JP2010230112A - Pipe drawing-out device for existing piping and pipe drawing-out method for existing piping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe drawing-out device for existing piping and a pipe drawing-out method for existing piping which eliminate noise during chipping work, prevent the production of concrete splinters and dust, and allows existing piping to be easily and surely drawn out of a through-hole of an existing building such as concrete slab and wall. <P>SOLUTION: The pipe drawing-out device 10 of existing piping which is employed to draw upward out of the structural portion 101 the existing piping T arranged so as to pass through a structural portion 101 of a building and having a lower end cut off, is equipped with an existing piping connection tool 11 having one end detachably mounted with respect to a cut-off end T1 of the existing piping T and pushing-up operation part 12 keeping a lower end with respect to a base 102 situated at the lower part of the structural portion, and drawing the existing piping T upward out of the structural portion 101 by pushing up the existing piping connection tool 11 in a state that a top end detachably holds the other end of the existing piping connection tool 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an existing pipe extracting device and an existing pipe extracting method, and more particularly to an existing pipe for removing existing pipes such as sanitary equipment pipes, air conditioning pipes, gas pipes, etc. The present invention relates to a pipe draining device and an existing pipe draining method.

  In case of renewal work that replaces old piping in an existing building with new piping, the existing piping penetrating the concrete slab or wall is extracted from the through hole, and then the existing piping is extracted and then the concrete slab or wall is removed. Connecting through a new pipe to a through hole made in the same manner has been performed.

  In addition, the existing pipe buried in the concrete slab or wall is cut without leaving it, and the existing pipe part left by this cutting has a new outer diameter smaller than the inner diameter of the existing pipe. A method of inserting existing piping and updating existing piping in a short time is disclosed (see Patent Document 1).

JP-A-2005-214376

  However, when renewing existing pipes in this way, in order to extract existing pipes buried in concrete slabs and walls, the concrete and walls around the buried parts of existing pipes are filled around the existing pipes. After chopping the mortar using an air excavator, etc., the existing piping must be cut and removed, which may cause a lot of noise during the chopping work and generate a lot of concrete dust and dust. There is.

  Further, when a new pipe having an outer diameter smaller than the inner diameter of the existing pipe is inserted into the existing pipe portion left by cutting, no noise problem, large amount of dust or dust is generated. However, since a new pipe with a smaller outer diameter is inserted into the existing pipe, the inner diameter of the new pipe is smaller than the inner diameter of the existing pipe, so the flow rate of water, air, or gas that passes through the new pipe Decreases. Therefore, the inner diameter of the new pipe is made as large as possible so that the flow rate of water, air, or gas passing through the new pipe is not reduced, so that the existing pipe and the new pipe can exhibit the same fluid supply capability. Therefore, it is necessary to make the thickness of the new pipe as thin as possible. For this reason, the restriction | limiting that the material of new piping must use stainless steel piping, for example arises.

  Therefore, in order to solve the above-mentioned problems, the present invention eliminates the noise of crushing work, prevents the generation of concrete dust and dust, makes it easy to connect the existing piping from the through-holes of existing buildings such as concrete slabs and walls. An object of the present invention is to provide an existing pipe extracting apparatus and an existing pipe extracting method capable of reliably extracting pipes.

  According to the present invention, the subject is an existing pipe evacuation device for pulling upward an existing pipe arranged through a structural part of a building and having a lower end cut off from the structural part, An existing pipe connector having one end detachably attached to a cut end of an existing pipe, and a lower end portion is disposed with respect to a base portion at a lower portion of the structure portion, and an upper end portion of the existing pipe connector An extruding device for an existing pipe, comprising: a push-up operation unit for holding the other end detachably and pushing up the existing pipe connector to pull the existing pipe upward from the structural part. Achieved.

  According to the said structure, a lower end part is arrange | positioned with respect to the existing piping connection tool with which one end part is detachably mounted with respect to the cutting | disconnection edge part of existing piping, and the lower part of a structure part, and an upper end part is already installed. It has a push-up operation part for holding the other end of the pipe connector detachably and pushing up the existing pipe connector to pull the existing pipe upward from the structure. Thus, it is possible to prevent the occurrence of concrete dust and dust, and to easily and surely remove the existing pipe from the through hole of the existing building such as the concrete slab or the wall.

  Preferably, the existing pipe connector is fitted into an existing pipe push-out member having an upper end fitting portion fitted and attached to a cut end portion of the existing pipe, and a lower end fitting portion of the existing pipe push-out member. An extubation device for an existing pipe, comprising: an upper end portion to be connected; and a joint member having a lower end portion connected to an upper portion of the push-up operation portion.

  According to the above configuration, the existing pipe connector is fitted into the existing pipe push-out member having the upper end fitting part fitted into the cut end of the existing pipe and fitted into the lower end fitting part of the existing pipe push-out member. An upper end portion to be connected; and a joint member having a lower end portion connected to an upper portion of the push-up operation portion. Thereby, it can connect with respect to the cutting end part of existing piping reliably by selecting the diameter of the existing piping extrusion member according to the cutting end part of existing piping. In addition, by changing the length of the existing piping push-out member, it is possible to perform the pipe extraction work of the existing piping corresponding to different floor heights.

  Preferably, the push-up operation portion is disposed between the support member arranged upright with respect to the base portion, the upper end portion of the support member and the other end portion of the existing pipe connector, and the existing pipe connection And a jack member for pulling up the existing pipe and pulling out the existing pipe from the structural portion.

  According to the above-described configuration, the push-up operation unit is disposed between the support member arranged upright with respect to the base, the upper end portion of the support member, and the other end portion of the existing pipe connector, and the existing pipe connector is And a jack member for pushing up and removing the existing piping from the structural portion. Therefore, the existing piping can be easily and reliably pulled upward from the structural portion using the force of the jack member.

  Preferably, the jack member is connected to the support member, and rotates upward with respect to the support member by rotating an operation unit to push up the existing pipe connector and pull out the existing pipe from the structural portion. It is the extubation device of the existing piping characterized by becoming.

  According to the above configuration, the jack member is connected to the support member, and is configured to move upward with respect to the support member by rotating the operation unit to push up the existing pipe connection tool and remove the existing pipe from the structural portion. Therefore, the existing piping can be easily and reliably pulled upward from the structural portion using the force of the jack member.

  Preferably, the structural part of the building is a concrete slab, and the base of the building is another concrete slab located on the lower side of the slab.

  According to the said structure, since the said structural part of a building is a concrete slab and the base of a building is another concrete slab located in the lower side of a slab, even if a structural part is a concrete slab, existing piping is upward Can be easily and securely pulled out.

  According to the present invention, the subject is a method of extracting an existing pipe for pulling upward an existing pipe arranged through a structural part of a building and having a lower end cut off from the structural part. One end portion of the pipe connector is detachably attached to the cut end portion of the existing pipe, and the lower end portion of the push-up operation portion is disposed with respect to the base portion at the lower portion of the structure portion, and the push-up operation portion The other end of the existing pipe connector is detachably held by the upper end of the existing pipe connector, and the existing pipe connector is pushed up by the operation of the push-up operation unit to pull the existing pipe upward from the structural portion. This is achieved by a method of extracting the existing piping.

  According to the above configuration, one end of the existing pipe connector is detachably attached to the cut end of the existing pipe, and the lower end of the push-up operation part is disposed with respect to the base at the lower part of the structure part. The upper end portion of the push-up operation portion holds the other end portion of the existing pipe connector detachably, and the existing pipe connector is pushed up by the operation of the push-up operation portion, and the existing pipe is pulled upward from the structural portion. This eliminates the noise of chipping work, prevents the generation of concrete dust and dust, and allows the existing piping to be easily and reliably extracted from the through-holes of the existing building such as concrete slabs and walls.

  The present invention eliminates the noise of chipping work, prevents the generation of concrete dust and dust, and allows the existing piping to be easily and reliably extracted from the through-holes of existing buildings such as concrete slabs and walls. There is an advantage that an apparatus and a method of extracting a pipe existing can be provided.

1 is a front view showing a preferred embodiment of an existing pipe extracting device of the present invention. It is a perspective view which shows the tube extraction apparatus of the existing piping of FIG. It is a front view which abbreviate | omits and shows a part of extracting apparatus of the existing piping of FIG. It is an exploded view which expands and further shows a part of the pipe extraction apparatus of the existing piping of FIG. It is a figure which shows an example of a jack member. It is a figure which shows a mode that the existing piping is extracted from an upper slab. It is a front view which shows another embodiment of this invention. It is a front view which has a partial cross section which shows the structural example of a push-up operation part.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view showing a preferred embodiment of an existing pipe extracting device of the present invention. FIG. 2 is a perspective view showing the existing pipe extracting device of FIG. 1, and FIG. 3 is an enlarged front view showing a part of the existing piping extracting device of FIG. FIG. 4 is an exploded view showing a part of the existing pipe extracting device of FIG.
The existing pipe extracting device 10 shown in FIG. 1 passes through the pipe shaft PS of the structural part in the existing building 100 and is arranged along the vertical direction, and the existing pipe T with the lower end cut off from the structural part upward. It is a device for pulling out. The existing pipe extracting device 10 includes an existing pipe connector 11 and a push-up operation unit 12.

  As shown in FIGS. 1-3, the existing building in this Embodiment has shown the apartment house of a concrete structure, for example. The existing pipe extracting device 10 is set along the vertical direction CL between the upper slab 101 and the lower slab 102 of the existing building. The upper slab 101 and the lower slab 102 are structural parts of the existing building 100, and the lower slab 102 corresponds to a base for installing the existing pipe extracting device 10. As an example, the existing pipe T that is the target of the pipe extraction work is a water supply / drainage pipe. The floor height of the upper slab 101 and the lower slab 102 is, for example, 2600 mm, and the thickness of the upper slab 101 and the lower slab 102 is, for example, 150 mm.

1-3, one end of the existing pipe connector 11 is detachably attached to the cut end T1 of the existing pipe T, and the other end of the existing pipe connector 11 is the upper end of the push-up operation unit 12. Removably attached to the. The lower end part of the push-up operation part 12 is arranged with respect to the base part at the lower part of the structure part, and the upper end part of the push-up operation part 12 holds the other end part of the existing pipe connector 11 in a detachable manner. This is a part for pushing up the connection tool 11 and pulling the existing pipe T upward from the structural part.
As shown in FIGS. 2 and 3, the existing pipe T is fitted in the through hole 120 of the upper slab 101. The existing pipe T is, for example, a steel pipe. An anticorrosion tape 121 is wound around the existing pipe T, and a mortar 122 is filled between the anticorrosion tape 121 and the inner peripheral surface of the through hole 120. . The existing pipe T is cut in advance at a lower part than the upper slab 101, and becomes a cut end T1.

  As shown in FIGS. 3 and 4, the existing pipe connector 11 includes a cylindrical pipe-shaped existing pipe push-out member 20 and a cylindrical pipe-shaped joint member 30. The existing pipe pushing member 20 has a thin upper end mounting portion 21 and a thin lower end mounting portion 22. The upper end mounting portion 21 is mounted by being fitted to the cut end portion T1 of the existing pipe T. The existing pipe pushing member 20 is used in accordance with the size of the cutting end T1 of the existing pipe T, and the existing pipe pushing member 20 serves as a jig for connecting the cutting end T1 of the existing pipe T and the inheriting member 30. Fulfill.

The connecting member 30 has an upper end portion 31 and a lower end portion 32. The upper end portion 31 is a portion that is detachably fitted to and connected to the lower end mounting portion 22 of the existing pipe pushing member 20. The lower end 32 is detachably connected to the upper part of the push-up operation unit 12.
As shown in FIGS. 1 and 2, the push-up operation unit 12 includes a support member 41 and a jack member 42. The support member 41 is arranged upright along the central axis CL with respect to the lower slab 102 which is the base. The jack member 42 is detachably fixed to the support member 41. By operating the operation unit 44, the jack member 42 moves upward with respect to the support member 41 to push up the existing pipe connector 11 in the Z1 direction (see FIG. 1). This is a part for removing the existing pipe T upward from the through hole 120 of the upper slab 101 which is a structural part.

  As the support member 41, for example, a pipe support for a formwork can be used. The support member 41 has a lower flange portion 41B and an upper flange portion 41C. The length of the support 41 can be, for example, 900 to 1400 mm. As shown in FIG. 5, the jack member 42 is a hydraulic jack as an example, and the lifting capacity is, for example, 10 tons. The jack member 42 has a main body portion 43 and a handle 44, and when an operator manually operates the handle 44, the pressing cylinder member 45 of the main body portion 43 is pushed up in the Z1 direction. As shown in FIG. 4, the pressing cylinder member 45 of the jack member 42 and the lower end portion 32 of the connecting member 30 are connected via a receiving member 47.

Next, a method for assembling the above-described existing pipe extracting device 10 and extracting the existing pipe T from the upper slab 101 will be described. FIG. 6 is a view showing a state where the existing pipe T is extracted from the upper slab 101.
As shown in FIGS. 1 and 2, the operator assembles the existing pipe extracting device 10 as follows. The operator places the lower flange portion 41B of the support member 41 on the lower slab 102, and stands the support member 41 so as to be vertical along the central axis CL. The operator fixes the jack member 42 on the upper flange portion 41 </ b> C of the support member 41.

On the other hand, the existing pipe T is cut with a cutting tool at a position below the upper slab 101 to form a cut end T1. The upper end mounting portion 21 of the existing pipe pushing member 20 is fitted into the cut end T1 of the existing pipe T and mounted. The existing pipe push-out member 20 is used in accordance with the size of the cut end T1 of the existing pipe T, and serves as a jig for connecting the cut end T1 of the existing pipe T and the joint member 30. Moreover, the upper end portion 31 of the joint member 30 is detachably fitted into and connected to the lower end mounting portion 22 of the existing pipe pushing member 20. The lower end 32 is connected to the pressing cylinder member 45 of the push-up operation unit 12 via a receiving member 47 so as to be detachable.
Thereby, the existing pipe connection tool 11 and the push-up operation part 12 can be arranged upright in the Z1 direction around the central axis CL between the cut end T1 of the existing pipe T and the lower slab 102.

  Next, by manually operating the handle 44 shown in FIG. 5, the operator pushes up the pressing cylinder member 45 of the main body 43 in the Z1 direction (see FIG. 1), so that FIGS. As shown in B), the cut end T1 of the existing pipe T can be easily and reliably pulled out from the mortar 122 of the through hole 120 of the upper slab 101 in the Z1 direction. In this way, when extubating the existing pipe T from the mortar 122 of the through hole 120 of the upper slab 101, it is possible to eliminate the noise of the upper slab 101 and the mortar 122 that have been conventionally required, and to eliminate noise. It is possible to easily and surely remove the existing pipe T from the through-hole 120 of the concrete slab while preventing generation of concrete dust and dust.

When the existing pipe T is a steel pipe, as shown in FIGS. 1 and 2, since the anticorrosion tape and the mortar are interposed, the existing pipe T of the steel pipe is, for example, an existing made of vinyl chloride that does not require the anticorrosion tape. Although the pulling force is larger than that of the pipe T, even the existing pipe T of the steel pipe can be easily pulled out.
Further, since the cut end portion T1 of the existing pipe T can be pulled out from the mortar 122 of the through hole 120 of the upper slab 101 in the Z1 direction (upward), the extracted existing pipe T is not dropped, and the pipe is removed. Safety can be ensured.
Since the existing pipe T is pushed upward with a force within a predetermined range using the jack member 42 and pulled out from the through hole 120 of the slab, the mortar of the slab can be pulled out without breaking, so a new pipe can be removed from the slab. The through hole 120 can be reliably inserted.
By preparing the existing pipe connectors 11 having different lengths, the existing pipe T can be reliably pulled out in accordance with the size of the floor height S.

Next, another embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is a front view showing another embodiment of the present invention, and FIG. 8 is a front view having a partial cross section showing a structural example of the push-up operation unit 12B.
The embodiment of the present invention shown in FIG. 7 is different from the embodiment of the present invention shown in FIG. 1 in the following points, and the other elements are substantially the same. The description is omitted.

  In the embodiment of the present invention shown in FIG. 7, the structure of the push-up operation unit 12B is different. As illustrated in FIG. 8, the push-up operation unit 12 </ b> B includes a cylindrical pipe-shaped support member 151 and a cylindrical pipe-shaped jack member 152. The support member 151 has a lower flange portion 154, and the lower flange portion 154 of the support member 151 is arranged upright with respect to the lower slab 102 that is a base portion. The jack member 152 has an upper flange portion 153, and the lower end portion 32 of the joint member 30 is detachably connected to the upper flange portion 153.

An example of the structure of the jack member 152 is shown in FIG. 8, and the operation unit 155 has a handle 156. The operation unit 155 is fixed to the jack member 152. The jack member 152 has a male screw portion 157. On the other hand, an internal thread 158 is formed inside the support member 151, and the external thread 157 is engaged with the internal thread 158. As a result, when the operator holds the handle 156 and rotates the operation unit 155 around the central axis CL, the jack member 152 rises in the Z1 direction or descends in the Z2 direction with respect to the support member 151. Can do.

By the way, this invention is not limited to the said embodiment, A various modified example is employable. The existing piping that is the object of the pipe extraction work is, for example, a water supply / drainage pipe, but is not limited thereto, and may be an air conditioning pipe or a gas pipe, and is not particularly limited to the thickness or material of the existing pipe. The building part into which the existing pipe T is inserted and fixed may be not only a concrete slab but also a wall, and is not particularly limited.
The existing building may be a building other than the apartment house. The existing pipe pushing member 20 and the cylindrical pipe-shaped joining member 30 of the existing pipe connector 11 may be a single cylindrical pipe-like member instead of separate members.

  DESCRIPTION OF SYMBOLS 10 ... Existing pipe extracting device, 11 ... Existing pipe connector, 12, 12B ... Push-up operation part, 20 ... Existing pipe pushing member, 21 ... Upper end mounting part, 22 ... Lower end mounting portion, 30 ... transmission member, 31 ... upper end portion, 32 ... lower end portion, 41 ... support member, 41B ... lower flange portion, 41C ... upper flange portion, 42. ..Jack member, 43... Main body, 44 .. handle, 47 .. receiving member, 100... Existing building, 101 .. upper slab, 102. Through hole of upper slab, 120 ... through hole, CL ... vertical direction, T ... existing pipe T, T1 ... cut end

Claims (6)

An existing pipe exhausting device for extracting an existing pipe arranged through a structural part of a building and having a lower end cut off from the structural part,
An existing pipe connector that is detachably mounted at one end with respect to the cut end of the existing pipe;
A lower end portion is disposed with respect to a base portion at a lower portion of the structural portion, and an upper end portion detachably holds the other end portion of the existing pipe connector, and pushes up the existing pipe connector to A push-up operation part for pulling upward from the structure part;
An extubation device for existing piping, comprising: The existing pipe connector is
An existing piping push-out member having an upper end mounting portion that is fitted and mounted to a cutting end portion of the existing piping;
The upper end part fitted in and connected to the lower end mounting part of the existing pipe push-out member, and a joint member having a lower end part connected to the upper part of the push-up operation part. Extrusion device for existing piping as described in 1. The push-up operation part is a support member arranged upright with respect to the base part,
A jack member disposed between an upper end portion of the support member and the other end portion of the existing pipe connector, for pushing up the existing pipe connector and pulling out the existing pipe from the structural portion; 3. The existing pipe evacuation device according to claim 1 or claim 2, wherein   The jack member is connected to the support member, and rotates upward with respect to the support member by rotating an operation unit to push up the existing pipe connector and pull out the existing pipe from the structural portion. The extubation device for an existing pipe according to claim 3.   5. The existing pipe extubation device according to claim 4, wherein the structural part of the building is a concrete slab, and the base of the building is another concrete slab located below the slab. An existing pipe that is disposed through a structural part of a building and has a lower end cut off, and is a method of extracting an existing pipe for pulling upward from the structural part,
One end of the existing pipe connector is detachably attached to the cut end of the existing pipe,
The lower end portion of the push-up operation portion is disposed with respect to the base portion at the lower portion of the structure portion, and the upper end portion of the push-up operation portion detachably holds the other end portion of the existing pipe connector so that the push-up operation is performed. The existing pipe connection tool is pushed up by an operation of the section to pull the existing pipe upward from the structural portion.

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