JPH102453A - Pipeline burying blade, pipeline burying device and pipeline burying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipeline burying blade, a burying device and a burying method that can lay a pipeline rapidly and reduce repair work on the ground surface to a minimum by drilling an extremely narrow slit on the ground surface. SOLUTION: A cutter part 1 is formed on one side in the width direction of a plate-like blade 5, and a fastening part 3 for fastening flexible line material for inserting a pig 11 is provided at a lower part of the cutter part 1. An upper part of the blade 5 is connected to a vibrating device 4. A supporting frame 6 of the blade 5 is connected to a drive vehicle 14, and a slit 10 is formed along a pipeline laying path. The pig 11 is made enter the lower part of the slit 10 through the flexible line material 2 to form an enlarged through part, and a pipeline is laid therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade for burying various pipes underground, a pipe burying apparatus, and a pipe burying method. More particularly, the present invention relates to a method for minimizing an excavation width when excavating from the surface for burying a pipe so as to minimize damage on the ground surface.

[0002]

2. Description of the Related Art For example, when laying a lawn watering pipe in a golf course or the like, it is necessary to excavate soil along a pipe laying path with a width of at least 30 cm or more from the ground surface to a pipe burying depth by an excavator. Then, while the lawn is peeled by the width, the excavated soil is raised on the ground along the pipe laying path. Next, pipes were laid on the excavated pipe laying path, and soil backfill work was performed.
A new lawn was being pasted. In such a pipe laying operation, excavation of soil with a width of at least 30 cm or more is performed along a pipe laying path not only in a golf course but also on a road, and backfilling work and repair work are performed.

[0003]

In the conventional pipe burying method, a repair mark of 30 cm or more remains on the ground surface along the laying path, the appearance is poor, and a great deal of time and labor is required for excavation work. Was. In order to solve these problems, the present invention has the following configuration.

[0004]

According to the present invention, one side in the width direction constitutes a cutter section 1, and a fastening section 3 to which a flexible strip 2 for inserting a pig is fastened is provided at a lower portion thereof. The upper part is a blade 5 for burying a flat pipe connected to the vibration device 4. Further, in the pipe burying device of the present invention, the front edge of the cutter portion 1 of the blade 5 is formed in a stepped shape that gradually retreats downward, and the fastening portion 3 is provided with a wire locking hole, The frame 6 is connected to a driving vehicle 14 and is configured to move with the vehicle. The lower end of the vibration device 4 held by the driving vehicle 14 is connected to the blade 5.

Further, in the pipe burying method of the present invention, a pair of openings 8, 9 are excavated apart from each other, and the blade 5 of the pipe burying device is inserted into the soil from one of the openings 8,
One end of the flexible strip 2 is fastened to the fastening portion 3, and the driving vehicle 14 is moved from one opening 8 to the other opening 9.
To form a slit 10 in the soil, and a pig 11 having a diameter larger than the thickness of the blade 5 is fixed to the flexible strip 2 so that one opening 8 to the other To extend the lower portion of the slit 10 to move the pipe 12 to a position where the pipe 11 is expanded by the pig 11.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing a use state of a blade and a pipe burying device of the present invention, and shows a first step of a pipe burying method. FIG. 2 is a perspective view of a pipe burying blade of the present invention, FIG. 3 is an enlarged view of a part III in FIG. 2, FIG. 4 is an explanatory view showing a second step of the pipe burying method of the present invention, and FIG. FIG. 6 is a partially cutaway front view of the pig 11, and FIG.
7 is an explanatory view showing a third step of the pipe embedding method of the present invention.

A blade for burying a pipe according to the present invention is configured as shown in FIG. That is, the whole is formed in a flat plate shape, the cutter part 1 is provided on one side of the lower part, and the fastening part 3 is drilled at the lower end. The lower front edge of the cutter portion 1 is formed in a stepped shape that gradually retreats downward, and a number of carbide tips 1a are brazed and fixed to the lower front edge and the lower end surface as shown in FIG. The blade 5 is made of a tool steel plate having a high hardness, and soft steel plates are fixed to both upper half surfaces thereof. The upper half of the blade 5 is vertically movably supported by the flat tube guide 6c of the support frame 6, and a pair of guide rollers 6a provided on the flat tube guide 6c guides both sides of the blade 5. Note that a guide wheel 6b is provided at the tip of the support frame 6. This support frame 6
1 is detachably connected to the tip of the driving vehicle 14 as shown in FIG. 1, and the connection portion is pivotally connected to be slightly pivotable in the vertical direction. The driving vehicle 14 has an arm 13 in this example, and the vibrating device 4 is suspended by a suspending member 13a. Then, the holding portion 4 a provided at the lower end of the vibration device 4 grips the center of the upper end of the blade 5.

[0008]

[Piping burying method] The pipe burying apparatus is buried in the following manner. First, openings 8 and 9 are excavated at one end and the other end of the straight portion of the pipe laying path as shown in FIG. It is sufficient that the openings 8, 9 have a width of about 50 cm by a small excavator. Its width is such that both wheels provided on both sides of the driving vehicle 14 can be sufficiently straddled and one worker can enter the inside. As shown in FIG. 1, the vibration device 4 is hung on the arm 13 of the driving vehicle 14, and the center of the upper end of the blade 5 is gripped by the holding portion 4a. Then, the rear end of the support frame 6 is connected to the front end of the driving vehicle 14 so as to be rotatable to some extent in the vertical direction. Then, a straight line is displayed on the ground surface 15 between the openings 8 and 9. A rope may be used instead of the line.
Then, the blade 5 lifted by the driving vehicle 14 is inserted into the opening 8, and the guide wheel 6b is aligned with an excavation display line (not shown). Then, one end of the flexible strip 2 is locked to the fixing portion 3 of the blade 5.

In this state, the driving vehicle 14 is moved forward and the vibration device 4 is driven. Then, the blade 5 is moved forward by the driving vehicle 14 while vibrating in the vertical direction by the vibration device 4. As a result, the cutter 1
A thin slit 10 having a thickness of about 10 mm is formed. The slit 10 may be thinner than the thickness of the blade 5 due to dynamic pressure. However, below the slit 10, the flexible strip 2 has already been laid. In this way, the slit 10 is formed linearly from the opening 8 to the opening 9. next,
As shown in FIG. 4, the tip of the pig 11 is locked at the rear end of the flexible strip 2, and a new flexible strip 2 is connected to the rear end of the pig 11. The pig 11 can be formed as shown in FIGS. 5 and 6, for example. That is, the pig 11 has a spindle shape as a whole, and the locking ring 11a is fixed to the front and rear ends thereof. In this example, the guide vanes 11
b is provided. The guide wing 11b can be omitted. The flexible strip 2 is connected to both ends of the pig 11 thus formed, and the flexible strip 2 on the tip side moves through a suitable pulley 16 or the like, so that the pig 11 is opened. The bottom of the slit 10 is moved from 8 toward the opening 9. Due to the movement, the enlarged penetrating part is at the bottom of the slit 10
17 is formed. The diameter of the enlarged penetration portion 17 is preferably slightly larger than the diameter of the pipe to be embedded.

Next, as shown in FIG. 7, the front end of the pipe 12 is connected to the rear end of the flexible strip 2 via a connection fitting 2a. By pulling the flexible strip 2 in the direction of the arrow, the pipe 12
Are sequentially inserted into the enlarged penetration portion 17. And many plumbing
12 are connected via a pipe joint 12a, and the pipe 12 is laid over the entire length of the enlarged penetration portion 17. Note that the above example shows a golf course where a pipe for watering a lawn is buried. According to the experiment, the pipe laying work could be performed in a very short time with almost no damage on the upper surface of the lawn. Next, the pipe burying device can be used even under an asphalt road or the like. In this case, the asphalt is previously peeled off to a width of about several cm to 10 cm using a rotating diamond plate or the like, and then the steps shown in FIGS. 1, 4 and 7 are taken from the trace of the peeling. Then, sand is packed into the slits excavated by the blade of the present invention, and water is supplied to the slits to moisten and sand the sand. Next, crushed stones may be applied thereon and coated with asphalt. Thereby,
It is possible to lay pipes by making the repair width of asphalt extremely narrow. 8 and 9 are other blades 5 of the present invention and a partially enlarged view thereof.
Is formed such that the front edge of the cutter portion 1 is concave.

[0011]

The upper part of the blade for burying pipes of the present invention is connected to the vibration device 4, and one side in the width direction constitutes the cutter unit 1. And since the fastening part 3 to which the flexible strip material 2 for pig insertion is fastened is provided in the lower part, it moves while moving up and down by the vibrating device 4, thereby forming the slit 10. Minimizing the excavation width of the slit 10 may minimize damage on the ground surface 15 for laying pipes. Then, since the flexible strip 2 can be attached to the fastening portion 3, the enlarged through portion 17 can be formed below the slit by the flexible strip 2 via a pig.
Thereby, the pipe 12 having an outer diameter larger than the width of the slit 10 can be inserted into the enlarged penetration portion 17. Then, it is possible to efficiently form the slit for laying the pipe. Next, in the second aspect of the present invention, the front edge of the cutter portion 1 of the blade 5 is formed in a step-like shape that gradually retreats downward. Therefore, it is possible to quickly form the narrow slit 10 with good excavation efficiency and small power.

Further, in the pipe burying method according to the third invention, a pair of openings 8 and 9 are excavated at a distance from each other, and the blade 5 is inserted into the soil from one of the openings 8 so that the fixing portion 3 can be inserted into the soil. A slit 10 is formed in the soil by fixing one end of the flexible strip 2 and moving the driving vehicle 14 from one opening to the other opening. At the same time, a pig 11 having a diameter larger than the thickness of the blade 5 is fixed to the flexible strip 2 and moved from one opening 8 to the other opening 9 to expand the lower portion of the slit 10. Further, the pipe 12 is located at the position expanded by the pig 11.
Is to be inserted. By taking such a process, damage to the ground surface 15 can be minimized, and the pipes can be laid efficiently.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a use state of a blade and a pipe burying device of the present invention, showing a first step of a pipe burying method.

FIG. 2 is a perspective view of a blade for burying piping of the present invention.

FIG. 3 is an enlarged view of a part III in FIG. 2;

FIG. 4 is an explanatory view showing a second step of the pipe burying method of the present invention.

FIG. 5 is a partial cross-sectional view of the pig 11 in the same step.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is an explanatory view showing a third step of the pipe burying method of the present invention.

FIG. 8 is a side view of another blade of the present invention.

FIG. 9 is an enlarged view of a portion IX in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutter part 1a Carbide tip 2 Flexible strip 2a Connection metal fitting 3 Fixing part 4 Vibration device 4a Nipping part 5 Blade 6 Support frame 6a Guide roller 6b Guide wheel 6c Flat tube guide 8, 9 Opening 10 Slit 11 Pig 11a Locking ring 11b Guide wing 12 Piping 12a Fitting 13 Arm 13a Suspension device 14 Drive vehicle 15 Ground surface 16 Pulley 17 Enlarged penetration

Claims (3)

[Claims] 1. One side in the width direction constitutes a cutter unit 1,
A fixing portion 3 to which a flexible strip 2 for inserting a pig is fixed at a lower portion.
And a blade 5 for burying a flat plate having an upper portion connected to the vibration device 4. 2. An upper portion of the blade 5 according to claim 1 is held by a support frame 6 so as to be vertically movable, and a front edge of the cutter portion 1 of the blade 5 is formed in a stepped shape that gradually retreats downward. The fastening portion 3 is provided with a wire locking hole, and the support frame 6 is connected to a driving vehicle 14 so as to move with the vehicle.
The lower end of the vibrating device 4 held by the
Pipe burial equipment connected to 3. A pair of openings 8 and 9 are excavated while being separated from each other, and the blade 5 of the pipe burying device according to claim 2 is inserted into soil from one of the openings 8 so as to be inserted into the fastening portion 3. Fixing one end of the flexible strip 2 and moving the driving vehicle 14 from the one opening 8 to the other opening 9 to form a slit 10 in the soil; A step of fastening a pig 11 having a diameter larger than the thickness of the blade 5 to the strip 2 and moving it from one opening 8 to the other opening 9 to expand the lower portion of the slit 10; Inserting the pipe 12 into the position expanded by the method.