JP5450239B2 - Drawer for drainage piping members - Google Patents

Description

  The present invention relates to a drawing jig for drainage piping members.

  In drainage facilities such as apartment houses, a standpipe system is arranged through the floor slab of each floor. For example, as shown in FIG. 13, the drainage pipe joint 11 is embedded in the floor slab S and fixed. Yes. In renewing such drainage equipment, it is necessary to remove the existing drainage pipe joint from the floor slab and install a new drainage pipe joint. Conventionally, when an existing drainage pipe joint is removed from a floor slab, as shown in Patent Document 1 below, a mortar as a joint material between the through hole of the floor slab and the drainage pipe joint is used with a diamond cutter. A method in which an operator pulls up the drainage pipe joint and pulls it out of the floor slab after being destroyed.

JP 2007-138428 A

  In renewal work of drainage facilities in apartment buildings, etc., consideration is required so as not to disturb the daily lives of residents as much as possible. However, when mortar is destroyed with a diamond cutter, there is a problem that vibration and noise are directly transmitted to the living space through the floor slab. In addition, due to advances in drainage technology, drainage pipe joints have become slim, and drainage pipe joints that are newly disposed are often smaller in diameter than the old drainage pipe joints that are removed. Therefore, if the floor slab hole is expanded by destroying the mortar, when burying a new drainage pipe joint, more mortar is required to fill the gap between the hole and the drainage pipe joint. Thus, there is a problem that material loss occurs.

  In view of these problems, it is desirable to pull out the drainage pipe joint from the floor slab without destroying the mortar. Therefore, the outer periphery of the part which protruded from the floor slab of the drainage pipe joint may be grasped, pulled up with a jack, and the drainage pipe joint may be pulled out from the floor slab. However, this is not applicable when the drain pipe joint is difficult to grip. For example, the drain pipe joint 11 shown in FIG. 13 is a so-called vent joint that is one of the representative joints of a single pipe drainage system, and is conventionally widely used in apartment buildings, It is formed by welding steel plates, and when it is gripped around the waist, it is easy to bend and there is little catching, so it is difficult to grip from the outside and lift it with a jack. In addition, not only such a joint, but a pipe member in an embedded state in which the portion protruding from the floor slab is short or does not protrude from the floor slab cannot be gripped from the outside, and therefore cannot be pulled out.

  Therefore, the object of the present invention is to allow the drainage piping member to be pulled out without being restricted by the outer shape or the embedded state of the drainage piping member when removing the drainage piping member embedded in the floor slab from the floor slab. It is in.

In order to solve the above problems, the present invention employs the following means.
The present invention is a drainage piping member extraction jig for removing the drainage piping member embedded in the floor slab from the floor slab, the lifting piece member disposed below the drainage piping member, A shaft member that suspends and supports the lifting piece member through the drainage piping member, a supporting member that supports the shaft member on the upper side of the floor slab, and the lifting piece is raised in the axial direction of the shaft member. A lifting mechanism, the outer diameter of the lifting piece member is formed larger than the inner diameter of the lower end of the drainage piping member, and is configured to support the lower end of the drainage piping member from below, Drainage characterized in that the lower end of the drainage piping member is supported by the lifting piece member from below and lifted by the lifting mechanism to raise and drain the drainage piping member from the floor slab. A withdrawal jig piping member.

  According to such a drainage pipe member extraction jig, when the drainage pipe member (hereinafter, simply referred to as a pipe member) is pulled up, the lower end of the drainage pipe member is supported from below by the lifting piece member. Therefore, piping members of any external shape or embedded form can be pulled out from the floor slab.

  The raising mechanism for raising the pulling piece member according to the present invention includes an upper male screw portion in which a male screw is formed on the shaft member, and a female screw screw hole portion in which a female screw is formed on the support member. The upper male screw portion and the female screw screw hole portion are screwed together so as to be relatively movable in the axial direction, and the shaft member is supported by the support member, and the upper male screw of the shaft member A mechanism that raises the lifting piece member that is integrated with the shaft member as the shaft member is raised by relative rotation that raises the shaft member between the portion and the female screw threaded hole portion of the support member. Preferably there is.

  Further, in the raising mechanism for raising the pulling piece member of the present invention, the shaft member is supported so as to be rotatable about the axis with respect to the support member, and a lower male screw portion in which a male screw is formed in the lower part. The lifting piece member has a female screw threaded hole portion in which a female screw is formed, and the female screw threaded hole portion of the lifting piece member moves in the axial direction with respect to the lower male screw portion of the shaft member. The lifting piece member is supported by the shaft member by freely screwing, and is a mechanism for raising the lifting piece member along the shaft member by rotating the shaft member to raise the lifting piece member. Is also preferable.

  Further, in the drainage pipe member pulling jig according to the present invention, the shaft member is connected to a vibrating means capable of giving a slight vibration to the shaft member. It is preferable to raise the pulling piece member while slightly vibrating. In this case, since the slight vibration is transmitted from the lifting piece member to the drainage piping member, the drainage piping member is easily peeled off from the joint material such as mortar, and the drainage piping member can be smoothly pulled out from the floor slab. .

  According to the drainage pipe member pulling jig of the present invention, the drainage pipe member is not restricted by the outer shape or embedded state of the drainage pipe member to be pulled out, and without destroying the joint material such as mortar. Can be pulled out of the floor slab.

It is a front view of the extraction jig | tool of the piping member for drainage which concerns on Embodiment 1 of this invention, and is a figure which shows the state before extracting a Sovent joint. It is a front view of the extraction jig | tool of the piping member for drainage shown by FIG. 1, and is a figure which shows the state after extracting a Sovent joint. It is a figure which expands and shows the III-III line cross section of the extraction jig | tool of the piping member for drainage shown by FIG. It is a front view of the extraction jig | tool of the piping member for drainage which concerns on the modification 1 of Embodiment 1, and is a figure which shows the state before extracting a Sovent joint. It is a front view of the extraction jig | tool of the piping member for drainage which concerns on the modification 2 of Embodiment 1 of this invention, and is a figure which shows the state before extracting a drain trap. It is a front view of the extraction jig | tool of the piping member for drainage shown by FIG. 5, and is a figure which shows the state after extracting the drain trap. It is a front view of the extraction jig | tool of the piping member for drainage which concerns on the modification 3 of Embodiment 1 of this invention, and is a figure which shows the state before extracting a drainage pipe joint. It is a front view of the extraction jig | tool of the piping member for drainage shown by FIG. 7, and is a figure which shows the process in which a drainage pipe joint is extracted. It is a front view of the extraction jig | tool of the piping member for drainage which concerns on Embodiment 2 of this invention, and is a figure which shows the state before extracting a Sovent joint. It is a front view of the extraction jig | tool of the piping member for drainage shown by FIG. 9, and is a figure which shows the state after extracting a Sovent joint. It is a figure which expands and shows the XI part shown by FIG. It is a figure which expands and shows the XII-XII sectional view of the extraction jig | tool of the piping member for drainage shown by FIG. It is a front view of the Sovent joint which constitutes the conventional drainage.

[Embodiment 1]
An embodiment of the present invention will be described with reference to FIGS. The present embodiment is an example of an embodiment in which an existing Sovent joint 11 embedded in the floor slab S is pulled out. As shown in FIG. 13, the sorbent joint 11 includes a trunk portion 11a, a lower connection portion 11b for connecting the lower floor standing pipe 12b, and an upper connection portion 11c for connecting the upper floor standing pipe 12c. And. The trunk portion 11a has a substantially prismatic shape and has a shape in which the lower portion is biased and narrowed in one direction, and a straight tubular lower connection portion 11b is extended to the lower portion. An upper connection portion 11c extends from a position shifted from the axis of the lower connection portion 11b on the upper portion of the body portion 11a, and extends upward while being bent. Further, two lateral branch pipe connection ports 11d and 11e are provided on the wall surface in one direction of the trunk portion 11a so as to be stepped up and down. The sorbent joint 11 is fixed to the floor slab S in a state of passing through the floor slab S, and a straight tubular lower connecting portion 11b extends to the lower floor.

  As shown in FIG. 1, the drainage pipe member pulling jig 21 of the present embodiment raises the support member 31, the shaft member 41, the lifting piece member 51, and the lifting piece member 51 together with the shaft member 41. And a lifting mechanism 23. First, each member which comprises this extraction jig | tool 21 is demonstrated.

<About Support Member 31>
The support member 31 includes a main body 33 that is erected on the floor slab S. The main body 33 has a pair of leg portions 33a and 33a that are spaced apart from each other and a horizontal support portion 33b that connects the upper ends of the leg portions 33a and 33a, and has a gate shape as a whole. Height adjustment mechanisms 35 and 35 are provided below the leg portions 33a and 33a. Each height adjustment mechanism 35 includes an adjustment bolt 35a and a nut 35b fixed to the lower end of the leg portion 33a. The adjustment bolt 35a is formed with a male screw over substantially the entire length, and is screwed to the nut 35b so as to be able to advance and retreat. The height of the support member 31 can be adjusted by adjusting the screwing amount of the adjustment bolt 35a, and the height is maintained at that position.

  The support member 31 is provided with a vertical through hole 37 through which the shaft member 41 can be inserted in the center of the support portion 33 b of the main body 33, and has a nut 39 separate from the main body 33. The nut 39 has an outer shape larger than the inner diameter of the through hole 37 of the support portion 33b, and a female screw is formed in the central through hole. Then, the shaft member 41 is screwed into a portion protruding upward from the through hole 37 of the shaft member 41 inserted into the through hole 37 of the support portion 33 b, and the shaft member 41 is prevented from being detached from the through hole 37 via the thrust bearing 40. Yes. The shaft 39 is supported by the support portion 33b by the nut 39. The nut 39 is screwed to the shaft member 41 so as to be relatively movable in the axial direction, and corresponds to the female screw screw hole portion of the present invention. As will be described in detail later, the lifting mechanism 23 is also configured. To do.

<About the shaft member 41>
The shaft member 41 is formed with a male screw that is screwed with a nut 39 that is a female screw screw hole portion of the support member 31 at an upper portion thereof. A portion where the male screw is formed is referred to as an upper male screw portion 43. The upper male screw portion 43 is formed long in the axial direction, and is screwed to the nut 39 so as to be relatively movable in the axial direction. The shaft member 41 is disposed so as to penetrate the sovent joint 11 and penetrates the center of the opening at the lower end of the sovent joint 11. That is, it is arranged coaxially with the straight tubular lower connecting portion 11b. As shown in FIG. 13, in the vent joint 11, the upper connection portion 11 c related to the connection with the drainage stack 12 c on the upper floor extends upward from a position where the tube axis is shifted from the lower connection portion 11 b and is bent. ing. Therefore, in the vent joint 11, since there is no linearly communicating opening directly above the lower connecting portion 11 b, a hole is made in the top plate and the shaft member 41 is penetrated. As shown in FIG. 1, a lifting piece member 51 is attached to the lower end portion of the shaft member 41 that protrudes downward through the vent joint 11. In the present embodiment, the two rod-like members 41 a and 41 b are connected by the connecting tool 42 to form one shaft member 41.

<About the pulling piece member 51>
As shown in FIG. 3, the lifting piece member 51 has a shape in which substantially disk-shaped portions having different diameters are concentrically stacked one above the other, and a relatively large-diameter support portion 55 and a single piece thereon. A positioning portion 57 having a relatively small diameter is formed, and a step portion 55 a is formed on the periphery of the upper surface of the support portion 55. The outer diameter of the support portion 55 is formed in a flat cylindrical shape that is larger than the inner diameter α of the lower connection portion 11 b of the sovent joint 11 and smaller than the outer diameter β of the lower connection portion 11 b. The outer diameter of the positioning portion 57 is formed smaller than the inner diameter α of the lower connecting portion 11b of the sovent joint 11, and can be inserted into the lower connecting portion 11b. The positioning portion 57 has a tapered shape gently narrowed upward, and the insertion into the lower connection portion 11b can be guided by the tapered shape.

  The lifting piece member 51 has a through hole 53 formed in the center, and is supported by being suspended from the shaft member 41 with the shaft member 41 passing through the through hole 53. A nut 45 screwed to the lower end of the shaft member 41 is used to prevent it from coming off, and a bolt 59a is tightened into a screw hole penetrating from the outer peripheral surface of the lifting piece member 51 toward the center to form the outer periphery of the shaft member 41. It is attached to the shaft member 41 in a state in which the rotation around the shaft is restricted by pressing the flat portion 41f with the tip of the bolt. The shaft member 41 has a lifting piece member such that the positioning portion 57 of the lifting piece member 51 is inserted into the lower connection portion 11b and the stepped portion 55a of the support portion 55 is pressed against the lower end of the lower connection portion 11b. 51 is suspended and supported. That is, as shown in FIG. 1, the nut 39 of the support member 31 is screwed into the upper male screw portion 43 of the shaft member 41 so as to be in such a suspended support state.

<About the lifting mechanism 23>
The raising mechanism 23 that raises the lifting piece member 51 rotates the nut 39 that is the female screw threaded hole portion of the support member 31, so that the shaft member 41 that is screwed into the nut 39 rises and follows it. The pulling piece member 51 attached to the lower portion of the shaft member 41 is raised. The lifting piece member 51 is pressed against the lower end of the lower connection portion 11 b of the sovent joint 11, and the weight of the sovent joint 11 applied to the shaft member 41 through the lifting piece member 51 is the upper male screw portion of the shaft member 41. Since the frictional force between the nut 43 and the nut 39 is superior, the shaft member 41 does not rotate following the nut 39 even when the nut 39 is rotated. Therefore, by rotating the nut 39 on the spot, the shaft member 41 is guided upward by the fitting of the screw groove of the upper male screw portion 43 of the shaft member 41 and the screw groove of the nut 39. Therefore, for example, by turning the nut 39 using a tool such as a ratchet wrench or a spanner, the lifting piece member 51 can be raised together with the shaft member 41 as shown in FIG.

  The pulling jig 21 having such a configuration can be lifted while rotating the nut 39 to raise the pulling piece member 51 and supporting the lower end of the sovent joint 11 from below with the pulling piece member 51. The lifting joint 11 is peeled off from the floor slab S by the pulling force, and can be pulled out. In the present embodiment, the lifting distance of the lifting piece member 51 by the lifting mechanism 23 is a distance that allows the entire length of the sovent joint 11 to be pulled out from the floor slab S. That is, the upper male screw portion 43 of the shaft member 41 is provided in a range in which at least the entire length of the sovent joint 11 can be lifted by a distance that can be pulled out from the floor slab S. Further, the support member 31 is held at a height position at which the support portion 33b does not interfere with the sovent joint 11 until at least the entire length of the sovent joint 11 is pulled out from the floor slab S. Moreover, when the upper connection part 11c (refer FIG. 13) of the sovent joint 11 becomes the hindrance of the raise of the shaft member 41, it is desirable to cut out the upper connection part 11c previously.

  According to such an extraction jig 21, the lower end of the sovent joint 11 is supported from below by the lifting piece member 51 supported by being suspended from the shaft member 41, so that it is difficult to grip from the outside like the sovent joint 11. Even a drainage piping member having a shape can be pulled up. Therefore, the lifting joint 11 can peel the sovent joint 11 from the floor slab S, and the sovent joint 11 can be pulled out from the floor slab S without destroying the floor slab S.

In the first embodiment, various other modifications can be considered.
For example, the nut 39 for raising the lifting piece member 51 is not limited to a so-called hex nut. For example, a so-called quick nut that can be inserted without rotation to the vicinity of a predetermined screwing position with respect to the shaft member 41 or a divided nut piece that is divided and formed around the shaft is connected and tightened near the predetermined screwing position. A split nut that can be used can also be used. If these are used, in assembling and installing the extraction jig 21, the operation of screwing the nut into the vicinity of the initial screwing position on the shaft member 41 is omitted, and this is preferable in that the operation time can be shortened.
Further, the nut 39 is not limited to one that is rotated with a tool. If a portion that can be gripped and rotated by the nut 39 itself is provided, the rotation operation can be performed without using a tool. One example thereof will be described later as a first modification.
Further, the drainage piping member to be pulled out from the floor slab S is not limited to the vent joint 11, but can be various piping members disposed through the floor slab S. For example, a drainage trap illustrated as modification 2 later, a drainage pipe joint of a form different from the sovent joint 11 illustrated as modification 3, or a piping member such as a drainage pipe or a socket connecting the drainage pipe joints is also subject to extraction. can do.
Further, the lifting mechanism 23 of the first embodiment is configured to move the shaft member 41 upward by rotating the nut 39 which is the female screw threaded hole portion of the support member 31, but is not limited thereto. It is good also as a structure which fixes and provides a female screw screw hole part in the support member 31, and rotates the shaft member 41 by rotating. The female screw threaded hole portion can be provided by being fixed to the support member 31 by, for example, fixing a nut to the support member 31 or forming a female screw in the through hole 37.

[Modification 1]
Modification 1 will be described with reference to FIG. The first modification is an embodiment of the present invention, and is an embodiment in which only a part of the first embodiment is changed. Portions that do not need to be changed from the above embodiment are denoted by the same reference numerals in the drawings, and detailed description thereof is omitted.

  In the first modification, a nut 38 provided with handles 38a, 38a extending outward on the outer periphery is used as the female screw threaded hole portion of the support member 31. Therefore, by operating the handles 38a, 38a, the nut 38 can be rotated to lift the lifting piece member 51 without using a tool, and the sovent joint 11 can be pulled out.

[Modification 2]
Modification 2 will be described with reference to FIGS. The modified example 2 is an embodiment of the present invention, in which the drain trap 13 embedded in the floor slab S is pulled out by the pulling jig 21 of the first embodiment. Portions that do not need to be changed from the above embodiment are denoted by the same reference numerals in the drawings, and detailed description thereof is omitted.

  The drain trap 13 is a drain trap called a one trap or a trap drain trap. As shown in FIG. 5, the container-shaped main body is embedded in the floor slab S, and the upper opening 13a is formed in the floor slab S. The lower connecting portion 13b to which the drain pipe is connected is flush with the lower surface of the floor slab S. When the drain trap 13 is pulled out from the floor slab S, a strainer (not shown) and a trap (not shown) are removed, and the upper opening 13a and the lower connecting portion 13b are in a linear communication state in the vertical direction. The Then, the shaft member 41 penetrates the upper opening 13a and the lower connection portion 13b, and the lifting piece member 51 is suspended and supported as pressed against the lower end of the lower connection portion 13b. Next, as shown in FIG. 6, the drain trap 13 can be pulled out from the floor slab S by rotating the nut 39 to raise the lifting piece member 51. Thus, according to the extraction jig | tool 21, even if the piping member does not protrude from the floor slab S, it can be extracted. 5 and 6 exemplify a state in which the support member 31 is held at the lowest height position by maximizing the screwing amount of the adjusting bolt 35a constituting the height adjustment mechanism 35 of the support member 31. did. The drain trap 13 has a relatively small vertical dimension, and the lifting distance of the lifting piece member 51 required for complete extraction from the floor slab S is short. Therefore, the drain trap 13 can be extracted even if the support member 31 is relatively low. .

[Modification 3]
A third modification will be described with reference to FIGS. The third modified example is an embodiment of the present invention, and is an embodiment in which the drainage pipe joint 15 having a form different from that of the vent joint 11 is pulled out from the floor slab S by the pulling jig 21 in the first embodiment.

  In the drainage pipe joint 15, an upper connection part 15 a related to the connection with the drainage stack on the upper floor and a lower connection part 15 b related to the connection with the drainage stack on the lower floor are arranged coaxially, and around the trunk A plurality of horizontal branch pipe connecting portions 15c are provided. The drain pipe joint 15 is fixed to the floor slab S in a state of passing through the floor slab S. When the drainage pipe joint 15 is pulled out from the floor slab S, as shown in FIG. 7, the shaft member 41 passes through the upper opening 15a and the lower connection portion 15b, and the lifting piece member 51 is connected to the lower connection portion 15b. Let it be the state which is suspended and supported as the state pressed against the lower end. Next, the nut 39 is rotated to raise the lifting piece member 51 (see FIG. 8). Thereby, the drainage pipe joint 15 can be supported and pulled up from below by the lifting piece member 51, and the drainage pipe joint 15 can be pulled out from the floor slab S.

[Embodiment 2]
Another embodiment of the present invention will be described with reference to FIGS. The present embodiment is an example of an embodiment in which an existing Sovent joint 11 embedded in the floor slab S is pulled out. Since the configuration of the sovent joint 11 is the same as that of the first embodiment, detailed description thereof is omitted.

  As shown in FIG. 9, the extraction jig 61 of the present embodiment includes a support member 71, a shaft member 81, a lifting piece member 91, and a lifting mechanism 63 that raises the lifting piece member 91 along the shaft member 81. And an impact wrench 65 as a vibration means capable of giving a slight vibration to the shaft member 81. First, each member which comprises this extraction jig | tool 61 is demonstrated.

<About support member 71>
The support member 71 includes a main body 73 that is erected on the floor slab S. The main body 73 has a pair of leg portions 73a and 73a that are spaced apart from each other and a horizontal support portion 73b that connects the upper ends of the leg portions 73a and 73a, and has a gate shape as a whole. A vertical through hole 77 into which the shaft member 81 can be inserted is formed in the center of the support portion 73b. As will be described in detail later, the shaft member 81 is supported by the support member 71 so as to be able to idle around the shaft while being inserted into the through hole 77. In addition, height adjustment mechanisms 75 and 75 are provided below the leg portions 73a and 73a. Since the configuration is the same as that of the height adjustment mechanism 35 of the first embodiment, detailed description thereof is omitted.

<About shaft member 81>
The shaft member 81 is vertically supported by the support member 71 with its upper portion inserted through the through hole 77 of the support portion 73 b of the support member 71. As shown in FIG. 11, a male screw 81 c is formed on the upper portion of the shaft member 81, and nuts 79 a and 79 b are tightened at the upper and lower positions across the through hole 77, and are removed from the through hole 77. It is stopped and supported by the support member 71. No thread groove is formed in the through hole 77, and the shaft member 81 can idle around the shaft with respect to the through hole 77. Thrust bearings 80a and 80b are interposed between the nuts 79a and 79b and the support portion 73b. When the shaft member 81 is rotated around the axis, the nuts 79a and 79b follow the shaft member 81 and are also moved. By rotating, the shaft member 81 can idle while maintaining the height position.

As shown in FIG. 9, the shaft member 81 has a male screw formed in the lower part thereof. A portion where the male screw is formed is referred to as a lower male screw portion 83. The lower male screw portion 83 is formed to be long in the axial direction, and is screwed into the lifting piece member 91 so as to be relatively movable in the axial direction, and supports the lifting piece member 91 in a suspended manner.
In the present embodiment, the two rod-shaped members 81 a and 81 b are connected by the connecting tool 82 to form one shaft member 81.

<About the pulling piece member 91>
As shown in FIG. 12, the lifting piece member 91 has a shape in which substantially disk-shaped portions having different diameters are concentrically stacked one above the other, and a relatively large-diameter support portion 95 and a single piece thereon. A positioning portion 97 having a relatively small diameter is formed, and a step portion 95 a is formed on the periphery of the upper surface of the support portion 95. The outer shape of the support portion 95 is formed in a flat cylindrical shape that is larger than the inner diameter α of the lower connection portion 11b of the sovent joint 11 and smaller than the outer diameter β of the lower connection portion 11b. The outer shape of the positioning portion 97 is smaller than the inner diameter α of the lower connection portion 11b of the sovent joint 11, and can be inserted into the lower connection portion 11b. The positioning portion 97 has a tapered shape that gently narrows upward, and the tapered shape can guide the insertion into the lower connection portion 11b.

  A through hole is provided at the center of the pulling piece member 91, and a screw groove is cut on the inner surface to form a female screw. A portion 93 where the female screw is formed is referred to as a female screw screw hole portion. The female screw screw hole portion 93 is screwed to the lower male screw portion 83 of the shaft member 81 so as to be able to advance and retreat, whereby the lifting piece member 91 is supported by being suspended from the shaft member 81. The lifting piece member 91 has a lower male screw portion 83 of the shaft member 81 until the positioning portion 97 is inserted into the lower connection portion 11b of the sovent joint 11 and the step portion 95a of the support portion 95 is pressed against the lower end of the lower connection portion 11b. Screwed into.

<About the lifting mechanism 63>
The raising mechanism 63 that raises the lifting piece member 91 has a structure in which the lifting piece member 91 rises along the shaft member 81 by rotating the shaft member 81 around the axis. The lifting piece member 91 is pressed against the lower end of the lower connection portion 11 b of the sovent joint 11. Since the frictional force with the screw part 83 is superior, even if the shaft member 81 is rotated around the axis, the lifting piece member 91 does not follow the shaft member 81 and rotates. Then, only the shaft member 81 rotates, so that the lifting piece member 91 is moved upward by fitting the lower male screw portion 83 of the shaft member 81 and the screw groove of the female screw screw hole portion 93 of the lifting piece member 91. Guided.

<About the vibration means>
The impact wrench 65 as a vibration means can rotate the shaft member 81 while giving a slight vibration to the shaft member 81, and can be raised while slightly vibrating the pulling piece member 91.

  The pulling jig 61 having such a configuration rotates the shaft member 81 with the impact wrench 65 to raise the pulling piece member 91, thereby supporting the lower end of the sovent joint 11 from below with the pulling piece member 91 and giving a slight vibration. You can pull up. The lifting joint 11 is peeled off from the floor slab S by the pulling force, and can be pulled out. In this embodiment, the lower male screw portion 83 of the shaft member 81 is within a range in which the lifting piece member 91 can be moved upward by a distance that allows at least the entire length of the sovent joint 11 to be pulled out from the floor slab S. Is provided. Accordingly, the entire length of the sovent joint 11 can be pulled out from the floor slab S (see FIG. 10).

  According to such a drawing jig 61, the lower end of the sovent joint 11 is supported from below by the lifting piece member 91 supported by being suspended from the shaft member 81, so that it is difficult to grip from the outside like the sovent joint 11. A force in the pulling direction can be efficiently applied to the drainage piping member having a shape. Furthermore, the impact wrench 65 allows the lift piece 91 to be lifted while giving a slight vibration, so that the lift joint 11 can be lifted while being slightly vibrated, and the lift joint 11 can be pulled off the floor slab S more easily. Can be possible.

The second embodiment can be modified in various ways.
For example, also in the second embodiment, the drainage piping member to be pulled out from the extraction jig 61 floor slab S is not limited to the sorbent joint 11 but includes various piping members disposed through the floor slab S. It can be. For example, a drainage trap, a drainage pipe joint of a form different from the sovent joint 11, or a piping member such as a drainage pipe or a socket connecting the drainage pipe joints can be taken out.

11 Drainage pipe joint (Sovent joint)
11b Lower connection part 13 Drain trap 15 Drain pipe joint 21 Extraction jig 23 Lifting mechanism 31 Support member 33b Support part 37 Through hole 38 Nut (female screw screw hole part)
38a, 38a Handle 39 Nut (female screw screw hole part)
40 Thrust bearing 41 Shaft member 43 Upper male screw part 45 Nut 51 Piece member 55a Step part 61 Pulling jig 63 Lifting mechanism 65 Impact wrench (vibration means)
71 Support member 73b Support part 77 Through hole 79a, 79b Nut 80a, 80b Thrust bearing 81 Shaft member 81c Male screw 83 Lower male screw part 91 Piece member 93 Female screw screw hole part 95a Step S Floor slab

Claims (1)

A drainage piping member extraction jig for removing drainage piping members embedded in the floor slab from the floor slab,
A lifting piece member disposed below the drainage piping member, a shaft member penetrating the draining piping member and supporting the lifting piece member in a suspended manner, and supporting the shaft member on the upper side of the floor slab A support member, and a raising mechanism that raises the lifting piece in the axial direction of the shaft member,
The lifting piece member is formed larger than the inner diameter of the lower end of the drainage piping member, and is configured to be able to support the lower end of the drainage piping member from below, and the lower end of the drainage piping member from below. A drainage piping member extraction jig, wherein the drainage piping member is supported by the lifting piece member and lifted by the lifting mechanism to lift and drain the drainage piping member from the floor slab.

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