JPH04176921A - Terminal processing jig for slab embedding pipe - Google Patents

Abstract

PURPOSE:To facilitate connection forming a horizontal containing part to contain the front part of a pipe terminal part approximately in a horizontal state and an introduction space part with an inclining bottom, and increasing the width of the horizontal containing part to a value higher than the outside diameter of a connection part to connect the pipe terminal part. CONSTITUTION:The terminal part 31 of a sheath pipe laid on a floor foundation is inserted through an introduction port 2 in a casing body A, the tip of the terminal is brought into contact with a tip part 31 of a horizontal containing part 3, and anchor parts 5... are fixed to reinforcing bars to place concrete. During a through-piping work, a plate 1 is cut out, a sheath pipe terminal part is taken out from the casing body A, and an auxiliary sheath pipe is connected through a sleeve. A width W of a containing part 3 is increased to a value higher than the inside diameter of a sheath pipe connection part B to contain the connection part B in the containing part 3. When it can not be contained in the containing part, the connection part is supported to the upper opening of the containing part 3 to eliminate operation of a generating reaction force. This constitution facilitates connection without damaging breathability of the sheath pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an end treatment jig for slab-buried pipes used in the sheath pipe construction method.

(Conventional technology) In indoor piping construction, a sheath pipe is buried in the slab floor during construction of an A14 building, and during equipment construction later, water supply pipes, hot water supply pipes, and wiring are installed inside the sheath pipe. The so-called sheath pipe construction method is sometimes used, in which water pipes, electric wires, cables, etc. are brought in and equipment is installed and installed.

However, in the conventional sheath pipe burying method, the end part of the sheath pipe buried in the slab floor protrudes from the slab floor, and the protruding end part of the sheath pipe is buried immediately after the sheath pipe is buried until the water supply pipe is pulled in. It is unreasonable that it would interfere with other construction work and hinder the smooth progress of the construction work.

In order to eliminate such unreasonableness, as shown in Fig. 7A, the end of the sheath pipe laid on the reinforcing bars before slab casting is inserted into the elongated plastic box A' through the inlet 2'. This box A' is fixed to the reinforcing bar f' as shown in FIG.
The sealing plate 1' on the top surface of the box is flush with the upper surface of the slab, and when passing water pipes, etc., cut the sealing plate 1' at 1' with a knife or the like to open the top end of the box. It is known to take out the terminal part of the sheath pipe from the opening of the box, connect this terminal part and the auxiliary sheath pipe with a joint, and then pass the water pipe etc. (Japanese Patent Laid-Open No. 2-7)
No. 9709). In this construction method, in order to obtain a long enough end portion for smooth exchange when connecting with the auxiliary sheath pipe, a horizontal storage part 3' is provided in the box, and the depth of the sheath pipe buried in the slab is An introduction space 4' with an inclined bottom surface is provided so that the end portion of the sheath tube can be introduced easily into the horizontal housing part 3'.

(Problem to be Solved) However, the rlJ of the horizontal housing portion 3' is slightly larger than the diameter of the sheath tube, and as shown in FIG. and auxiliary sheath eI+
The connection part B' with the connection part B' does not fit inside the box A', and the connection part B'
The bending angle in the vicinity becomes large (becomes large), the sheath tube portion near the connection part B' warps upward, the sheath tube bends with a small curvature, and a decrease in tube passability is unavoidable.

In addition, when the sheath tube terminal part is raised and connected to a vertical auxiliary sheath tube, for example, the auxiliary sheath tube that is placed upright between the wall screen and the finished wall and the sheath tube terminal that is raised from the above-mentioned box A' are connected. Depending on the orientation of the wall, it may be necessary to stand up the end of the sheath at a certain angle from the axis of the sheath buried in the slab. When the angle becomes large, it becomes extremely difficult to start up the tube, and if the sheath tube is forced up, the sheath tube will be deformed and the passageability will be significantly reduced.

An object of the present invention is to provide an end processing jig for slab-embedded pipes that makes it possible to connect the end portion of the sheath pipe pulled out from the box to the auxiliary sheath pipe without impairing the passage of the sheath pipe. It is in.

(Means for Solving the Problems) The end treatment jig for slab-buried pipes according to the present invention is a box that is used by being inserted into the end of a pipe to be buried in a slab, and is buried in the slab together with the pipe, and by this burying. The openable sealing plate on the top surface of the box is flush with the top surface of the slab floor, and inside the box there is a horizontal storage section that accommodates the front part of the tube end section in an almost horizontal state, and a horizontal storage section that is deeper than this horizontal storage section. In the pipe end treatment tool for slab burying, which has an introduction space with an inclined bottom surface extending from the position to the height of the horizontal storage part, the width of the horizontal storage part is made wider than the outer diameter of the connection part connecting the pipe ends. It is a composition characterized by the following.

The end of the introduction space can be formed into a diverging space whose upper end has a diameter larger than rl of the horizontal accommodating part, and the horizontal accommodating part can be provided to protrude from the divergent space.

(Explanation of Examples) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a rear view, and FIG. 3 is a sectional view taken along line III--III in FIG. 1.

In Figs. 1 to 3, A is a box made of plastic (e.g., polyethylene, polyvinyl chloride, etc.), the upper end of which is sealed with a plate 1, for introducing the terminal part of the sheath pipe for slab embedding. It has a cylindrical introduction port 2.

The height from this introduction U12 to the sealing plate 1 is made equal to the slab embedding depth of the sheath tube, and therefore, as described later, the box A is flush with the upper surface of the slab floor on the upper surface of the sealing plate 1. It will be buried as follows. Reference numeral 3 designates a horizontal housing portion, and its rl w is made larger than the diameter of the sheath tube connection portion to accommodate the sheath tube connection portion, which will be described later.

It is desirable that the tip of the horizontal housing portion 3 has a tapered bottom surface 31. For connecting the sheath tubes, a sleeve method or a method of directly inserting them into each other can be used, and the width W of the horizontal housing part 1 is set according to this connection structure. This is the introduction space of the inclined bottom surface 41 leading to the opening. In this introduction space section 4, the end facing the horizontal accommodation section 3 is formed into a divergent space 42, and the diameter R of the divergent upper end is larger than the width W of the horizontal accommodation section 3.
protrudes from this wide space 42 at the end.

5, . . . are fastening portions provided integrally with the box A.

In order to bury the sheath pipe in the slab floor using the above-mentioned sheath pipe end processing tool during construction of the building frame, the end portion of the sheath pipe laid on the floor foundation of the reinforcing bar must be inserted into the inlet 2 in the box A. Insert it more,
The tip of the terminal is brought into contact with the tip 31 of the horizontal storage section 3. Next, the fastening part 5 of the box A. ... is fixed to the reinforcing steel,
A slab is placed so that the upper surface of the slab is flush with the plate 1 at the upper end of the box. Furthermore, during the water pipe passage work, the plays 1 to 1 at the upper end of the box A are cut open using a cutter or the like, and the sheath pipe end portion is taken out from the opened box A through the incision, and an auxiliary sheath is attached to this end portion. Connect the tubes by sleeves.

In the jig of the present invention, the width W of the horizontal storage portion 3 of the box A is
is larger than the outer diameter of the connecting part, for example, the outer diameter of the sleeve, so as shown in Figs. Horizontal storage part 3
If it cannot be accommodated, it is possible to eliminate the reaction force generated by supporting the upper end opening of the horizontal accommodating portion 3.

Therefore, even though the connected sheath pipe is bent due to the pinching corresponding to the level difference between the rear end of the horizontal housing section 3 (32 in Fig. 5) and the slab floor surface, Since the action of reaction force can be eliminated, it is possible to bend at a --like bending angle, and uneven bending can be eliminated.

If the tip of the horizontal housing part 3 of the jig is made to have an inclined bottom surface 31, the stress concentration that the connecting part B received in the horizontal housing part 3 at the step edge 310 shown by the dotted line in FIG. 5 can be alleviated. It's advantageous.

In the jig of the present invention, a widening space 42 can be provided, and in this case, as shown in FIG. Even when the sheath tube is raised in a direction C' different from that shown in FIG.

At this time, it is also possible to provide a space portion on the side of the sheath tube connection portion of the divergent space 42 that can accommodate the sheath tube connection portion or allow the sheath tube to swing from side to side.

Therefore, even if the sheath pipe is erected by connecting the auxiliary sheath pipe between the wall base and the finished wall on a wall that is oriented away from perpendicular to the axis of the slab-embedded sheath pipe, Good pipeability can be guaranteed.

(Effects of the Invention) The end treatment jig for slab-buried pipes according to the present invention has the above-described configuration, and the end portion of the sheath pipe, which has been housed in the slab-buried box until the time of pipe passage work, is placed in the box. The opening at the top makes it possible to take out the pipe from the box and connect this terminal to the auxiliary sheath pipe on the slab floor without causing uneven bending, which prevents the pipe passage work from interfering with other construction work up to that point. It can be done smoothly without any problems. In particular, when providing a widening space, there is an advantage that even if the direction in which the end of the sheath tube is raised deviates from the axial direction of the sheath tube buried in the slab, the end of the sheath tube can be raised without excessive bending. be.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a sectional view taken along III-III in Fig. 1, and Fig. 4 is a construction using the jig of the present invention. FIG. 5 is a sectional view taken along the line V-V in FIG. 4, and FIG. 6 is a plan view showing the connection part of the sheath tube taken out using the jig of the present invention. The plan view, FIG. 7A, FIG. 7B, and FIG. 7C are drawings showing each work step of a method for processing a sheath tube end using a conventional jig, and FIG. 7A is a perspective view; FIGS. 7B and 7C are cross-sectional views. A...Box, 1...Sealing plate, 2...Inlet, 3...Horizontal storage part, 4...Introduction space part, 41...
- Inclined bottom surface, 42... end wide space part. Patent applicant: Sekisui Chemical Co., Ltd. Representative: Kaoru Hirota

Claims (2)

[Claims] (1) A box that is used by being inserted into the end of a pipe that is buried in a slab.It is buried in the slab together with the pipe, and as a result of this embedding, the openable sealing plate on the top of the box is flush with the top of the slab. The inside of the box has a horizontal housing part that accommodates the front part of the tube end part in a substantially horizontal state, and an introduction space part with an inclined bottom surface extending from a position deeper than the horizontal housing part to the height of the horizontal housing part. 1. An end treatment jig for pipes buried in slabs, characterized in that the width of the horizontal accommodating part is wider than the outer diameter of the connecting part that connects the ends of the pipes. (2) In claim (1), the end of the introduction space is formed into a widening space whose upper end has a diameter larger than the width of the horizontal housing part, and the horizontal housing part is inserted from the widening space. An end treatment jig for slab-buried pipes characterized by a protruding structure.