the magnitude | size of the metal concrete formwork 1, it is preferable to select and attach three places and the place of the auxiliary rib 15 to the vertical direction.

  Although not shown, when a high wall surface is formed, the metal concrete molds 1 and 1 are connected in the vertical direction. In this case, the horizontal ribs 13 and 13 are held and held. In this case, the rear plate 34 of the rectangular tube 3 is placed along the middle ribs 14 and 14 and is arranged at a position where it does not move in the lateral direction even if it is hit with a hammer.

After constructing a concrete wall on the first floor of a building or the like with a large concrete formwork composed of a plurality of metal concrete forms 1 and 1 connected vertically and horizontally in this way, it remains as a large concrete formwork. It can be lifted with a crane and used for the second floor.
In order to disassemble the large concrete formwork into the respective metal concrete formwork 1 after the construction of the outer wall of the building is completed, the connecting metal fitting 2 is removed. By striking and sliding the rectangular tube 3 and the groove 4 apart, the tips of the arms 33 and 43 come out of the concave groove 16 of the concrete mold 1 so that the connecting fitting 2 can be easily removed. .
When the connection fitting 2 is used at a position close to the floor surface, it can be removed by tapping the head 51 of the wedge body 5 in the reverse direction.

It is a disassembled perspective view of the connection metal fitting which concerns on this invention. It is a perspective view of the assembly | attachment state of the connection metal fitting which concerns on this invention. It is a rear view of the assembly | attachment state of the connection metal fitting which concerns on this invention. It is the schematic which shows the fitting state of the inclined protrusion of the wedge receiving surface of a square cylinder, and a wedge body. It is a perspective view of the state before the fastening of the connection metal fitting concerning this invention. It is a perspective view of the fastening state of the connection metal fitting concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Metal concrete formwork 2 Connecting metal fittings 3 Square cylinder 31 Wedge receiving surface 31a Inclined protrusion 4 Groove body 5 Wedge body 52a Curved protrusion

Claims (2)

A rectangular tube having a pair of arms connected to each other is covered with a groove having a pair of arms connected to each other, and each of the arms can be slid to make contact and separation. The wedge receiving surface facing the ridge is formed with a corrugated inclined ridge substantially perpendicular to the longitudinal direction, and both side plates of the groove body are configured to have window holes, and the surface facing the corrugated inclined ridge is A connecting fitting in which a wedge body formed with a plurality of curved ridges opposite to the inclined ridge is inserted from a window hole, and a vertical rib or a horizontal rib of an adjacent metal concrete formwork At the same time, slide the end of the arm of the rectangular tube body and the groove body so as to come close to or abut against the concave groove formed in the base of each vertical rib or horizontal rib of the metal concrete form to be joined. Driving the body, the curved ridge of the wedge and the inclined ridge of the square tube bite Connecting fitting in the same plane of the metal concrete form with each other, characterized in that as connecting with Ukoto. A guide rail is formed by projecting the wedge receiving surface of the rectangular tube body and the ridge line of the side plate following the wedge receiving surface, and stoppers are formed at both ends of the side plate, and the open end edge of the side plate of the groove body is formed. Is formed so that two parallel inward projections are pushed out by a punch, so that it does not come off in contact with the guide rail of the rectangular tube body, the wedge body has a flat head larger than the window hole 2. The metal concrete molds according to claim 1, wherein the leg part of the tip is inserted into the window hole and then left and right are expanded by a press so as not to come off the window hole. Connecting metal fittings up, down, left and right.

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