JP6185315B2 - Piping material drawing tool and piping material drawing device - Google Patents

Description

The present invention relates to a piping material drawing tool and a piping material drawing device for drawing a corrugated pipe into a laying path.

  Conventionally, for example, a jig has been used to draw a corrugated pipe into an outer pipe (see, for example, Patent Document 1). As shown in FIG. 6, the pull-in jig is composed of a combination of a pulling connecting member 21 as a piping material pulling tool and a guide portion 22. Here, the pulling connecting member 21 includes a plate-like connecting member 21a to which the pulling wire 23 is connected, and a cylindrical body 21b. On the other hand, the guide part 22 was composed of a curved head part 22a and a spiral mounting part 22b following the curved head part 22a. Therefore, the helical mounting portion 22b was inserted into the cylindrical body 21b from the front and screwed into the tip portion of the corrugated tube 24 located at the rear. Thus, the corrugated tube 24 is attached to the pulling connecting member 21 via the guide portion 22, and the pulling of the pulling wire 23 connected to the connecting member 21 a allows the corrugated tube 24 to be drawn into the outer tube 25. did it.

JP 2000-193137 A

  By the way, in the said jig | tool for drawing-in, both the pulling connection member 21 as a piping material drawing tool and the guide part 22 were the exclusive goods as a jig | tool for drawing-in. Therefore, in preparation for the case where the guide portion 22 is damaged, the guide portion 22 that is a dedicated product must always be prepared. Moreover, in order to correspond to the corrugated pipes 24 having different sizes, both the traction connecting member 21 and the guide portion 22 had to be exchanged. Thus, in the pulling connecting member 21 (retraction jig) as the piping material retracting tool, it is necessary to always prepare the guide portion 22 which is a dedicated product in preparation for breakage, In order to correspond to the corrugated pipes 24 having different sizes, it is necessary to exchange both the traction connecting member 21 and the guide part 22, and the usability is not good.

The present invention has been made to solve the above-described conventional drawbacks, and an object thereof is to provide a piping material drawing tool and a piping material drawing device that are easy to use.

In order to achieve the object, the piping material drawing tool and the piping material drawing device according to the present invention have the following configuration. That is,
The piping material drawing tool according to the first aspect of the invention is a drawing tool for drawing a corrugated pipe as a piping material suitable for a synthetic resin flexible conduit made of JIS C8411 from the starting point to the ending point of the laying path. . This piping material drawing tool includes a drawing tool body. Here, the corrugated tube conforming to the connecting portion to which the elongated material passed from the start point to the end point is connected to the retractor main body and the flexible conduit tube accessory made of synthetic resin of JISC8412 standard is provided. the connector having a mounted portion on the other end and having a connection to the connection port on one end, the coupling with the mounting base, and the mounting portion is provided.

According to this piping material retractor, the retractor main body is provided with a connecting portion to which the elongated member is connected and an attaching portion to be coupled with the attached portion of the connector. Then, with respect to the elongated material passed from the starting point to the ending point of the laying path, the elongated material is connected to the connecting portion of the piping material drawing tool on the starting point side. And a connector is attached to the attachment part of this piping material drawing tool, Furthermore, a corrugated pipe is connected to the connection port of a connector. Then, the corrugated tube can be drawn from the start point to the end point of the installation path by pulling the elongated material on the end point side of the installation path. Here, the corrugated pipe is a piping material compatible with a synthetic resin flexible conduit made of JISC8411 standard, and the connector is a connector compatible with a synthetic resin flexible conduit made of JISC8412 standard. For this reason, even if it is a case where the connector attached to the attachment part of a piping material drawing tool is damaged, since the connector is a standard product, the connector for replacement | exchange can be obtained easily. In addition, since the connector is generally the same size as the part attached to the attachment part of the piping material retracting tool with respect to the plurality of sizes of the connection port, Therefore, it is possible to respond by changing the connector without changing the piping material drawing tool.

Moreover, the piping material drawing tool according to the invention of claim 2 is the piping material drawing tool according to claim 1, wherein the mounting portion is a male or female screw portion formed in the mounted portion of the connector. A female or male screw portion that is screwed onto the screw.
The piping material drawing device according to the invention described in claim 3 is a piping material for drawing a corrugated pipe as a piping material suitable for a synthetic resin flexible conduit made of JIS C8411 from the starting point to the ending point of the laying path. It consists of a retractor and a connector. Here, the connector conforms to the JIS C8412 standard synthetic resin flexible conduit tube accessory, and has a connection port to which the corrugated tube is connected on one end side and on the other end side. It has a mounted part. And the said piping material drawing tool is provided with the drawing tool main body, and the attachment part couple | bonded with the said attachment part with the connection part to which the elongate material passed over the said drawing tool main body over the said end point is connected. Are provided.
According to this piping material drawing device, the drawing tool main body of the piping material drawing tool is provided with a connecting portion to which the elongated material is connected and an attachment portion to be coupled with the attached portion of the connector. Then, with respect to the elongated material passed from the starting point to the ending point of the laying path, the elongated material is connected to the connecting portion of the piping material drawing tool on the starting point side. And a connector is attached to the attachment part of this piping material drawing tool, Furthermore, a corrugated pipe is connected to the connection port of a connector. Then, the corrugated tube can be drawn from the start point to the end point of the installation path by pulling the elongated material on the end point side of the installation path. Here, the corrugated pipe is a piping material compatible with a synthetic resin flexible conduit made of JISC8411 standard, and the connector is a connector compatible with a synthetic resin flexible conduit made of JISC8412 standard. For this reason, even if it is a case where the connector attached to the attachment part of a piping material drawing tool is damaged, since the connector is a standard product, the connector for replacement | exchange can be obtained easily. In addition, since the connector is generally the same size as the part attached to the attachment part of the piping material retracting tool with respect to the plurality of sizes of the connection port, Therefore, it is possible to respond by changing the connector without changing the piping material drawing tool.
Moreover, the piping material drawing-in device according to the invention described in claim 4 is the piping material drawing-in device according to claim 3, wherein the attached portion is formed with a male or female screw portion, A female or male screw portion that is screwed into the male or female screw portion formed in the attached portion is provided.

According to the piping material drawing tool and the piping material drawing device according to the present invention, a replacement connector can be easily obtained, and it is possible to cope with a plurality of corrugated pipes by changing the connector. It is easy to use.

It is a schematic front view which shows the state of the beginning of drawing in a corrugated tube of one embodiment of this invention. Similarly, it is a perspective view which shows the state in the middle of drawing in a corrugated pipe | tube. Similarly, it is a perspective view of a piping material drawing tool. Similarly, it is a top view of a piping material drawing tool. Similarly, it is sectional drawing by the AA in FIG. It is sectional drawing which shows the jig | tool for conventional drawing-in.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the piping material drawing tool and piping material drawing-in apparatus which concern on this invention is demonstrated based on drawing.

1 to 5 show an embodiment of the present invention. Reference numeral 1 in the figure indicates a laying path. 2 shows a corrugated pipe as a piping material suitable for a synthetic resin flexible conduit made of JISC8411 standard. Reference numeral 3 denotes a connector having a connection port 3a to which the corrugated pipe 2 is connected in conformity with the synthetic resin flexible conduit fitting of JIS C8412 standard. 4 shows a piping material drawing tool. Therefore, the piping material drawing device includes the piping material drawing tool 4 and the connector 3.

  Here, the piping material retracting tool 4 is a retracting tool for retracting the corrugated pipe 2 from the starting point 1 a to the ending point 1 b of the laying path 1, and includes a retracting tool body 5. And in this retractor main body 5, the connection part 6 to which the elongate material 10 passed over from the starting point 1a of the installation path | route 1 to the end point 1b is connected, and the attaching part 7 to which the said connector 3 is attached are provided. It has been.

  Specifically, the piping material drawing tool 4 is a drawing tool for drawing the corrugated pipe 2 between the reinforcing bars 1c and 1c described later. This piping material retracting tool 4 includes a main body member 4a made of a soft material such as rubber, and a metal connecting tool 4b having the connecting part 6, each having the retracting tool main body 5 and the attachment part 7. Prepare. Here, the retractor main body 5 in the main body member 4a is formed in a flat plate shape. Specifically, the retractor main body 5 includes a base portion 5a that extends to the left and right (specifically, to the left and right toward the oblique rear), and a plurality of pieces (specifically, three that extend rearward from the center and the left and right positions of the base portion 5a. ) Extending portions 5b and 5b. And the attachment part 7 is provided in the front-end | tip which the extension parts 5b and 5b extended so that the said attachment part 7 may bulge in a cylinder shape. Here, the central extension portion 5b extends rearward longer than the left and right extension portions 5b, and the attachment portion 7 is positioned so that the central attachment portion 7 projects rearward from the left and right attachment portions 7. ing. The length of the central extending portion 5b determines the length of the main body member 4a before and after, and the length is longer than the interval between the bar arrangements 1c and 1c described later.

  The attachment portion 7 has a female or male screw portion 7a that is screwed into a male or female screw portion 3b included in the connector 3. In the illustrated embodiment, the screw portion 7a is provided on the inner peripheral surface of the attachment portion 7. It consists of a female thread. The screw portions 3b and 7a are adapted to, for example, JIS B0202 standard pipe parallel screws, and G1 / 2 screws or G3 / 4 screws are used. Further, the base end portion 7b of the mounting portion 7 is formed in a conical shape having a diameter smaller toward the retractor main body 5 side.

  Further, the extending portions 5b and 5b are positioned with a sufficient interval. For this reason, the connectors 3 and 3 attached to the attachment portions 7 and 7 and the corrugated pipes 2 and 2 connected to the connectors 3 and 3 are located apart from each other, and the attachment work and corrugation of the connectors 3 and 3 are performed. The connection work of the pipes 2 and 2 can be smoothly advanced without interfering with each other.

  The connector 4b is attached to the tip of the base 5a of the retractor main body 5 (main body member 4a) so that the connector 6 is exposed. Specifically, the connecting tool 4b is inserted and attached to the retractor main body 5 (main body member 4a), and the connecting portion 6 is provided with a connecting hole 6a.

  The connector 3 is formed in a cylindrical shape, has the connection port 3a on one end thereof, and has the male or female screw portion 3b (in the illustrated embodiment, a male screw) formed on the other end. It has a part 3c. Here, an engagement claw or an engagement piece (not shown) that engages with the irregularities on the outer peripheral surface of the corrugated tube 2 inserted into the connection port 3a is provided on the inner periphery of the connection port 3a. The corrugated tube 2 is prevented from coming off from the connector 3 by the engaging claws or the engaging pieces.

  In the illustrated embodiment, the elongated member 10 is made of synthetic resin or metal, has flexibility, and is formed in a strip shape. The elongated material 10 is for pulling the corrugated tube 2 by pulling the piping material retracting tool 4. In addition, the elongated material 10 is arranged in advance in the laying path 1 and is pushed forward from the end point 1b side in the laying path 1 toward the start point 1a, for example.

  Next, the effect of the piping material drawing tool 4 which consists of the above structure is demonstrated. According to this piping material retracting tool 4, the retracting tool main body 5 is provided with the connecting portion 6 to which the elongated material 10 having flexibility is connected and the mounting portion 7 to which the connector 3 is attached. Therefore, as shown in FIG. 1, with respect to the elongated material 10 passed from the starting point 1 a to the ending point 1 b of the laying path 1, the elongated material 10 is connected to the connecting portion 6 of the piping material retracting tool 4 on the starting point 1 a side. They are connected (in the illustrated embodiment, they are connected via a swivel 11). And the connector 3 is attached to the attachment part 7 of this piping material drawing tool 4, and also the corrugated pipe 2 is connected to the connection port 3a of the connector 3. Next, the corrugated tube 2 can be pulled from the starting point 1 a to the ending point 1 b of the laying path 1 by pulling the elongated material 10 on the ending point 1 b side of the laying path 1. In the illustrated embodiment, the laying path 1 is a path passing through the gap between the bar arrangements 1c and 1c in the reinforced concrete structure after the bar arrangement 1c is arranged and before the concrete is placed. (See FIGS. 1 and 2).

  Here, the corrugated tube 2 is a piping material compatible with a JIS C8411 standard synthetic resin flexible conduit, and the connector 3 is a connector compatible with a JIS C 8412 standard synthetic resin flexible conduit. . For this reason, even if the connector 3 attached to the attachment part 7 of the piping material retracting tool 4 is damaged, the connector 3 is a standard product, so that a replacement connector can be easily obtained. Moreover, since the size of the part attached to the attachment part 7 of the piping material drawing tool 4 is generally the same with respect to the plurality of sizes of the connection port 3a, the connector 3 has a plurality of wave sizes. It is possible to cope with the auxiliary pipes 2 and 2 by changing the connector 3 without changing the piping material retracting tool 4. That is, according to this piping material drawing tool 4, the connector 3 for replacement | exchange can be obtained easily, and it respond | corresponds by changing the connector 3 with respect to the corrugated pipes 2 and 2 of several sizes. It is easy to use.

  The retractor main body 5 is made of a soft material such as rubber and is formed in a flat plate shape. For this reason, when the piping material retracting tool 4 is put into the laying path 1 or taken out from the laying path 1, the pulling tool body 5 is easily bent and deformed. And since the flat extension part 5b is arranged in the left-right direction which is the direction along the plate surface, the extension part 5b, 5b approaches or leaves | separates a plurality (in detail, three). It is difficult to deform in the direction of Therefore, the interval between the extending portions 5b and 5b, and hence the interval between the attachment portions 7 and 7, the interval between the connectors 3 and 3, and the interval between the corrugated tubes 2 and 2 can be kept constant.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the piping material drawing tool 4 may be used for drawing the corrugated pipe 2 into a duct or the like in addition to drawing the corrugated pipe 2 between the reinforcing bars 1c and 1c.

  Moreover, although the three attachment parts 7 and 7 are provided in the piping material drawing-in tool 4, this attachment part 7 may be one, and two or four or more may be provided.

  Further, the attached portion 3c and the attaching portion 7 may not be coupled by a screw structure, but may be by other coupling means.

  Further, the retractable tool body 5 may not be made of a soft material such as rubber but may be made of a hard material, for example, a hard synthetic resin formed in a flat plate shape, a flat metal plate, or the like, Any material that can be bent may be used. Moreover, depending on the situation where the piping material drawing tool 4 is used, the drawing tool main body 5 does not necessarily have to be bendable.

1 Laying path 1a Start point 1b End point 2 Corrugated tube 3 Connector 3a Connection port 3b Male or female screw part
3c to-be-attached part 4 piping material drawing tool 5 drawing tool main body 6 connection part 7 attachment part 7a female or male screw part 10 elongated material

Claims (4)

A retraction tool for drawing a corrugated pipe as a piping material suitable for a synthetic resin flexible conduit made of JISC8411 standard from the start point to the end point of the laying path,
With a retractor body,
The corrugated tube is connected to the lead-in tool body in conformity with a connecting portion to which an elongated material passed from the start point to the end point is connected, and an accessory for flexible conduit tubes made of synthetic resin of JISC8412 standard. A piping material retracting tool, characterized in that a connector having a connection port on one end side and having a mounted portion on the other end side is provided with a mounting portion that is coupled to the mounted portion. The piping material retractor according to claim 1, wherein the attachment portion has a female or male screw portion that is screwed into a male or female screw portion formed in the attached portion of the connector. It consists of a piping material drawing tool and a connector for drawing a corrugated tube as a piping material suitable for a synthetic resin flexible conduit made of JIS C8411 standard from the start point to the end point of the laying path.
The connector conforms to the JIS C8412 standard plastic flexible cable tube accessory, and has a connection port to which the corrugated tube is connected at one end and a mounting portion at the other end. Have
The piping material retractor comprises a retractor body,
The pull-in member main body is provided with a connecting portion to which an elongated material passed from the start point to the end point is connected to the pull-in tool main body, and an attachment portion coupled to the attached portion. apparatus. The attached portion includes a male or female screw portion, and the attachment portion includes a female or male screw portion that is screwed into the male or female screw portion formed in the attached portion. The piping material drawing-in device according to claim 3.

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