JP2009243079A - Water stop machine of manhole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new water stop machine for a manhole which is installed by a caisson method and which eliminates the difficulty of attaching a flexible rubber joint when a drive pipe end is received by a side hole. <P>SOLUTION: The manhole is provided with the side hole and a blade for caisson installation at its lower end, and the side hole receives the drive pipe. A short cylindrical water-stop box body is attached on the outer surface of the side hole in an overhang state. Then a rubber ring for sealing, a pressure-resistant ring plate, and a shutter plate are pierced, tightened by a nut and are stored in the box body. The rubber ring for sealing has a temporary cover which can be stripped away, and the pressure-resistant ring plate prevents the external pressure of earth-and-sand water. The shutter plate blocks the side hole with possible removal. Then the interior of the side hole is opened so that the extension of the flexible rubber joint can be made possible. The blade for caisson installation at the lower part is projected and formed outside in the overhang part of the water stop. When the drive pipe end is received from the outside of the water-stop box body into the side hole, the rubber ring for sealing of the water stop machine of the manhole is brought into pressure contact with the surface of the drive pipe, thus water is sealed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water stop device for preventing water leakage at the time of laying a manhole and receiving it in a side hole at the end of a propulsion pipe.

There exists patent 3599394 as a water stop of this kind.
The gazette describes that a flange is assembled in a side hole of a manhole, and a water stop device in which a cover lid, a seal rubber plate, and a reinforcing plate for reinforcing the cover lid are arranged side by side so as not to protrude outward from the side hole is accommodated. is doing.
Japanese Patent No. 3599394

  However, since this publication provides a water stop in the side hole of the manhole, there is a problem that it is difficult to attach the flexible rubber joint when the propulsion pipe end is received by the side hole.

  The present invention eliminates the difficulty of mounting a flexible rubber joint by extending a water stop on the outside of a side hole of a manhole to open the side hole, and a rubber ring for sealing provided in the water stop By extending the inner end of the tube, it is possible to seal the water without a flexible rubber joint by expanding the pressure contact width that presses against the tube surface of the receiving propulsion tube. In addition to eliminating all of the problems in the above publication, the water stop device that has not been described in the publication has been improved significantly. It is to provide.

  According to the present invention, since the water stop is extended and formed outside the side hole of the manhole and the inside of the side hole is opened, the flexible rubber joint to be stretched between the receiving propulsion pipe can be attached without difficulty. Produces an effect.

  By alternating the blind holes of the shirter plate with the large loose holes, the shutter plate can be quickly removed with less than half of the nuts removed.

  By extending the inner end of the rubber ring for sealing to widen the pressure contact width between the front surface of the receiving propelling pipe and fastening with a band, water sealing can be satisfied without a flexible rubber joint. The effect is produced.

  The present invention relates to a water ring having a short cylindrical shape formed on the outer surface of a side hole of a manhole so that the inside of the side hole is opened for mounting a flexible rubber joint, and a rubber ring for sealing in the water stop By extending the inner end of the tube, the pressure contact width with the receiving propelling tube surface is expanded so that water sealing is possible even without a flexible rubber joint. This makes it possible to quickly remove the shirter plate by simply removing a few nuts. The latent blade at the lower end of the manhole protrudes outward in the overhanging portion of the water stop so as not to hinder the construction of the latent rod.

A first embodiment will be described below with reference to the drawings.
The manhole 1 to be laid is formed with a side hole 2 on the side wall, and a flanged housing 3 having the same diameter and an overhanging width of 50 mm is attached to the outside of the manhole 1 by anchor bolts 4.

  As shown in FIG. 1 and FIG. 2, a rubber ring 5 with a temporary lid 5a is provided in the flanged housing 3 from the outside, and a pressure-resistant wheel plate 6 that supports the rubber ring 5 in response to external earth and sand water pressure inside. , And the shutter plate 7 that closes the side surface hole 2 are fixed by being inserted with a plurality of inward bolts 8. Each inward bolt 8 is fixedly attached to a stop plate 9 attached to the inner surface of the housing 3 by welding a bolt head 8a. As shown in FIG. 3, the shutter plate 7 is formed by alternately forming nut stop holes 7a and large loose-fitting holes 7b called fool holes, and removing a small number of nuts 7c, which is less than half of the shutter plate 7. Only 7 can be quickly removed.

The submerged blade 10 at the lower end of the manhole 1 protrudes outward in the overhanging portion of the housing 3 so as not to hinder the submarine laying.
The water stop 11 of 1st Example is comprised by the above.

  When receiving the end of the propulsion pipe 12 to be propelled in the ground into the side hole 2 of the manhole 1 laid out by excavating the submerged blade body 10, as shown in FIGS. 4 to 6, there are few blind holes 7a. The nut 7c is removed, the shutter plate 7 is quickly removed, the side hole 2 is opened, the pressure-resistant wheel plate 6 is stopped by the removed nut 7c, and then the temporary lid 5a is peeled off to remove the waterstop 11 The end of the propelling tube 12 is received from the outside. The rubber ring 5 is supported from the inside by the pressure-resistant wheel plate 6 and presses against the tube surface of the propulsion pipe 12 to prevent inflow of earth and sand and groundwater into the housing 3. When the propulsion pipe end 12 reaches the inner end of the side hole 2, a flexible rubber joint 13 is fitted and one end is crimped to the inner surface of the side hole 2 with a spread band 14a and the other end is pressed against the pipe surface 12a and the band 14b is clamped. Fix and seal with water.

  The second embodiment shown in FIG. 7 is an example in which a well-known pilot propulsion body 12b having a thin lead is attached to the end of the propulsion pipe 12, and the water stop is the same shape as the rubber ring 5 in addition to the above. Since an inward bolt 8b is separately provided around the center hole 7d, the small rubber ring 5c, the small pressure ring plate 6b, and the small shutter plate 7e are skewed and the nut 7c is fastened to constitute the water stop device 11a. is there. The temporary lid 5a of the rubber ring 5 is not attached.

  When the pilot propulsion body 12a is received, the nut 7c except the loose fitting hole 7b is removed, the small shutter 7e is removed, and the temporary cover 5a of the small rubber ring 5c is peeled off to prepare. .

  FIG. 8 shows another example of the flexible rubber joint. Instead of crimping one end of the flexible rubber joint 13a to the inner surface of the side hole 2, the inner bolt 8 is used to closely contact the nut 7c. It was fixed.

  FIG. 9 shows an example in which the inner end of the rubber ring 5 is extended without using a flexible rubber joint, and the pressure contact width to the receiving propelling pipe surface 12a is widened to stop the band 14b. Since it is not necessary to separately attach a flexible rubber joint, the operation can be speeded up and the cost can be reduced.

  FIG. 10 shows an example in which the water stopper 11 is provided with chemical injection holes for solidifying the sand and sand, and the stop plate 9, the rubber ring 5, and the shutter plate 7 are penetrated in one to several places between the inward bolts 8. The medicine injection port 15 is provided, and the hexagon socket head bolt 16 is pulled out to be freely screwed and closed. Since the situation of the earth and sand can be grasped at the same time as confirming the position of the propelling tube end 12 by peeling off the temporary lid 5a a little before receiving the propelling tube end 12, the hexagon socket bolt 16 is necessary when it is necessary to solidify by chemical injection. Since the medicine injection port 15 is opened and the medicine injection hose (not shown) is inserted from the inside of the manhole 1, the medicine is injected into the earth around the side hole 2 and hardened. is there. After the operation, the drug injection hole 15 is re-closed by screwing the hexagon socket bolt 16. Since it is possible to work from inside the manhole 1 without requiring a medicine injection facility outside the manhole 1, the injection of the medicine can be extremely easily performed.

  In the present invention, as described above, the waterstop is extended and attached in a short cylindrical shape to the outside of the side hole of the manhole, so that it can be attached to a ready-made manhole. It can be applied to laying by a method and can be widely used.

(A) is a cross-sectional view of a water stop part attached to a manhole, and (b) is a vertical cross-sectional view of the same. Enlarged longitudinal sectional view showing each member of the water stop device in the state before assembly Same member view from the manhole mounting side (A) is a mounting state diagram viewed from the inside of the manhole, (b) is a state diagram in which half of the nuts excluding the loose fitting holes are removed and the shutter plate is removed. Partial plan view of the state where the shutter plate is removed by the arrival of the end of the propelling tube and the temporary lid is peeled off Transverse end view showing a state where a propulsion pipe end is received and a flexible rubber joint is mounted Fig. 2 shows a water stop for a propulsion pipe with a pilot propelling body attached thereto. (A) is a longitudinal sectional view showing a state before a small rubber ring, a small pressure ring plate and a small shutter plate are mounted, and (b) is the same figure. , Each member view seen from the manhole side Transverse half plan view showing an embodiment in which a flexible rubber joint is fixed with inward bolts and nuts Transverse half plan view showing an embodiment in which a rubber ring extension is banded and water sealed The example which provided the chemical | medical agent injection port is shown, (a) is the figure seen from the manhole side, (b) is the bb line longitudinal cross-sectional view of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 is a manhole which lays a submarine 2 is a side hole 3 is a housing with a flange 3a is a flange 3b is a bolt hole 4 is an anchor bolt 5 is a rubber ring 5a is a temporary lid 5b is a blind hole 5c is a small rubber ring 6 is a pressure ring 6a is a stop hole 6b is a small pressure-resistant wheel plate 7 is a shirter plate 7a is a stop hole 7b is a loose fitting hole 7c is a nut 7d is a center hole 7e is a small shutter plate 8 is an inward bolt 8a is a bolt head 8b is provided on the shutter plate The inward bolt 9 is a stop plate 10 is a blade 11, 11a is a water stop 12 is a propelling pipe 12a is a pipe surface 12b is a pilot propelling body 13, 13a is a flexible rubber joint 14a is an expansion band 14b is a tightening band 15 Is the drug inlet 16 is the hexagon socket bolt 17 is the adhesive

Claims (4)

  A manhole is equipped with a side hole that accepts the propelling pipe and a blade for laying a submarine at the lower end. A short cylindrical waterstop casing is overhanged on the outer surface of the side hole, and can be peeled off into the casing. A rubber ring for sealing with a lid, a pressure-resistant wheel plate that prevents external pressure of earth and sand water, and a shutter plate that can be removably closed by a side hole are inserted with a fixing bolt, and the side hole is received. The inside is opened to allow the flexible rubber joint to be stretched, and the lower laying blade body is formed so as to protrude outward from the waterstop overhang, and the end of the propelling tube is placed on the side from the outside of the waterstop housing. A water stop for a manhole, wherein a rubber ring for sealing is pressed against the surface of the propelling pipe and sealed with water when received in the hole.   The water stop device according to claim 1, wherein the shutter plate is provided with alternating nut stop holes and large loose fitting holes so that half of the nuts can be removed.   The water stop according to claim 1 or 2, wherein the shutter plate is separately provided with an inward bolt, and a small rubber sheet, a small pressure wheel plate and a small shutter plate for receiving the pilot propellant are skewed and fastened with a nut.   The water stopper according to any one of claims 1 to 3, wherein the rubber ring for sealing extends the inner end to widen the pressure contact width to the front surface of the receiving propelling pipe and seals with the band stopper water.

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