JPH11344154A - Guide roll device - Google Patents

Abstract

(57) [Problem] To provide a guide roll device capable of reducing a load on an existing pipeline when drawing a pipe insertion member into an existing buried pipeline and improving work efficiency. SOLUTION: A pipe such as a pulling wire 65 and a plastic pipe 60 fixed to an outlet side end of a pipe 50 buried in the ground and pulled out from the pipe outlet by operation of a pulling device such as a winch 70. A guide roll member 10 for guiding the insertion member in the ground direction, and a traction device 70 such that the traction device 70 is positioned on the movement path of the traction wire 65 between the traction device and the existing pipeline outlet.
A support member 30 fixed to the side, and an axially expandable and contractible column 20 connected at one end to the guide roll member 10 and at the other end to the support member 30, respectively. 10 and the support member 30, the universal joints 40, 45
Connect through.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide roll device used when a member to be inserted into an existing buried pipeline is pulled into the existing pipeline by operating a traction device installed and fixed on the ground. .

[0002]

2. Description of the Related Art An existing pipe such as a gas pipe embedded in the ground is provided with a tubing insertion member such as a plastic pipe for pipe rehabilitation and a cleaning tool such as a brush and a scraper. Via, when operating a pulling device such as a winch installed on the ground and pulling in from the entrance of the existing pipeline to the exit, a guide roll device is installed outside the exit side of the existing pipeline, The advancing direction of the pulling wire is directed from the pipe axis direction toward the ground pulling device by the guide roll device.

[0003] Hereinafter, problems of a conventional guide roll device will be described by taking as an example a case where a plastic pipe for lining is used as the pipe insertion member. Insertion of the plastic pipe into the existing pipeline digs a working pit on the entrance side and the exit side of the existing pipeline, and changes the traveling direction of the pulling wire and the following plastic pipe into the exit side working pit. Install the guide roll at the exit of the existing pipeline,
Pulling the pulling wire and the plastic pipe from the inlet to the outlet of the pipeline using a pulling device such as a winch, and changing the traveling direction of the pulling wire and the like drawn from the outlet of the pipeline to the ground direction by the guide roll. It is performed by

However, conventionally, since the guide rolls are supported only by being attached to the existing pipeline, there are the following inconveniences. That is, since the guide roll serves as a fulcrum when guiding the traveling direction of the pulling wire and the insertion member in the pipeline upward (toward the ground), the insertion member in the pipeline is inserted into the existing pipeline. In this step, a large upward load is applied to the guide roll. Therefore, in the conventional configuration in which the guide roll is supported only by the existing pipeline, the existing pipeline is seriously damaged, thereby causing damage to the existing pipeline.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and when inserting an in-line insertion member into an existing line, the traveling path of the in-line insertion member. It is an object of the present invention to provide a guide roll device installed in a work pit for change, which can reduce a load on the existing pipeline and can improve work efficiency. .

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a method in which a member to be inserted into an existing pipeline buried underground is operated by a traction device fixedly installed on the ground. When the wire is pulled from the inlet to the outlet through the pulling wire from the inlet to the outlet through the pulling wire, the moving path of the pulling wire and the insertion member following the pulling wire is located outside the outlet side of the existing pipe. A guide roll device installed for guiding from the axial direction of the road to the ground direction, the guide roll device being fixed to an exit side end of the existing pipeline, being pulled out from the exit of the existing pipeline, and being inserted. A guide roll member for guiding the member toward the ground, a support member fixed to the traction device side so as to be located on a movement path of the traction wire between the traction device and an existing pipeline outlet, and one end of the guide member A support member having an adjustable axial length connected to the supporting member and the other end to the support member, respectively, and the support, the guide roll member and the support member are connected via a universal joint. A guide roll device is provided.

Preferably, the support member may include a second guide roll member for guiding the pulling wire and the insertion member toward the pulling device.

[0008] Preferably, the guide roll member can be fixed to the existing pipe so that the position thereof can be adjusted in the pipe axis direction.

Preferably, the support member can be fixed to the traction device so as to be vertically position-adjustable.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a guide roll device according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view showing an example of a process of using a guide roll device according to the present embodiment to draw a plastic lining pipe as an insertion member into a pipeline into an existing pipeline, and FIG. FIG. 3 is a plan view of a process example, and FIG.
FIG. 3 is a sectional view taken along line BB in FIG. In the present embodiment, a plastic pipe for lining is described as an example of a member to be inserted into a pipe, but the present invention is not limited to this. For example, a pipe such as a brush or a scraper may be used. It is used when pulling various pipe insertion members such as cleaning tools into the existing buried pipe.

[0011] Guide roll device 1 according to the present embodiment
The lining plastic pipe 60 is moved from the entrance to the exit into the existing pipeline 50 buried in the ground via the traction wire 65 by operating a traction device such as a winch 70 fixedly installed on the ground. At the time of retraction, it is installed outside the exit side of the conduit 50 to guide the moving path of the pulling wire 65 and the plastic pipe 60 following the pulling wire 65 from the axial direction of the conduit 50 toward the ground. Things.

The guide roll device 1 is provided with an existing pipeline 50.
Roll member 10 attached to the outlet end of the
A support 20 having one end connected to the guide roll portion via a universal joint 40 and the other end extending to the ground; and a support member 3 supporting the other end of the support 20 via a universal joint 45.
0.

FIG. 4 is an enlarged view of a portion A in FIG. 1, FIG. 5 is an exploded view of the portion, and FIG. 6 is a view taken in the direction of arrow X in FIG. As shown in FIG. 4, the guide roll member 10 includes a cylindrical clamp portion 11 fastened to an exit end of the existing pipeline 50 and a roll portion 15 fixed to the clamp portion. doing. Although the clamp portion 11 and the roll portion 15 can be integrally formed, it is preferable that the clamp portion 11 and the roll portion 15 are formed separately from each other in consideration of the efficiency of mounting work to the existing pipeline 50.

The clamp section 15 can be composed of various pipe clamps, and can include, for example, a pair of semi-cylindrical bodies and a fastener for fastening these. As shown in FIGS. 5 and 6, an engagement protrusion 12 is formed on the upper part of the clamp portion 11 along the axial direction of the existing pipeline 50. Mounting holes 12 a penetrating in the width direction are formed in the engaging projection 12 at a predetermined pitch along the axial direction of the existing pipeline 50.

The roll portion 15 has a concave portion 16 which engages with the engaging convex portion 12 of the clamp, a support shaft 17 provided at the tip of the concave portion, and a second support shaft which is rotatably supported by the support shaft. It has one roll 18 and a plate portion 19 provided above the first roll.

On both side walls of the concave portion 16, through holes 16 corresponding to mounting holes formed in the engaging convex portion of the clamp are provided.
a is formed. Therefore, by aligning the through hole 16a and the mounting hole 12a, the roll portion 15 can be mounted on the clamp portion 11 so that the axial position can be adjusted. Thus, the roll part 15
Of the existing pipe 50 and the first roll 18 can be fixed to the clamp portion 11 by adjusting the position in the pipe axis direction.
And the distance between the base side wall surface of the outlet side work pit 101 and the roll portion 15 can be easily adjusted, and the efficiency of the plastic pipe insertion work can be improved. That is, depending on the size of the work pit to be formed and the cutting position of the existing pipeline, the length of the existing pipeline protruding from the base end wall surface of the exit-side work pit may be reduced. In this case, if the position of the roll portion 15 cannot be adjusted in the pipe axis direction with respect to the existing pipe line, it is necessary to re-dig the work pit. In contrast,
In the present embodiment, since the roll portion 15 can be fixed so that the position in the pipe axis direction can be adjusted, even if the length of the existing pipeline protruding into the work pit is short, the work pit is digged again. Without this, the guide roll member 10 can be fixed to the existing pipeline.

A universal joint 40,
Preferably, the column is swingably connected via a ball joint. The strut 20 has a double pipe structure,
The inner tube and the outer tube are screwed together, or adjustment holes are formed in the inner tube and the outer tube at a predetermined pitch in the axial direction, and the positioning is performed so that the inner tube and the outer tube can expand and contract in the axial direction. In the present embodiment, as shown in FIG.
The central part 22 sandwiched between the two has a double-pipe structure.

The other end of the column 20 is connected to a work pit 101
Extends from above to the ground. The column has a universal joint 45 at the other end.
And the support member 30 is provided via the universal joint 45.
Is swingably connected to the The universal joint 45 provided at the other end of the support 20 is, as best seen in FIG.
It has 46 engaging projections. In the present embodiment, two columns are provided. However, the number of columns can be changed as appropriate according to the load applied to the guide roll member, the strength of the columns themselves, and the like.

The support member 30 is fixed to the winch 70 so as not to be relatively movable. The fixing position of the support member 30 to the winch 70 is vertically adjustable (see FIGS. 1 and 9). The support member 30 is fixed to the winch 70 by fixing the support member 30 to the winch 70 itself, fixing the support member 30 to a winch-mounted work vehicle (reference numeral 110 in FIGS. 1 and 9), and holding the winch. Fixing to a member is also included.

The supporting member 30 is a plate-like long member that extends in the horizontal direction at right angles to the column and preferably includes a second guide roll 31 for guiding the pulling wire and the plastic tube in the direction of the winch 70. Can be.
By providing the second guide roll 31, it is possible to prevent the pulling wire 50 wound around the winch 70 from contacting other members, and thereby it is possible to improve the efficiency of the plastic pipe drawing operation. As shown in FIGS. 2 and 8, the support member 30 is provided with mounting holes 32 for engaging with the engaging projections 46 of the universal joint 45 provided at the other end of the support column at a predetermined pitch along the longitudinal direction. Have been. As described above, both ends of the support column 20 can be freely connected to the guide roll member 1 via the universal joints 40 and 45.
0 and the supporting member 30 and is made freely expandable and contractible in the axial direction. Therefore, it is possible to connect the other end of the column 20 to any of the mounting holes 32 formed in the support member. In addition, the universal joint 45 and the mounting hole 32 are undetachably connected by a pin 47 as shown in FIG.

According to the guide roll device configured as described above, the following effects can be obtained. That is, while attaching the guide roll member 10 to the existing pipeline 50,
Since the guide roll is also connected to the support 20 substantially integrated with the winch 70, the load on the existing pipeline 50 is reduced as compared with the conventional configuration in which the guide roll is supported only on the existing pipeline. Accordingly, it is possible to prevent the existing pipeline 50 from being damaged.

Further, both ends of the column 20 are respectively
Since it is connected to the guide roll member 10 and the support member 30 via the universal joints 40 and 45, the winch 7
It is not necessary to arrange the 0 so that its winding direction matches the axial direction of the existing pipeline 50, thereby improving the working efficiency. That is, the winch is usually mounted on the work vehicle, but depending on the situation at the work site, the work vehicle may not be able to be stopped so that the winding direction of the winch matches the axial direction of the existing pipeline. . In this case, if it is not possible to adjust the mounting angle of the support, the work of inserting the plastic pipe cannot be performed.
According to the guide roll device according to the present embodiment, the support 2
0 can be swung in any direction with respect to the axial direction of the existing pipeline 50, so that the plastic vehicle can be inserted regardless of the direction in which the work vehicle is stopped.

Further, since the fixing position of the support member 30 to the winch 70 can be adjusted in the vertical direction, the size of the work pit 101 can be reduced. That is, as shown in FIG. 9, the fixing position of the support member 30 is raised upward,
If the angle of inclination of the column 20 in a side view is increased, the operation of inserting the plastic pipe can be performed in a small work pit, whereby the efficiency of the operation of inserting the plastic pipe can be improved.

[0024]

According to the guide roll device according to the present invention, the pulling wire drawn out from the exit of the existing pipeline by the operation of the pulling device installed on the ground and the moving path of the subsequent insertion member in the pipeline are set. A guide roll that changes the axial direction of the pipeline from the axial direction to the ground direction is supported by the existing pipeline and an axial length-adjustable column having one end fixed to a traction device. Since the connection is made via the universal joint, the existing pipeline can be protected and the work efficiency can be improved in the insertion work of the pipeline insertion member.

Further, if the support member is provided with a second guide roll for guiding the pulling wire and the insertion member in the pipeline toward the pulling device, the winding efficiency of the pulling wire by the pulling device can be improved.

Further, if the guide roll member can be fixed to the existing pipeline so that the position in the pipe axis direction can be adjusted, the guide roll member can be efficiently attached to the existing pipeline. .

Further, if the fixing position of the support member to the traction device side can be adjusted in the vertical direction, the size of the work pit can be reduced, and as a result, the efficiency of the plastic pipe insertion work can be improved. obtain.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a plastic pipe insertion step using a guide roll device according to one embodiment of the present invention.

FIG. 2 is a plan view of the plastic tube inserting step shown in FIG.

FIG. 3 is a front view of the plastic tube inserting step shown in FIG. 1;

FIG. 4 is an enlarged view of a portion A in FIG. 1;

FIG. 5 is an exploded view of a portion A in FIG. 1;

FIG. 6 is a view as viewed in the direction of the arrow X in FIG. 5;

FIG. 7 is a detailed view of a support in the guide roll device shown in FIG. 1;

FIG. 8 is a diagram for explaining a connection state between a support, a guide roll member, and a support member in the guide roll device shown in FIG. 1;

FIG. 9 is a side view showing another example of the plastic pipe insertion step using the guide roll device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide roll device 10 Guide roll member 20 Prop 30 Support member 40, 45 Universal joint 50 Existing pipeline 70 Winch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Seiji Minakami 6-8-6 Hanakoganei, Kodaira-shi, Tokyo (72) Inventor Yasuo Miyazaki 2-16-6 Oimazato Minami, Higashinari-ku, Osaka-shi, Osaka (72) Inventor Akira Kade 1-10-21 Nishiiwata, Higashiosaka City, Osaka (72) Inventor Hirohisa Tanimuro 448-5 Hagiwaracho, Ikoma City, Nara Prefecture

Claims (4)

[Claims] 1. A member to be inserted into an existing pipeline buried in the ground is moved from an inlet to an outlet into the existing pipeline via a traction wire by operating a traction device fixedly installed on the ground. At the time of retraction, it is installed outside the exit side of the existing pipeline to guide the moving path of the pulling wire and the following insertion member from the axial direction of the existing pipeline toward the ground. A guide roll member fixed to the exit side end of the existing pipeline and guiding the traction wire and the insertion member drawn out from the exit of the existing pipeline in the ground direction; and the traction device and the existing A support member fixed to the traction device side so as to be located on a movement path of the traction wire between pipe outlets, and one end connected to the guide roll member and the other end connected to the support member, respectively. A guide roll device, comprising: a supporting column whose length in the axial direction can be adjusted; and the supporting column is connected to a guide roll member and a support member via a universal joint. 2. The guide roll device according to claim 1, wherein the support member includes a second guide roll member for guiding the pulling wire and the insertion member toward the pulling device. 3. The guide roll device according to claim 1, wherein the guide roll member is fixed to the existing pipeline so that a position in a pipe axial direction can be adjusted. 4. The guide roll device according to claim 1, wherein the support member is fixed to the traction device so that a position in a vertical direction can be adjusted.