JP3216157U - Concrete press fitting jig - Google Patents

Abstract

A concrete press-fitting jig capable of preventing destruction (collapse) of wooden and steel concrete molds is provided. A concrete press-fitting jig includes a panel portion that closes a concrete press-fit opening along the inner surface of the concrete mold, and a shutter that opens and closes the concrete press-opening opening formed in the panel portion on the inner surface side of the concrete mold. The concrete press-in part includes a connecting pipe 51 for connecting the concrete press-in opening to the concrete press-in pipe, and measures the concrete side pressure at the time of concrete press-in on the side of the connecting pipe 51. A flash diaphragm type pressure gauge 8 is provided, and the shutter has a flat surface portion that allows the concrete press-fitting opening and the connection pipe 51 to communicate with each other by rotating in a direction away from the concrete press-fitting opening about the rotation axis. [Selection] Figure 18

Description

  The present invention relates to a concrete press-fitting jig.

Conventionally, a technique described in Patent Document 1 is publicly known as a concrete press-fitting jig and a shut-off device for press-concrete at a casting opening of a steel mold.
As shown in FIGS. 19 and 20, the conventional apparatus for shutting off the pressure-feeding concrete at the casting port of the steel mold is provided between the casting port 101 and the concrete blowing port (concrete pressing tube) 102 in the concrete pressing jig. Is provided with a blocking device (chain cover surface plate 104, chain cover side plates 105, 105, chain cover bottom plate 106) that rotates about the rotation shaft 103, and is driven by rotating the blocking device after concrete press-fitting. The gap between the mouth 101 and the concrete blowing inlet 102 is blocked.

Shoko 62-44038

However, since the pressure-blocking concrete blocking device in the conventional steel formwork placement port is used in a steel concrete formwork, the problem described below particularly when used in a wooden concrete formwork There was a point.
That is, in general concrete placement, a pressure-feeding steel pipe into which concrete is poured from a concrete pump truck is connected, and a flexible hose is connected thereto, and the concrete is poured. However, if the side pressure at the time of press-fitting is measured by the conventional technology, there is a technology to provide a pressure gauge in the pumped steel pipe, but the concrete internal side pressure against the concrete formwork is measured in order to flow concrete from there through a flexible hose. There was a problem that I could not.
In addition, when placing a concrete wall or pillar with a high height in a concrete formwork, the concrete is first press-fitted from a concrete press-fitting jig attached to a lower position of the formwork. Then, there is a possibility that the internal pressure exceeds the lateral pressure strength of the concrete mold and may be destroyed (collapsed). When the concrete is pressed to the specified height, the shut-off device is turned to stop the pressing of the concrete. Next, concrete is press-fitted from a concrete press-fitting jig attached to a high position of the formwork.
However, first, there is a problem that the level of concrete press-fitting from a concrete press-fitting jig at a low position depends on the experience and intuition of construction managers and workers.

  The problem to be solved by the present invention is that the pressure inside the concrete press-fitted into the concrete formwork made of wood and steel can be reduced without relying on the experience and intuition of construction managers and workers. An object of the present invention is to provide a concrete press-fitting jig capable of accurately knowing the lateral pressure coefficient for each mounting position and thereby preventing the destruction (collapse) of the concrete formwork.

In order to solve the above-mentioned problems, the concrete press-fitting jig according to claim 1 is configured such that a concrete press-fitting jig is connected to a concrete press-fitting opening provided in a concrete mold, and the concrete press-fitting pipe connected to the concrete press-fitting jig A concrete press-fitting jig for press-fitting concrete into a mold,
The opening edge of the concrete press-fit opening of the concrete mold is provided with a mold-frame-side connecting flange that protrudes outside the concrete mold,
The concrete press-fitting jig includes a panel portion that closes the concrete press-fit opening portion on the inner surface of the concrete mold and a shutter that opens and closes the concrete press-fit opening portion opened in the panel portion on the inner surface side of the concrete mold. A concrete press-in part,
The outer peripheral edge of the panel part is detachably connected to the formwork side connection flange with a bolt in the case of a wooden concrete formwork or with a bolt or a dedicated connection pin in the case of a metal concrete formwork. With the panel side connecting flange part to attach the panel part to the concrete press-fit opening by
The concrete press-fit portion includes a connection pipe that connects the concrete press-fit opening to a concrete press-fit pipe,
A flush diaphragm type pressure gauge for measuring the concrete side pressure at the time of concrete press-fitting on the side of the connecting pipe,
The shutter rotates in the direction of the concrete press-in opening around the rotation axis, thereby closing the concrete press-in opening in the same plane along the inner surface of the concrete mold and in a direction away from the concrete press-in opening. It has a flat part that allows the concrete press-fitting opening and the connecting pipe to communicate with each other by rotating,
When pressing the concrete into the concrete formwork, the flat part of the shutter is rotated in a direction away from the press-fitting opening and the concrete is press-fitted into the concrete formwork from the concrete press-in pipe. The section is rotated in a direction to close the concrete press-fitting opening.

The concrete press-fitting jig according to claim 2 is the concrete press-fitting jig according to claim 1,
The shutter is provided with an opening / closing drive device that rotates the shutter from a state where the concrete press-fitting opening is opened to a closed state around the rotation axis.

The concrete press-fitting jig according to claim 3 is the concrete press-fitting jig according to claim 2,
The opening / closing drive device is composed of a male threaded rod having a rotation shaft portion rotatably supported by a bearing base portion which is rotatably provided in the concrete press-fitting portion at the base end portion.
The tip of the male screw rod is screwed into the female screw hole of the pressing portion provided to be freely rotatable in the front-rear direction to the tip of the curved portion that extends in an arc from the tip edge of the flat portion of the shutter about the turning shaft. And
The rotating shaft portion is provided with a nut portion for mounting a rotating tool such as a ratchet wrench.

Moreover, the concrete press-fitting jig according to claim 4 is the concrete press-fitting jig according to any one of claims 1 to 3,
A fixing means for fixing the shutter in a state where at least the concrete press-fitting opening is closed is provided.

In the present invention, as described above, the connection pipe connecting the concrete press-fit opening to the concrete press-fit pipe is equipped with the flash diaphragm type pressure gauge for measuring the concrete side pressure at the time of the concrete press-fit, thereby providing a concrete type made of wood and steel. The internal pressure of the concrete pressed into the frame can be accurately known for each mounting position of the concrete pressing jig without relying on the experience and intuition of construction managers and workers. And the effect that destruction (collapse) of the steel concrete formwork can be prevented is obtained.
Also, as the shutter opening / closing drive operation, the concrete press-in opening is pushed up from the concrete press-in direction to block the concrete press-in opening, thereby increasing the load of the concrete pressure, thereby reducing the number of concrete press-fitting jigs arranged. This makes it possible to reduce the time and labor of attaching and detaching the concrete pressure feeding pipe when placing concrete.
In addition, when the shutter is closed, the concrete press-in opening is closed on the same plane along the inner surface of the concrete mold, so if the concrete mold and concrete press-in jig are removed after the concrete is hardened, the concrete The surface can be finished without causing dents and protrusions on the surface, and the dent and protrusion repair process can be omitted.

  Further, the shutter is provided with an opening / closing drive device for rotating the shutter from the opened state to the closed state with the concrete press-fitting opening about the rotating shaft, so that the shutter can be easily rotated. Will be able to.

  Further, the opening / closing drive device is constituted by a male screw rod provided with a rotating shaft portion pivotally supported by a bearing base portion provided at the base end portion so as to be rotatable in the front-rear direction at the concrete press-fit portion, The tip of the male screw rod is screwed into the female screw hole of the pressing portion provided to be rotatable in the front-rear direction to the tip of the curved surface extending in an arc shape from the edge of the flat portion of the shutter to the center of the rotation axis. The rotary shaft portion is provided with a nut portion for mounting a rotating tool such as a ratchet wrench, so that the rotating tool such as a ratchet wrench can be mounted on the nut portion to rotate the shutter with a small force. become able to.

  Further, by providing a fixing means for fixing the shutter in a state in which at least the concrete press-fit opening is closed, it is possible to reliably prevent the shutter from rotating in the opening direction by the weight of the concrete filled in the concrete mold. Will be able to.

It is a front view at the time of shutter closing which shows the concrete press-fitting jig of Example 1. It is a front view at the time of shutter opening which shows the concrete press-fitting jig of Example 1. FIG. It is a rear view at the time of shutter closing which shows the concrete press-fitting jig of Example 1. It is a rear view at the time of shutter opening which shows the concrete press-fitting jig of Example 1. It is a right view at the time of shutter closing which shows the concrete press-fit jig of Example 1. It is a right view at the time of shutter opening which shows the concrete press-fit jig | tool of Example 1. FIG. It is a top view at the time of shutter closing which shows the concrete press-fit jig of Example 1. FIG. It is a top view at the time of shutter opening which shows the concrete press-fit jig | tool of Example 1. FIG. It is a perspective view at the time of shutter closing which shows the concrete press-fitting jig of Example 1. It is a perspective view at the time of shutter closing which shows the concrete press-fitting jig of Example 1. It is a vertical side view at the time of shutter closing in the AA line of FIG. FIG. 3 is a longitudinal side view when the shutter is opened along the line BB in FIG. 2. It is a perspective view which shows a shutter. It is a perspective view which shows the concrete press-fit opening part of a wooden concrete formwork. It is a perspective view which shows the concrete press-fit opening part of a steel concrete formwork. It is a perspective view which shows the attachment state to the wooden concrete formwork of the concrete press-fitting jig of Example 1. FIG. It is a perspective view which shows the attachment state to the metal concrete formwork of the concrete press-fitting jig of Example 1. FIG. It is sectional drawing which shows the detail of the attaching part of a flash diaphragm type pressure gauge. It is sectional drawing which shows the time of open | release of the interruption | blocking apparatus which shows the concrete press-fit jig | tool of a prior art example. It is sectional drawing which shows the time of interruption | blocking of the interruption | blocking apparatus which shows the concrete press-fit jig | tool of a prior art example.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, the concrete press-fitting jig of Example 1 will be described with reference to the drawings.

  As shown in FIGS. 1 to 18, the concrete press-fitting jig of Example 1 was connected to the concrete press-fitting opening 11 opened in the concrete mold 1 and connected to the concrete press-fitting jig. A concrete press-fitting jig for press-fitting concrete into a concrete mold 1 from a concrete press-fit pipe 2, as shown in FIGS. 14 and 15, a concrete mold is provided at the opening edge of the concrete press-fit opening 11 of the concrete mold 1. A formwork side connecting flange portion 12 that protrudes to the outside of the frame 1 is provided.

As shown in FIG. 11, the concrete press-fitting jig includes a panel portion 3 that closes the concrete press-fit opening 11 on the inner surface 1 a of the concrete mold 1, and a concrete press-fit portion 5. A connecting pipe part 51 for connecting the concrete press-fitting pipe 2 is provided.
Further, the concrete press-fitting part 5 is provided with a shutter 4 for opening and closing a concrete press-fitting opening 31 opened in the panel part 3 in the same plane as the inner surface 1 a of the concrete mold 1.

As shown in FIG. 16, in the case of a wooden concrete form, the outer peripheral edge of the panel 3 is a bolt / nut 61 as shown in FIG. The panel side connection flange part 32 which attaches the panel part 3 to the concrete press-fit opening part 11 by detachably connecting and fixing with the volt | bolt nut 61 or the connection pin 62 is provided.
Further, as shown in FIGS. 11, 12, 14, and 15, insertion holes 32 a and 12 a for inserting bolts, connection pins, and the like are provided in the panel side connection flange portion 32 and the formwork side connection flange portion 12. ing.
As shown in FIG. 17, the connecting pin 62 includes a pin 62a that is inserted into the insertion holes 32a and 12a and a wedge 62b that fixes the pin 62a.

  The concrete press-fitting part 5 is provided with a connecting pipe 51 for connecting the concrete press-fitting opening 11 to the concrete press-fitting pipe 7.

  As shown in FIG. 18, a flash diaphragm type pressure gauge 8 for measuring the concrete side pressure at the time of concrete press-fitting is screwed into the screw hole 52a formed in the side surface of the connecting pipe 51. In the first embodiment, a nut 52 is welded and fixed to the outside of a through hole 51 a formed on the side surface of the connection pipe 51, and the flash diaphragm type pressure gauge 8 is screwed and fixed to the screw hole 52 a of the nut 52.

As shown in FIGS. 11, 12, and 13, the shutter 4 is rotated in the direction of the concrete press-fit opening 11 around the rotation shaft 41, thereby bringing the concrete press-fit opening 11 along the inner surface of the concrete mold 1. In addition, the flat portion 42 is closed on the same plane, and rotates in a direction away from the concrete press-fit opening 11 so that the concrete press-fit opening 11 and the connection pipe 51 communicate with each other.
Further, the shutter 4 is provided with an opening / closing drive device 7 for rotating the shutter 4 from the open state to the closed state with the concrete press-fitting opening 11 around the rotation shaft 41.
The opening / closing drive device 7 includes a male screw rod 73 having a rotating shaft portion 72 that is pivotally supported by a bearing base portion 71 that is provided at the base end portion so as to be rotatable in the front-rear direction. The female screw of the pressing portion 74 is provided so that the front end of the male screw rod 73 can be rotated in the front-rear direction at the front end of the curved surface portion 43 extending in an arc from the front end edge of the flat portion 42 of the shutter 4 about the rotation shaft 41. It is screwed into the screw hole 75, and the rotary shaft portion 13b is provided with a nut portion 76 for mounting a rotary tool such as a ratchet wrench. In the figure, reference numeral 44 denotes a reinforcing rib.

Further, the opening / closing drive device 7 is provided with a fixing means for fixing the shutter 4 in a state where at least the concrete press-fitting opening 11 is closed.
Although not shown in the drawings, the fixing means may be constituted by a fixing screw that is screwed to the bearing base 71 and presses and fixes the rotating shaft 72 from the upper surface at the tip.

Next, the operation of the first embodiment will be described.
Since the first embodiment is configured as described above, when the concrete is pressed into the concrete mold 1, the flat portion 42 of the shutter 4 is separated from the press-fit opening 11 as shown in FIG. 12. In a state where the shutter 4 is rotated, concrete is press-fitted into the concrete mold 1 from the concrete press-fitting pipe 2 connected to the connecting pipe part 21, and when the concrete press-fitting is completed, as shown in FIG. The shutter 4 is rotated in a direction in which 42 closes the concrete press-fit opening 11.
The opening / closing operation of the shutter 4 is performed by the opening / closing driving device 7, and the concrete press-fitting opening 11 is closed by attaching a rotary tool such as a ratchet wrench to the nut 76 and rotating the male screw rod 73. The shutter 4 is pressed and rotated in the direction. That is, as the opening / closing driving operation of the shutter 4, the concrete press-fitting opening 11 is blocked by pushing it up from the direction of the concrete press-fitting pipe 2.
Thereby, the concrete press-fitting opening 11 can be closed in the same plane as the inner surface 1 a of the concrete mold 1 by the flat portion 42 of the shutter 4.

  In addition, when placing concrete walls and pillars with high height using concrete molds made of wood and steel, first, concrete is pressed in from a concrete press-fitting jig attached at a low position of the mold, but the flash diaphragm pressure After the concrete pressure in the concrete mold 1 measured by the total 8 reaches the lateral pressure strength of the wooden and steel concrete molds, the concrete pressing is stopped and the shutter 4 of the concrete pressing jig is closed. The concrete is press-fitted from a concrete press-fitting jig installed at a high position on the formwork.

  Next, the effect of the first embodiment will be described.

In the concrete press-fitting jig according to the first embodiment, as described above, the flash diaphragm type pressure gauge 8 that measures the concrete-side pressure at the time of concrete press-fitting is connected to the connection pipe 51 that connects the concrete press-fit opening 31 to the concrete press-fit pipe 2. By providing the internal pressure of the concrete pressed into the concrete formwork made of wood and steel, the side pressure coefficient for each mounting position of the concrete press-fitting jig without relying on the experience and intuition of construction managers and workers Thus, it is possible to obtain the effect of preventing the destruction (collapse) of the wooden and steel concrete formwork.
Further, as the opening / closing drive operation of the shutter 4, the concrete press-fitting opening 11 is pushed up from the direction of the concrete press-fitting pipe 2 to block the concrete press-fitting opening 11, thereby pressing the concrete pressure load, thereby arranging the concrete press-fitting jig. The quantity can be reduced, and the time and labor of attaching / detaching the concrete pumping pipe 2 at the time of placing concrete can be reduced.
Moreover, in the state which closed the shutter 4, since the concrete press-fit opening part 11 will be in the state closed on the same plane along the inner surface 1a of the concrete formwork 1, the concrete formwork 1 and the concrete press-fit jig will be attached after concrete hardening. When removed, the surface of the concrete can be finished without causing dents and protrusions, thereby providing an effect that the dent and protrusion repairing process can be omitted.

  Further, the shutter 4 is provided with an opening / closing drive device 7 for rotating the shutter 4 from the opened state to the closed state about the rotating shaft 41 from the opened state, thereby rotating the shutter 4. The operation can be performed easily.

  Further, the opening / closing drive device 7 includes a male screw rod 73 having a rotating shaft portion 72 rotatably supported by a bearing base portion 71 provided at the base end portion so as to be rotatable in the front-rear direction in the concrete press-fitting portion 5. The female screw of the pressing portion 74 is provided so that the front end of the male screw rod 73 can be rotated in the front-rear direction at the front end of the curved surface portion 43 extending in an arc from the front end edge of the flat portion 42 of the shutter 4 about the rotation shaft 41. The nut 78 is screwed into the screw hole 75 and the rotary shaft 72 is provided with a nut 76 for mounting a rotary tool such as a ratchet wrench. The shutter 4 can be rotated with a small force.

  Further, by providing a fixing means for fixing the shutter 4 in a state where at least the concrete press-fitting opening 11 is closed, the shutter 4 is rotated in the opening direction by the weight of the concrete filled in the concrete mold 1. It will be possible to prevent it reliably.

  Further, the fixing means is constituted by a fixing screw that is screwed to the bearing base 71 and presses and fixes the rotating shaft portion 72 at the tip thereof, thereby preventing the male screw rod 73 from rotating, and the shutter 4 It becomes possible to reliably prevent rotation in the opening direction.

  Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and a design change or the like within a range not departing from the gist of the present invention is included in the present invention.

  For example, although the example used for the concrete press-fitting to the concrete formwork was shown in the embodiment, it can be used as a concrete press-fitting device to the concrete-filled steel pipe structure by opening the bolt connection part on the structural frame surface.

DESCRIPTION OF SYMBOLS 1 Concrete formwork 1a Inner surface of concrete formwork 11 Concrete press-fit opening part 12 Mold frame side connection flange part 12a Insertion hole 2 Concrete press-fit pipe 3 Panel part 31 Concrete press-fit opening part 32 Panel side connection flange part 32a Insertion hole 4 Shutter 41 times Moving shaft 42 Plane portion 43 Phase portion 44 Reinforcement rib 5 Concrete press-fit portion 51 Connection pipe 51a Through hole 52 Nut 52a Screw hole 61 Bolt / nut 62 Connecting pin 62a Pin 62b Wedge 7 Opening and closing drive device 71 Bearing base 72 Rotating shaft portion 73 Male Screw part 74 Pressing part 75 Female screw hole 76 Nut part 8 Flash diaphragm pressure gauge

Claims (4)

A concrete press-fitting jig for connecting a concrete press-fitting jig to a concrete press-fitting opening established in a concrete formwork and forcing concrete into a concrete formwork from a concrete press-fit pipe connected to the concrete press-fit jig,
The opening edge of the concrete press-fit opening of the concrete mold is provided with a mold-frame-side connecting flange that protrudes outside the concrete mold,
The concrete press-fitting jig includes a panel portion that closes the concrete press-fit opening portion on the inner surface of the concrete mold and a shutter that opens and closes the concrete press-fit opening portion opened in the panel portion on the inner surface side of the concrete mold. A concrete press-in part,
The outer peripheral edge of the panel part is detachably connected to the formwork side connection flange with a bolt in the case of a wooden concrete formwork or with a bolt or a dedicated connection pin in the case of a metal concrete formwork. With the panel side connecting flange part to attach the panel part to the concrete press-fit opening by
The concrete press-fit portion includes a connection pipe that connects the concrete press-fit opening to a concrete press-fit pipe,
A flush diaphragm type pressure gauge for measuring the concrete side pressure at the time of concrete press-fitting on the side of the connecting pipe,
The shutter rotates in the direction of the concrete press-in opening around the rotation axis, thereby closing the concrete press-in opening in the same plane along the inner surface of the concrete mold and in a direction away from the concrete press-in opening. It has a flat part that allows the concrete press-fitting opening and the connecting pipe to communicate with each other by rotating,
When pressing the concrete into the concrete formwork, the flat part of the shutter is rotated in a direction away from the press-fitting opening and the concrete is press-fitted into the concrete formwork from the concrete press-in pipe. A concrete press-fitting jig, wherein the part is rotated in a direction to close the concrete press-fitting opening. In the concrete press fitting jig according to claim 1,
A concrete press-fitting jig characterized in that the shutter is provided with an opening / closing drive device for turning the shutter from a state where a concrete press-fit opening is opened to a closed state about the rotation axis. The concrete press-fitting jig according to claim 2,
The opening / closing drive device is composed of a male threaded rod having a rotation shaft portion rotatably supported by a bearing base portion which is rotatably provided in the concrete press-fitting portion at the base end portion.
The tip of the male screw rod is screwed into the female screw hole of the pressing portion provided to be freely rotatable in the front-rear direction to the tip of the curved portion that extends in an arc from the tip edge of the flat portion of the shutter about the turning shaft. And
A concrete press-fitting jig, wherein the rotary shaft portion includes a nut portion for mounting a rotary tool such as a ratchet wrench. In the concrete press-fitting jig according to any one of claims 1 to 3,
A concrete press-fitting jig comprising fixing means for fixing the shutter in a state where at least a concrete press-fit opening is closed.