JP5389466B2 - Drainage pipe support jig - Google Patents

Description

  The present invention relates to a drainage pipe support jig used when a drainage pipe of a drainage facility in an apartment house is cut and removed.

An example of drainage facilities in an apartment house is described in Patent Document 1.
As shown in FIG. 7, the drainage facility described in Patent Document 1 includes drainage pipe joints 110 that are installed on each floor through a concrete slab CS that partitions an upper floor and a lower floor of an apartment house. The drainage pipe joint 110 is a joint that joins the drainage led by the drainage stack 102 on the upper floor and the drainage branch pipe 103 and flows into the drainage stack 102 on the lower floor, and the trunk portion 111 thereof is a concrete slab CS. It is fixed with backfill mortar M or the like while being passed through the through-hole CH.
The drainage stack 102 is provided with an upper receiving port 102u, and the lower end straight pipe portion 115 of the drainage pipe joint 110 on the upper floor is inserted and connected to the upper receiving port 102u. Further, the lower end insertion port of the drainage stack 102 is inserted and connected to the upper receiving port 112 of the drainage pipe joint 110 on the lower floor.
In the above-described drainage facility, for example, when clogging or breakage occurs in the drainage stack 102 on the way, and it is desired to update only the drainage stack 102 in that portion, it is necessary to cut and remove the drainage stack 102. .
When the drainage stack 102 is cut and removed, another worker uses a saw or the like to hold the drainage stand in a state where one of the workers presses above the cutting portion (see the dotted line) of the drainage stack 102. It is common to cut the tube 102.

JP 2006-22581 A

  If the cutting work of the drainage stack 102 is performed by one person, the upper receiving port 102u of the drainage stack piece positioned above the cutting part at the time of cutting the drainage stack 102 is under its own weight and the drainage pipe joint 110 of the upper floor. There is a possibility that the drainage standpipe piece falls out from the lower end straight pipe portion 115 and falls. For this reason, it is difficult for one person to perform the cutting work of the drainage stack 102 safely.

  The present invention has been made to solve the above problems, and a technical problem of the present invention is to enable one person to safely perform a cutting operation of a drain pipe of a drainage facility.

The above-described problems are solved by the inventions of the claims.
The invention of claim 1 is a drainage pipe support jig used when cutting and removing a drainage pipe of a drainage facility in an apartment house, and is attached to a pipe outer peripheral surface upstream from a cut portion of the drainage pipe, An upstream fixing part configured to be removable, a downstream fixing part configured to be removable and configured to be attached to a pipe outer peripheral surface downstream from the cutting portion of the drain pipe, and the upstream fixing part and the downstream fixing. It has a connection part which connects a part in the state where relative movement is impossible.

According to the present invention, for example, when cutting the drainage stack, the upstream fixing portion is attached to the pipe outer peripheral surface above the cutting portion of the drainage stack, and the downstream fixing portion is connected to the pipe outer periphery below the cutting portion. Install on the surface. In this state, when the cutting part of the drainage standpipe is cut, the drainage standpipe piece located above the cutting part and the drainage standpipe piece located below are connected by the connecting part of the drainage pipe support jig Retained. That is, even if the cutting part of the drainage stack is cut, the drainage stack is held in the original posture by the function of the drainage pipe support jig. Therefore, when the drainage stack is cut, for example, there is no problem that the upper drainage stack piece drops due to gravity. This makes it possible for one person to safely cut the drainage stack of the drainage facility.
Then, the upper drainage stand piece can be removed by removing the upstream fixing portion from the upper drainage stand piece after the drainage stand is cut. Furthermore, the lower end insertion port of the lower drainage stack piece can be pulled out from the upper receiving port of the drainage pipe joint on the floor using the drainage pipe support jig.

  According to the second aspect of the present invention, the upstream side fixing portion and the downstream side fixing portion are a pair of semicircular members that surround the pipe outer circumferential surface in the circumferential direction, and one end of these semicircular members can be relatively rotated. A hinge mechanism to be connected, and a fastening mechanism operable to connect the other ends of the semicircular members to each other and move the other ends closer to each other in this state, By operating in the direction in which the other ends of the members approach each other, the pair of semicircular members are configured to be fastened to the outer peripheral surface of the tube by tightening the outer peripheral surface of the tube from the outside in the radial direction.

According to the invention of claim 3, the tightening mechanism includes a receiving portion fixed to an end portion of one semicircular member, a lever portion that is rotatably connected to an end portion of the other semicircular member, A band portion connected to the lever portion and configured to be engageable with the receiving portion, and the lever portion is rotated in a tightening direction in a state where the band portion is engaged with the receiving portion. By doing so, the end portion of one semicircular member and the end portion of the other semicircular member are configured to approach each other.
That is, by rotating the lever portion, it is possible to approach and separate the end portion of one semicircular member and the end portion of the other semicircular member with one touch.

  According to the present invention, it is possible to safely perform the work of cutting the drain pipe of the drainage facility alone.

It is a whole perspective view of the drainage pipe support jig which concerns on Embodiment 1 of this invention. It is a side view of the drainage pipe support jig. It is a top view (A figure) (B figure) of the support jig for drainage pipes. It is a side view (A figure) (B figure) (C figure) showing the usage method of the said support jig for drain pipes. It is the front view (A figure) and side view (B figure) of the drainage pipe support jig which concern on Embodiment 2 of this invention. It is a top view (A figure) (B figure) of the support jig for drainage pipes. It is a side view showing the conventional drainage equipment.

[Embodiment 1]
Hereinafter, the drainage pipe support jig according to Embodiment 1 of the present invention will be described with reference to FIGS.
<About the drainage pipe support jig 30>
The drainage pipe support jig 30 according to this embodiment is a jig used when the drainage stack 12 of the drainage facility 10 (see FIG. 4A) in the apartment house is cut and removed. As shown in FIGS. 1 to 3, the drainage pipe support jig 30 includes an upstream side fixing portion 33, a downstream side fixing portion 35, and a connecting portion 37.
The upstream side fixing portion 33 is configured to be attached to and detached from the pipe outer peripheral surface 12r on the upstream side (upper side) of the cut portion C of the drainage stack 12 (see FIG. 4). Further, the downstream side fixing portion 35 is configured to be attached to and detached from the pipe outer peripheral surface 12r on the downstream side (lower side) of the cut portion C of the drainage stack 12. Here, since the upstream side fixing portion 33 and the downstream side fixing portion 35 have the same configuration, the configuration of the upstream side fixing portion 33 will be described as a representative, and the description of the configuration of the downstream side fixing portion 35 will be omitted.

<Upstream side fixing part 33>
As shown in FIGS. 3A and 3B, the upstream side fixing portion 33 is a pair of semicircular members 331 that surround the pipe outer peripheral surface 12r (see FIG. 4A) of the drainage stack 12 in the circumferential direction. 332 is provided. The semicircular members 331 and 332 are formed, for example, by bending steel strips into a semicircular shape, and the semicircular polar radius is set substantially equal to the radial dimension of the drainage stack 12. The base end portion of one semicircular member 331 and the base end portion of the other semicircular member 332 are connected by a hinge mechanism 34 so as to be relatively rotatable. Accordingly, the pair of semicircular members 331 and 332 are formed in an annular shape as shown in FIG. 3A to surround the outer peripheral surface 12r of the drainage stack 12, or as shown in FIG. 3B. The circular members 331 and 332 can be opened.

Further, the tip end portion of one semicircular member 331 and the tip end portion of the other semicircular member 332 are each bent by approximately 90 ° radially outward, and the bent tip portions 331s and 332s are rectangular flat plates. It is formed in a shape. A bolt hole (not shown) is formed in the center of the tip portion 331s (hereinafter referred to as a flat plate portion 331s) of one semicircular member 331, and a nut 331n is coaxial with the bolt hole on the back side of the flat plate portion 331s. Is fixed by welding. The flat plate portion 332s of the other semicircular member 332 is formed with a through hole (not shown) in the center, and the butterfly bolt 332b can rotate about the axis of the through hole and be relatively relative to the axial direction. It is mounted in an immovable state. Therefore, by passing the butterfly bolt 332b of the other semicircular member 332 through the bolt hole of one semicircular member 331 and screwing it with the nut 331n, the flat plate portion 331s of the one semicircular member 331 and the other semicircular member The flat plate member 332 s of the member 332 is brought close to the pipe outer peripheral surface 12 r of the drainage stack 12, and the semicircular members 331 and 332 can tighten the pipe from the outside in the radial direction.
That is, the butterfly bolt 332b and the nut 331n correspond to the tightening mechanism of the present invention.

<About the connecting portion 37>
As shown in FIGS. 1 to 3, the distal end of the upper horizontal column 37 u of the connecting portion 37 is fixed to the base end portion of one semicircular member 331 in the upstream side fixing portion 33 by welding. Similarly, the distal end of the lower horizontal column 37d of the connecting portion 37 is fixed to the base end portion of one semicircular member 351 in the downstream fixing portion 35 by welding.
The connecting portion 37 is a portion that connects the upstream side fixing portion 33 and the downstream side fixing portion 35 in a state in which relative movement is impossible. The connecting portion 37 is a rectangular tube-shaped column main body 37m extending in the vertical direction, an upper horizontal column 37u protruding in the horizontal direction from the upper end of the column main body 37m, and protruding in the horizontal direction from the lower end of the column main body 37m. It is formed in a substantially U shape by the lower lateral support 37d. The connecting portion 37 is formed with a strength that can withstand the weight of the drainage stack 12 when the entire weight of the drainage stack 12 is added to the upstream fixing portion 33 and the downstream fixing portion 35. Further, the height of the connecting portion 37 is such that the operator can use the saw with sufficient margin between the upstream side fixing portion 33 and the downstream side fixing portion 35 when cutting the drainage stack 12. Is set.

<How to use the drainage pipe support jig 30>
Next, based on FIG. 4 (A)-(B), the usage method of the above-mentioned drainage pipe support jig 30 is demonstrated.
First, as shown in FIG. 1, the butterfly bolt 332b of the upstream side fixing portion 33 of the drainage pipe support jig 30 is removed from the nut 331n, so that one of the semicircular members 331 and the other semicircular member 332 can be opened. . Similarly, the butterfly bolt 352b of the downstream side fixing portion 35 is removed from the nut 351n so that the one semicircular member 351 and the other semicircular member 352 can be opened.
Next, the pair of semicircular members 351 and 352 of the downstream side fixing portion 35 are attached to the pipe outer peripheral surface 12r below the cutting portion C of the drainage stack 12 as shown in FIG. That is, the pair of semicircular members 351 and 352 are formed in an annular shape to surround the pipe outer peripheral surface 12r, and the butterfly bolt 352b attached to the semicircular members 351 and 352 and the nut 351n are screwed together. Thereby, the pipe outer peripheral surface 12r is clamped from the outer side in the radial direction by the semicircular members 351 and 352, and the downstream fixing portion 35 is attached to the pipe outer peripheral surface 12r below the cutting portion C of the drainage stack 12. Similarly, the pair of semicircular members 331 and 332 of the upstream side fixing portion 33 are attached to the pipe outer peripheral surface 12r above the cutting site C of the drainage stack 12.
The upstream fixing portion 33 can be attached to the outer peripheral surface 12r of the drainage stack 12 before the downstream fixing portion 35.

Thus, after attaching the drainage pipe support jig 30 to the drainage stack 12, the cutting part C of the drainage stack 12 is cut with a saw. Even after the cutting portion C is cut, the drainage stacking piece 12u positioned above the cutting portion C and the drainage stacking piece 12d located below are held in a connected state by the drainage pipe support jig 30. ing. That is, even if the cutting part C of the drainage stack 12 is cut, the drainage stack 12 is held in the original posture.
Next, the butterfly bolt 332b of the upstream fixing portion 33 is removed from the nut 331n, the pair of semicircular members 331 and 332 are made openable, and are removed from the pipe outer peripheral surface 12r of the upper drainage stack piece 12u. Then, as shown in FIG. 4B, the receptacle socket 14 of the upper drainage stack piece 12u is pulled out from the lower end straight pipe portion 24 of the drainage pipe joint 20 on the upper floor, and the upper drainage stack piece 12u is removed. To do.
At this time, if the seal portion between the receptacle socket 14 of the drainage stack piece 12u and the lower straight pipe portion 24 of the drainage pipe joint 20 on the upper floor is fixed due to secular change and pulling is difficult, FIG. B) As shown by the two-dot chain line, the drainage pipe support jig 30 is reattached to the upper drainage stack pipe piece 12u, and the upper drainage stack pipe piece 12u is pulled out by holding the connecting portion 37 of the drainage pipe support jig 30. Like that.
Then, after removing the upper drainage stand piece 12u, next, the lower end insertion port of the lower drainage stand piece 12d is pulled out from the upper receiving port 22 of the drainage pipe joint 20 on the lower floor, and the lower drainage stand is provided. The tube piece 12d is removed.

Here, when it is difficult to pull out the lower end insertion port of the lower drainage stack 12d from the upper receiving port 22 of the drainage pipe joint 20 on the lower floor, as shown in FIG. The drainage pipe support jig 30 is reattached to the central position of the pipe piece 12d, and the lower drainage pipe piece 12d is pulled out by holding the connecting portion 37 of the drainage pipe support jig 30.
In this way, by holding the connecting portion 37 of the drainage pipe support jig 30 and pulling out the drainage stack pipe pieces 12u, 12d, for example, the seal part between the drainage pipe joint pieces 12u, 12d and the drainage pipe joint 20 is aged. Even when it is fixed due to the change, the drainage stack pieces 12u and 12d can be lifted and pulled down, and can be easily rotated, shaken, and the like, and the efficiency of the drawing work is improved.

<Advantages of drainage pipe support jig 30 according to the present embodiment>
According to the drainage pipe support jig 30 according to the present embodiment, the upstream fixing portion 33 is attached to the pipe outer peripheral surface 12r above the cutting portion C of the drainage stack 12, and the downstream fixing portion 35 is below the cutting portion C. When the cutting part C is cut in a state of being attached to the pipe outer peripheral surface 12r, the drainage stack piece 12u located above the cutting part C and the drainage stack piece 12d located below are connected to each other. Retained. That is, even if the cutting part C of the drainage stack 12 is cut, the drainage stack 12 is held in its original posture by the function of the drainage pipe support jig 30. Therefore, when the drainage stack 12 is cut, for example, there is no problem that the upper drainage stack piece 12u falls due to gravity. Thereby, the cutting operation of the drainage stack 12 of the drainage facility can be safely performed by one person.
Then, the upper drainage stack piece 12u can be removed by removing the upstream fixing portion 33 from the upper drainage stack piece 12u after the drainage stack 12 is cut. Furthermore, using the drainage pipe support jig 30, the lower end insertion port of the lower drainage stack piece 12d can be pulled out from the upper receiving port 22 of the drainage pipe joint 20 on the floor.
Further, in the process of cutting the cutting portion C of the drainage stack 12 with the saw, the weight of the upper drainage stack piece 12u is not added to the saw, so that the cutting portion C can be easily cut.

[Embodiment 2]
Hereinafter, the drainage pipe support jig according to Embodiment 2 of the present invention will be described with reference to FIGS. 5 and 6.
The drainage pipe support jig according to the second embodiment is a one-touch operation of the fastening mechanism (the butterfly bolts 332b and 352b and the nuts 331n and 351n) in the upstream side fixing part 33 and the downstream side fixing part 35 of the drainage pipe support jig 30 according to the first embodiment. The mechanism has been improved so that it can be tightened and unfastened. In addition, since it is the same as that of the support tool 30 for drainage pipes concerning Embodiment 1 about another structure, the same number is attached | subjected and description is abbreviate | omitted.
As shown in FIG. 6 and the like, the tightening mechanism of the drainage pipe support jig according to the present embodiment is formed at the mechanism main body 40 fixed to the tip of one semicircular member 331 and the tip of the other semicircular member 332. And a receiving portion 48 having a U-shaped cross section.

The mechanism main body 40 includes a base 41 fixed to the tip of one semicircular member 331 as shown in FIG. A connecting pin 42 extending in the width direction (axial direction) of the semicircular member 331 is provided at the distal end of the base 41, and the base end portion of the lever portion 44 rotates with respect to the base 41 via the connecting pin 42. It is linked in a movable state. That is, as shown in FIG. 6B, the lever portion 44 can rotate around the connecting pin 42 between a standing position standing up with respect to the base 41 and a lying position covering the base 41. It is configured as follows.
A pair of upper and lower fitting holes 44k are formed at positions closer to the center at both upper and lower ends (the front side and the back side in FIG. 6B) of the lever portion 44. The pair of upper and lower fitting holes 44k are formed so that the axial center thereof is parallel to the connecting pin 42, and the pin-like base end portion of the band portion 45 formed in the fitting hole 44k in a substantially U shape ( (Not shown) are fitted in a rotatable state. Further, a hook portion 45 x that is hung on a receiving portion 48 formed at the tip of the other semicircular member 332 is formed at the tip portion of the band portion 45 in parallel with the connecting pin 42.

  6B, the band portion 45 (hanging portion 45x) of the mechanism main body 40 fixed to one semicircular member 331 is hung on the receiving portion 48 of the other semicircular member 332 in the state shown in FIG. By rotating the lever portion 44 of the mechanism main body portion 40 to the lying down position, the tip end portion of the other semicircular member 332 is attracted to the tip end portion of the other semicircular member 331 as shown in FIG. be able to. That is, the upstream side fixing portion 33 and the like can be attached to the outer peripheral surface 12r of the drainage stack 12 with one touch by operating the lever portion 44. Further, by rotating the lever portion 44 to the standing position with respect to the base 41, the tip end portion of the other semicircular member 332 is separated from the tip end portion of the one semicircular member 331, and the hook portion 45x of the band portion 45 is received. Part 48 can be removed. That is, by operating the lever portion 44, the upstream side fixing portion 33 and the like can be detached from the outer peripheral surface 12r of the drainage stack 12 with one touch.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the drainage pipe support jig 30 according to the first and second embodiments, the example in which the upstream fixing portion 33 and the like are configured by the pair of semicircular members 331 and 332 and the hinge mechanism 34 has been described. Instead of the hinge mechanism 34, it is also possible to use a substantially C-shaped annular member having flexibility.
Moreover, in Embodiment 1, 2, although the example which uses the support jig 30 for drainage pipes which concerns on this invention for the cutting | disconnection and removal of the drainage stack 12 was shown, cutting | disconnection of the drainage horizontal branch pipe etc. which are used in a high place It is also possible to use the drainage pipe support jig 30 according to the present invention for removal.

10: Drainage system 12: Drainage stack (drainage pipe)
12r ... · pipe outer peripheral surface 12u · · · upper drainage stand piece 12d · · · lower drainage stand piece 30 · · · drainage pipe support jig 33 · · · upstream fixed Part 331... Semicircle member 332... Semicircle member 331 n... Nut (tightening mechanism)
332b ... Butterfly bolt (tightening mechanism)
C ··· Cutting section 34 ··· Hinge mechanism 35 ··· Downstream side fixing portion 37 ··· Connection portion 44 ··· Lever portion (tightening mechanism)
45 ...... Band part (tightening mechanism)
48 ... Receiving part (tightening mechanism)

Claims (3)

A drainage pipe support jig used when cutting and removing a drainage pipe of a drainage facility in an apartment house,
An upstream fixing portion that is configured to be attached to and removable from a pipe outer peripheral surface upstream from a cutting site of the drain pipe,
A downstream fixing portion that is configured to be attached to and removable from a pipe outer peripheral surface downstream of the drainage pipe cutting site;
A connecting part for connecting the upstream side fixing part and the downstream side fixing part in a state in which relative movement is impossible;
A drainage pipe support jig characterized by comprising: The drainage pipe support jig according to claim 1,
The upstream fixing portion and the downstream fixing portion are a pair of semicircular members surrounding the pipe outer circumferential surface in the circumferential direction, and a hinge mechanism that connects one end of these semicircular members in a relatively rotatable state, A fastening mechanism operable to connect the other ends of the semicircular members to each other and move the other ends closer to each other in that state;
When the tightening mechanism operates in a direction in which the other ends of the semicircular members are brought closer to each other, the pair of semicircular members are attached to the outer peripheral surface of the tube by tightening the outer peripheral surface of the tube from the outside in the radial direction. A drainage pipe support jig . A drainage pipe support jig according to claim 2,
The tightening mechanism includes a receiving portion fixed to an end portion of one semicircular member, a lever portion that is rotatably connected to an end portion of the other semicircular member, and a lever portion connected to the lever portion. A band portion configured to be engageable with the receiving portion,
With the band part engaged with the receiving part, the lever part is rotated in the tightening direction so that the end part of one semicircular member and the end part of the other semicircular member approach each other. A drainage pipe support jig characterized by comprising:

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