JP4114774B2 - Chip recovery device in continuous water cutting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chip collecting device that captures and collects chips generated when an existing fluid pipe that has been exposed by excavating the ground is cut in an indefinite water state .
[0002]
[Prior art]
As shown in FIG. 8, a conventional water cutting device for cutting a fluid pipe in a sealed state encloses a cutting portion of an existing fluid pipe exposed by excavating the ground with a sealing casing 02 and covers it with the sealing casing 02. It consists of a broken cutting machine 03. The chip recovery method in the continuous water cutting device for the fluid pipe 01 is such that the chips that have fallen on the bottom surface of the sealed casing 02 generated at the time of cutting the drain pipe 05 using the water pressure in the pipe from the drain valve 04 provided at the bottom. It can be discharged through. In addition, chips remaining in the casing 02 after completion of drilling and cutting were discharged to the outside by a sweeper method.
[0003]
[Problems to be solved by the invention]
However, such a conventional chip recovery method can discharge a certain amount of chips, but chips that cannot be dropped may flow in the main pipe along the mainstream, and after cutting is completed. Even in the sweeper method, depending on the flow velocity in the pipe, chips may flow to the downstream side.
[0004]
For this reason, it is conceivable to insert the filter member in a sealed state in the vicinity of the cut portion of the fluid pipe. However, it is difficult to collect and collect all the chips in the filter member, and the water flow is caused by fluctuations in the demand portion. When the direction of was changed, the chips that had been captured so far were scattered and there was a problem in practical use.
[0005]
The present invention has been made in view of the above problems, and even if the direction of the water flow changes due to fluctuations in demand points, chips are not mixed into the fluid pipe and can be reliably and easily taken out to the outside. It aims at providing the chip collection | recovery apparatus in a water cutting device.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention captures and collects chips generated when cutting a cutting portion of the fluid pipe in an undisturbed water state in an existing fluid pipe exposed by excavating the ground. A recovery device,
And the network portion having flexibility is constituted by an operating unit Before moving the net-section between the fluid pipe of the open extraoral sealed chamber and the opening through the opening formed in the fluid pipe wall, wherein the fluid It is characterized by being arranged at two locations upstream and downstream of the tube cutting site.
According to this feature, since the chip collection device is disposed at two upstream and downstream locations of the fluid pipe cutting site, even if the direction of the water flow changes due to fluctuations in the demand location, either upstream or downstream chips Chips can be captured by the recovery device, and the capture and recovery of the chips can be easily switched by simply moving the net through the opening.
[0007]
In the chip collecting device in the continuous water cutting device of the present invention, it is preferable that the mesh portion is folded in the sealed chamber and expandable to the inner diameter of the tube in the fluid tube.
In this way, the net portion can be expanded to the inner diameter of the pipe, so that the chips can be taken in reliably, and the folded pieces can be prevented from spreading out by being folded, and a small sealed chamber can be used.
[0008]
In the chip collecting device in the continuous water cutting device of the present invention, it is preferable that a sweeper tool can be put into the fluid pipe in addition to the chip collecting device.
If it does in this way, the capture | exclusion leak of the chip | tip by a net | network part and the chip | tip which fell to the place away from the net | network part can be reliably collect | recovered with the tool for sweepers.
[0009]
In the chip collecting device in the continuous water cutting device of the present invention, it is preferable that the sweeper tool can be inserted into the fluid tube by inserting a sweeper tube from the sealed housing.
If it does in this way, if a sweeper pipe | tube is inserted from the sealed housing used for the cutting | disconnection, a chip | tip can be collect | recovered efficiently.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
FIG. 1 relates to an embodiment of the present invention, and FIG. 2 is a side view showing a state in which a chip collecting device is disposed at two locations upstream and downstream of a drilling device attached to an existing fluid pipe in a watertight state. FIG. 3 is a perspective view of the chip collecting device, FIG. 4 is a perspective view of the chip collecting device, and FIG. 3 is a perspective view of the chip collecting device. Sectional drawing which shows the state in which the net body is accommodated in the guide cylinder of the chip recovery apparatus attached to the flange, FIG. 5 is a cross-sectional view showing the state in which the net body is fed into the water pipe by the operation of the operation unit FIG. 6 is a cross-sectional view showing a state in which the net fed into the water pipe expands and contacts the water pipe inner wall.
[0012]
Reference numeral 1 shown in FIG. 1 indicates a water pipe as an existing pipe, and a drilling device 2 for drilling is connected to a part of the water pipe 1 to connect a branch pipe. In order to attach the drilling device to the water pipe 1, the ground 3 is excavated to expose the water pipe 1 to form a pit 3a having a predetermined width, and concrete is horizontally placed on the bottom surface of the pit 3a. 5 and the foundations 6a and 6b that support the bottoms of both sides of the water pipe 1 at the perforation locations.
[0013]
Therefore, the exposed water pipe 1 is mounted with a sealing housing 4 divided into two parts in the vertical direction around the pipe axis of the water pipe 1 so as to cover the perforated portion via a bolt (not shown). The gate valve 14 is attached to the center upper part of 4, and the punching device 2 is attached to the upper part thereof via a flange F. Here, the perforating apparatus 2 constitutes an “unbreakable water cutting apparatus” for carrying out the present invention.
[0014]
On the sealed housing 4 that covers the water pipe 1, chip recovery devices 10a and 10b having the same structure are detachably attached to two locations on both upstream and downstream sides of the punching device 2. Therefore, one chip recovery device 10a (the device on the left side in FIG. 1) will be described.
[0015]
As shown in FIG. 4, the left chip recovery device 10a includes a gate valve 15a attached to the flange 22a of the connecting short tube 22 at the top of the sealed housing 4, and a watertight seal over the gate valve 15a via the flange 25a. A guide cylinder 25 configured as a sealed chamber attached to the guide cylinder 25, and a partition net 26 serving as a net portion in which the flexible mesh housed in the guide cylinder 25 is composed of a relatively fine wire net, This partition net 26 is composed of an operation unit 28 for taking in and out the water pipe 1.
[0016]
In addition, a filter element (Japanese Patent Laid-Open No. 6-319917) filed by the same applicant is used for the partition net 26, and the partition net 26 is connected to the water pipe 1 as shown in FIG. The support frame 32 is supported on the entire circumference by a loop-like elastic support frame 32 having a shape conforming to the inner diameter, and a connecting rod 36 is coupled to the support frame 32 in the vicinity of the coupling portion of the coupling rod 36. The jaw 37 is fixed, and a plug 39 made of rubber or plastic for closing and sealing the opening 46 of the water pipe 1 is formed between the jaw 37 and the outer edge of the support frame 32. Has been.
[0017]
The support frame 32 includes an elastic frame 33 and a flexible rubber or plastic strip 38 fixed to the outer peripheral surface of the frame 33. The support frame 32 has an elliptical or elliptical shape in a vertical direction in a natural state where no external force is received, and is substantially circular according to the inner diameter of the water pipe 1 by receiving a force from the outside. By constituting so as to expand, the close contact between the support frame 32 or the wrinkle strip 38 and the inner peripheral wall 1a of the water pipe 1 is ensured.
[0018]
A trapezoidal or truncated quadrangular pyramid detent member 40 that shrinks downward is fixed to the upper end of the connecting rod 36, and this detent member 40 inserts the partition net 26 into the water pipe 1. At this time, after passing through the partition net 26, it is possible to prevent rotation or misalignment by engaging with a rectangular opening (not shown) formed inside the partition valve 15a. Yes.
[0019]
Further, as shown in FIG. 4, an operating rod 41 is screwed onto the central upper surface of the rotation prevention member 40, and the lid of the upper end of the guide cylinder 25 is operated to the tip of the operating rod 41 inserted outward in a watertight state. A handle 30 is provided.
[0020]
On the other hand, 20 shown in FIG. 2 shows a sweeper tool. This sweeper tool 20 is a device for discharging chips generated when the water pipe 1 is drilled to the outside. When the drilling device 2 is removed from the upper flange F of the gate valve 14 when the operation is completed, the tip of the sweeper tube 20a inserted therein through the sweeper insertion port 16 of the lid 13 attached to the flange F is sealed. 4, chips that cannot be recovered by the chip recovery devices 10 a and 10 b are sucked and discharged to the outside.
[0021]
The lid 13 attached to the flange F at the top of the sealed housing 4a is provided with a viewing window 18 that can see the inside of the sealed housing 4 adjacent to the sweeper insertion port 16.
[0022]
Next, the operation of the chip recovery device configured as described above will be described.
[0023]
First, as shown in FIG. 1, a sealing housing 4 divided into two parts in the vertical direction is mounted around a perforated portion of the water pipe 1 exposed in the excavated pit 3a. The sluice valve 14 is attached to the piercing device 2, and the piercing device 2 is attached to the upper part thereof via the flange F.
[0024]
As shown in FIG. 4, in the initial state of the chip collection devices 10a and 10b, the partition net 26 is housed inside the guide cylinder 25 of the partition valve 15a in a state of being contracted into an elongated shape. The operating handle 30 is operated in a state where 15a is opened, and the partition net 26 passes through the partition valve 15a and enters the water pipe 1.
[0025]
Next, when the partition net 26 is further pushed down as shown in FIG. 5 and the lower end of the partition net 26 comes into contact with the bottom of the inner peripheral wall of the water pipe 1, the partition net 26 is located between the connecting rod 36 and the bottom of the inner peripheral wall. Therefore, the rotation prevention member 40 is locked inside the gate valve 15a.
[0026]
When the partition net 26 is completely accommodated in the water pipe, as shown in FIG. 6, the operation frame 30 allows the support frame 32 of the partition net 26 to have sufficient pressure over the entire inner peripheral wall 1 a of the water pipe 1. Thus, the partition net 26 is stretched across the water pipe 1.
[0027]
Thus, as shown in FIG. 1, when the inner peripheral walls of the water pipe 1 on both sides of the punching device 2 are partitioned by the partition nets 26a and 26b of the chip recovery devices 10a and 10b, the punching device 2 is activated. The cutter C is rotated, and the water pipe 1 is perforated in an indefinite water state.
[0028]
Since the cutter C having a diameter larger than the diameter of the water pipe 1 is used in drilling the water pipe 1, the cut water pipe 1 is completely cut, but both sides of the perforated portion of the water pipe 1 are Since it is supported by the foundations 6a and 6b, the horizontal state is maintained and the stable state is maintained.
[0029]
Then, the chips D generated by the drilling process of the water pipe 1 are captured by the partition nets 26a or 26b disposed either before or after the hole drilled depending on the direction of the water flow in the water pipe 1, and are sent downstream. Outflow is prevented.
[0030]
When the drilling process is completed, the cutter C is pulled up above the gate valve 14 to close the gate valve 14, and then the punching device 2 is removed from the flange F. The tube cut at this time is also removed.
[0031]
When the punching device 2 is removed and the flange F is closed by the lid 13, as shown in FIG. 2, the sweeper pipe 20 a is inserted into the inside through the sweeper insertion port 16 of the lid 13, so Chip D that has fallen in the vicinity of both partition nets 26a and 26b or at the bottom of the sealed housing 4 is sucked by the sweeper tube 20a and stored in the storage box 21.
[0032]
In this way, when the collection of the chips D is completed, the both partition nets 26a and 26b are pulled upward by the operation of the operation handle 30 of the operation unit 28, respectively, and the guide cylinders above the partition valves 15a and 15b. 25.
[0033]
Therefore, in a state where the gate valves 15a and 15b are closed, the chip collection devices 10a and 10b are removed from the upper parts of the gate valves 15a and 15b. FIGS. 7A to 7D are action explanatory views showing a state in which the opening at the upper end of the connecting short pipe from which the chip collecting device has been removed is closed. As shown in FIG. Instead of the chip collection devices 10a and 10b, the inner lid insertion device 42 is attached to the upper part of the gate valves 15a and 15b, respectively.
[0034]
Next, as shown in FIG. 7B, by operating the inner lid insertion device 42, the inner lid 44 is temporarily fixed in a watertight manner in the opening at the upper end of the connecting short tube 22 provided on the upper portion of the sealed housing 4. When attached, the inner lid insertion device 42 is removed as shown in FIG. 7C, and finally the inner lid 44 is attached to the flange 22a as shown in FIG. A series of drilling processes are completed when the upper surface of the tube is securely sealed.
[0035]
As described above, in the present invention, by arranging the chip collection devices 10a and 10b at two locations upstream and downstream of the perforated portion of the water pipe 1, even if the direction of the water flow changes due to fluctuations in the demand location, etc. The chip D can be captured by either the upstream or downstream chip recovery device 10a, 10b, and the chip 26 can be simply moved up and down through the opening 46 of the water pipe 1. D capture and recovery can be easily switched.
[0036]
Further, the partition net 26 extends to the inner diameter of the water pipe 1, so that the chips D can be reliably taken in. The folded chips can be prevented from being spilled out, and can be easily used even in a small sealed chamber. Can respond.
[0037]
Furthermore, even if the trapping leakage of the chips D by the partition net 26 and the chips D that have fallen away from the partition net 26 are combined with the sweeper tool 20, they can be reliably recovered.
[0038]
Further, the chips D can be efficiently recovered by inserting the sweeper tube through the sweeper insertion port 16 at the top of the sealed housing 4 used for cutting.
[0039]
【The invention's effect】
According to the present invention, the following effects can be achieved.
[0040]
(A) According to the invention described in claim 1, since the chip collection device is disposed at two upstream and downstream portions of the cutting portion of the fluid pipe, even if the direction of the water flow changes due to fluctuations in the demand portion, the upstream portion Alternatively, the chips can be captured by either one of the downstream chip collection devices, and the capture and collection of the chips can be easily switched by simply moving the net portion through the opening.
[0041]
(B) According to the invention described in claim 2, the net portion can be expanded to the inner diameter of the pipe, so that chips can be reliably taken in, and the chips captured by folding can be prevented from spreading out, and can be sealed small I need a room.
[0042]
(C) According to the invention described in claim 3, it is possible to reliably collect chips leaked by the net part and chips that have fallen away from the net part with the sweeper tool.
[0043]
(D) According to invention of Claim 4, if a sweeper pipe | tube is inserted from the sealed housing used for the cutting | disconnection, a chip | tip can be collect | recovered efficiently.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which chip recovery devices are disposed at two locations upstream and downstream of a drilling device attached to an existing fluid pipe in a watertight state according to an embodiment of the present invention.
FIG. 2 is an explanatory view showing a state in which chips after drilling are collected by a chip collecting device and a sweeper tool disposed at two locations upstream and downstream of the drilling unit.
FIG. 3 is a perspective view of a chip recovery device.
FIG. 4 is a cross-sectional view showing a state in which a net is housed in a guide cylinder of a chip collecting device attached to a flange of a seal tube.
FIG. 5 is a cross-sectional view showing a state in which a net body is fed into a water pipe by operation of an operation unit.
FIG. 6 is a cross-sectional view showing a state in which the net body fed into the water pipe expands and contacts the water pipe inner wall.
FIGS. 7A to 7D are operation explanatory views showing a state in which an opening at an upper end of a connecting short pipe from which a chip collecting device is removed is closed.
FIG. 8 is a cross-sectional view showing a conventional chip collecting device for taking out chips generated by the punching device from the inside of the sealed casing to the outside.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water pipe 1a Inner peripheral wall 2 Punching device 3 Ground 3a Pit 4 Sealing housing 5, 6a, 6b Foundation 10a, 10b Debris collection device 13 Lid 14 Gate valve 15a, 15b Gate valve 16 Sweeper insertion port 18 Peep window 20 Tool for sweeper 20a Sweeper tube 21 Storage box 22 Short connection tube 22a Flange 25 Guide cylinder (sealed chamber)
25a Flange 26 Partition net 26a, 26b Partition net (net part)
28 Operation section 30 Operation handle 32 Support frame 33 Frame body 36 Connecting rod 37 Jaw 38 Strip 39 Plug body 40 Anti-rotation member 41 Inner lid insertion device 44 Middle lid 45 Lid body 46 Opening C Cutter D Chip F Flange

Claims (4)

In an existing fluid pipe that has been exposed by excavating the ground, it is a chip collection device that captures and collects chips generated when cutting the cutting section of the fluid pipe in an undisturbed water state ,
And the network portion having flexibility is constituted by an operating unit Before moving the net-section between the fluid pipe of the open extraoral sealed chamber and the opening through the opening formed in the fluid pipe wall, wherein the fluid A chip collection device in a continuous water cutting device, characterized in that it is disposed at two locations upstream and downstream of a tube cutting site.   2. The chip collection device in the continuous water cutting device according to claim 1, wherein the mesh portion is in a folded state in the sealed chamber and is expandable to a tube inner diameter in the fluid tube.   The chip collection apparatus in the continuous water cutting apparatus according to claim 1 or 2, wherein a sweeper tool can be put into the fluid pipe in addition to the chip collection apparatus.   The chip collecting device in the continuous water cutting device according to claim 3, wherein the sweeper tool can be inserted into the fluid tube by inserting a sweeper tube from the sealed housing.

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