JPS60201808A - Boring apparatus for fluid transportation pipe - Google Patents

Abstract

PURPOSE:To markedly improve working efficiency by installing a member which can hold, with a rotary cutter, the peripheral-wall part which is cut in the automatic connection state, thus permitting the efficient cutting work, in a boring apparatus which is used when a branched pipe is connected to a water main. CONSTITUTION:In the captioned boring apparatus, a cylindrical cutter 8 which can carry-out cutting work, with the top cutting edge 8a, for the peripheral-wall part 1a positioned on the insertion transfer advance passage of a fluid transportation pipe 1 is installed in the state where the center X of the rotary shaft is positioned outside the pipe 1, into a working case 6 which can be flange-connected to a connection case 3 in the communication state to a sealed space 2, in the state where the case 6 communicates to the case 3, and the cutter 8 is turned and insertion-transferred in the state where the leak of transported fluid is prevented by the case 6, and a communication port 4 is formed onto the peripheral- wall of the pipe 1 by cutting the peripheral-wall part 1a. Thus, the cutting work can be carried-out efficiently, and the working efficiency can be markedly improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention can be used, for example, in construction work to connect a branch pipe to a water pipe, in which an opening is bored in the peripheral wall of the water pipe to allow the wood pipe and the branch pipe to communicate with each other. More specifically, the device is configured to connect a fluid transport pipe in a state where a closed space is formed between the outer surface of a peripheral wall of the transport pipe and to connect an end of another fluid transport pipe to the closed space. When the work case is connected to the connection case, the tool is inserted into the connection case through the communication ports of both cases. By inserting and moving while rotating around the axis along the insertion movement direction, the peripheral wall portion of the fluid transport pipe located on the path of the insertion movement can be moved by 9Jv.
The present invention relates to a drilling device for a fluid transport pipe, which is equipped with a cylindrical rotary cutter for drilling an opening in the peripheral wall of the fluid transport pipe for communicating the inside of the fluid transport pipe with the sealed space.

In this type of drilling device for fluid transport pipes, the rotary cutter is installed inside the work case, so it is possible to prevent the fluid in the fluid transport pipes from leaking during drilling. There is an advantage that the above-mentioned opening can be formed in the peripheral wall of the fluid transport pipe while the fluid is transported by the pipe.

As shown in FIG. 7, the conventional punching device having the above-mentioned advantages has the effect of pushing the rotary cutter (8) into the axial center of the rotary cutter (8) while the rotary cutter (8) rotates, that is, cutting. By installing a drill-like member (10) in series, which screws into the peripheral wall portion (1a) to be cut during operation,
We have discussed a configuration in which the cutting peripheral wall portion (1a) is taken out to the outside when the rotary cutter (8) is removed after cutting.

However, when using the above-mentioned conventional device, the cut peripheral wall portion can be taken out at the same time by removing the rotary cutter, and there is no need to take out the cut peripheral wall portion after the rotary cutter is removed, which has the advantage of superior cutting work efficiency. However, it had the following drawbacks:

In other words, when cutting with a rotary cutter, the drill-shaped member must be screwed into the entire circumferential wall, so the drive device such as a motor becomes larger and heavier, and it is difficult to carry it into the site, take it out, hem it, and remove it in advance. Post-workability is poor and costs are high.

The present invention has an object to overcome such conventional drawbacks.

A characteristic configuration of the fluid transport pipe perforation device according to the present invention taken to achieve the above object is that the rotary cutter is attached to the work case in such a manner that its rotational axis is located outside the fluid transport pipe. At the same time, it can be fixed in the connection case in a state where it can be unfastened from the outside, and in the fixed state, as the rotary cutter is pushed in, the rotary cutter is automatically attached to the axial center of the rotary cutter. The present invention has the following characteristics: a member is provided which is connected and can hold the cut circumferential wall portion with the rotary cutter in the automatically connected state; It is as follows.

In other words, after cutting, the holding member that is automatically connected to the axis of the rotary cutter is disconnected from the connection case, and the rotary cutter is pulled out, thereby holding the cutting peripheral wall portion between the rotary cutter and the holding member. Since the cut peripheral wall portion can be taken out together with the rotary cutter by holding the cut peripheral wall portion, it is possible to take out the cut peripheral wall portion together with the rotary cutter.
Although the working form is efficient, the power device for cutting can be kept to a minimum, which is enough to operate only the rotary cutter.

Therefore, according to the present invention, the driving device of the rotary cutter can be configured to be small and lightweight, which makes it possible to efficiently carry out preliminary work such as carrying in and installation, as well as post work such as removal and carrying out, and to cut, including taking out the cut peripheral wall part. Combined with the ability to work efficiently, we have been able to significantly improve work efficiency.

Embodiments of the present invention will be described below based on the drawings.

As shown in Figure 1, the connection case (3) is placed in a state that forms a sealed space (2) between the outer surface of the peripheral wall of the fluid transport pipe (1).
The connecting case (3) is fixedly mounted, and an opening (4) is formed on the peripheral wall of the fluid transport pipe f+) to communicate the inside of the fluid transport pipe fx) with the sealed space +21 VC.
Then, the end of another fluid transport pipe (1') is inserted into the sealed space (2').
A device for drilling the communication port (4) in a structure in which two fluid transport pipes (1) are provided with a connection port (5) for communication and connection to the The dough is constructed as follows.

In other words, as shown in FIGS. 2 and 3, the punching device is in a state that communicates with the closed space (2) @: the connection case (3).
) When the work case (6) is connected to the connection case (3) and the connection case (3) is in communication with the work case (6) that can be connected to the K flange, the above-mentioned It can be inserted and moved within the connection case (3), and
By pushing and moving while rotating around the axis (X) along the insertion movement direction of the fluid transport tube +11, the peripheral wall S (1a) located on the insertion movement path of the fluid transport pipe +11 is
) with a cylindrical rotary cutter (8),
The rotary cutter (8) is installed so that its rotational axis (X) is located on the outside of the fluid transport pipe (1), and the leakage of the transport fluid is prevented by the work case (6). The communication port (4) is formed in the peripheral wall of the fluid transport pipe f1+ by cutting the @wall portion (1a) by inserting and moving while rotating. Further, the punching device can be fixedly attached to the connection case (3) in a state where it can be unfixed from the outside, and when the drilling device is in the fixed state, the punching device can be fixedly attached to the connecting case (3) in a state where the drilling device can be freely operated to release the fixing from the outside, and when the drilling device is in the fixed state, it can be fixedly attached to the connection case (3) as the rotary cutter (8) is inserted and moved. Rotary cutter (
By inserting the continuous rod-shaped member (9) into the shaft core of the rotary cutter (8), the insertion movement of the rotary cutter (8) is guided and the rotation cutter (8) is inserted and moved to the cutting end. Therefore, the peripheral wall portion (1a) that can be automatically and securely connected to the rod-shaped member (9) in an axially fixed state, and that is cut in the securely connected state, is connected to the rotary cutter (8). A holding member (lO) is provided, and after cutting, the rotating cutter (8) is completely pulled out with the holding member (lO) unfixed to the connection case (3), thereby cutting the cutting peripheral wall. It is configured to take out 7 the portion (1a) along with it. (11) and (I21 are the rotary cutters (
11) A rotation drive motor and a punching drive motor for K. Further, the rotary cutter +81 #-t and the rotary shaft fl:(lK) driven by both the motors tlll1021 are configured to be removable.

The work case (6) can be communicatively connected to the connection case (3) and can be flange-connected to a cylindrical case (6A) provided with a barrier shutter (6a) and this cylindrical case (6A) in a communicating state. A bottomed cylindrical case (6B
) and is composed of sanaderu.

The guide/holding member flo) is connected to the connection case (3).
(Pol) (1
41 is fixed to the connection case (3), and the attached pin (16) is engaged with a hole formed in the case wall to align and position it. By fitting the circumferential wall portion (1a) from the direction perpendicular to the rotational axis (X), the cutting circumferential wall portion (1a) is prevented from moving in the axial direction and away from the rotary cutter (8). A recess (10a) is formed to hold the cut peripheral wall portion (1a). The holding member (l
The means for automatically locking and connecting the rod-shaped member (9) with the rod-shaped member (9) is to form a groove α ring near the tip of the rod-shaped member (9), and to insert the rod-shaped member (9) into the groove <161. While the specific elasticity C-shaped member o71 is elastically biased to an enlarged diameter state protruding from the surface of the curve and is inserted into the axial position regulation state,
When the rotary cutter (8) reaches the inner part of the holding member (the rod-shaped member insertion hole (IOA) in the field and near the cutting end, the elastic C-shaped member (l?) is allowed to undergo diametric expansion deformation. 7, and an enlarged diameter portion (18
).

As shown in FIGS. 4 to 6, the connection case (3) has cylindrical parts (3A) and (3A) that fit onto the fluid transport pipe parts located on both sides of the communication port forming part, respectively. The means for connecting both cylinder parts (3A) and (3A) to the fluid transport pipe (1) VC by attaching the pipe full Tlr-fly is to attach the flange (3a) fixed to the cylinder part (3A) = (3A). )+(3a), the annular members 09) and Q9), which are arranged opposite to each other in the tube axis direction, are brought close to each other via bolts, nut rows, connections, and groups to form the cylindrical portion (3A)+( 3
The annular rubber 12Q) I- interposed between the end face of A) and the annular member αIlI IQ9) is connected to the fluid transport pipe +110
A state in which the annular rubber (2) I+ + 12Qj seals between the cylindrical portions (3A) and the fluid transport pipe (1) by deforming it so that it is in close contact with the outer surface of the peripheral wall. This is a means of attaching a circular rubber mirror (Foundation) as an anchor.

Continuing case +3) and annular member 19) +19+ are each made by welding and fixing the two half portions against each other so as to hold the fluid transport pipe (1) from the pipe diameter direction. The annular rubber (2) I- fixes the ends of the rubber wrapped around the fluid transport pipe +11. Accordingly, it is configured to be fitted onto the fluid transport pipe f1+.翰1)・φ is a bolt for aligning the connection case (3) and the fluid transport pipe (1),
(24 is the communication port (7) of the connection case (3).
) This is a lid for closing the opening (3B) for forming the blade, and is configured so that it can be attached to the rotary shaft sword 3) with the rotary cutter (8) removed. At a glance, the lid f2 is opened when the work case (6) is connected.
2) is a bolt for temporarily fixing 2 to the connection case (3) by external operation, and 4) is a fixing ring that is flange-bonded to the connection case (3) and fixes the lid 4 to the connection case (31K). Yes, (the words I■ are respectively the above-mentioned por)
This is a cap for preventing fluid leakage from the insertion part of (+41, + container).

Next, both fluid transport pipes (1
), (One connection procedure will be explained.

■ As shown in Figure 3 (a), attach the connection case (3) with the holding member (101 attached) to the fluid transport pipe +1, and attach the connection case tljK and the work case inside the rotary cutter (8). (6) and the side fluid transport pipe (one).

@ As shown in Figure 3 (b) and Figure 2, the rotary cutter (8) is fully rotated and pushed in to cut the peripheral wall portion (1).
Cut a) and provide 5P communication ports (4).

As shown in Figure 3 (c), loosen the bolt (14) and secure the holding member (lO) to the connection case (3). After releasing, the rotary cutter (8) is pulled out and moved to the bottom side of the shutter (6a) together with the holding member (lO), and then the shutter (6a) is closed.

@ With the shutter (6a) closed, remove the bottomed cylindrical case (6B) from the k-cylindrical case (6A), and attach the lid (22) to the rotating shaft (I3) in place of the rotary shutter (8). , Reconnect the bottomed cylindrical case (6B)'& the cylindrical case (6A) [after this connection, as shown in Fig. 3], open the shutter (6a) and push in the lid.
Temporarily fasten it to the connection case (3).

■ As shown in Figure 5, remove the work case (6) from the connection case (3) and attach the fixing ring I to the connection case (3).
24) Fix the lid via.

In the drawings using the theory 8fiK of the above embodiment, a mode is shown in which the communication port (4) is formed without dividing the fluid transport pipe fl), but the drilling device according to the present invention divides the fluid transport pipe fl). It can also be applied to the case where the communication port (4) is formed in such a state that the communication port (4) is formed.

Examples of the fluid transport pipe fi+ to be perforated in the present invention include water pipes and gas pipes.

[Brief explanation of the drawing]

The drawings show an embodiment of the perforation device for fluid transport pipes according to the present invention, in which Fig. 1 is a schematic sectional view of a fluid transport pipe connection part, Fig. 2 is a longitudinal sectional side view of the main part, and Figs. B), (/tsu, ni) are schematic cross-sectional views showing usage instructions, Figure 4 is a cross-sectional plan view of the pipe connection, Figures 5 and 6 are V-v lines in Figure 4, respectively. It is a sectional view taken along the line VI-VI, and FIG. 7 is a schematic sectional view showing a conventional example. (1)・(1su...Fluid transport pipe, (2)...
・- Sealed space, (5)...Connection port, (3)・
...Connection case, (6) ...Connection case, (7) ...Communication port, (la) ...
Peripheral wall portion, (4)...Communication port, (8)...
...Rotary cutter, (lO)...Holding member. Agent Patent Attorney Osamu Kitamura

Claims (1)

[Claims] ■ An end portion of another fluid transport pipe (1') that is attached to the fluid transport pipe H in such a manner that a sealed space (2) is formed between it and the outer surface of the peripheral wall of the transport pipe f1+. A work case (6) that can be connected in communication with a connection case (3) in which a connection port (6) is formed for connecting the
), when the work case (6) is connected to the connection case (3), the communication opening of both cases (6) + (3) (
7) into the connection case (3), and is inserted and moved while rotating around the axial center along the direction of the insertion movement. Cut the transport pipe peripheral wall portion (1a) to obtain 01
1. A cylindrical rotary cutter (8) for boring an opening (4) in the peripheral wall of the fluid transport pipe (1) for communicating the inside of the fluid transport pipe (11) with the sealed space (2) is installed inside the fluid transport pipe (1). , the rotary cutter (8)
However, the axis of rotation (X) is flowing. State K where it is located outside the body transport pipe (1) It cannot be installed in the work case (6) described in III, but it can be installed and fixed in the connection case (3) in a state where it can be unfastened from the outside. The installation is carried out in a fixed state as the rotary cutter (8) is pushed in and moved.
), and the peripheral wall portion (1a) that is cut in the automatically connected state is connected to the shaft core of the rotary cutter (1a).
8) A perforation device for a fluid transport pipe, comprising a member (lO) capable of being held by the same. ■ The holding member (lO) is connected to the rotary cutter (8).
Closet movement t? The perforation device for a fluid transport pipe according to claim 0, which also serves as a guiding member.