JPH0742877A - Method for embedding pipe - Google Patents

Abstract

PURPOSE:To provide a method for embedding pipes, whereby a plurality of pipes of unit length joined together into a desired length can be smoothly embedded in the ground without digging ditches. CONSTITUTION:Holes are dug at both ends of a piping line, and a plurality of pipes of predetermined length are joined together with their connections secured together by an adhesive to prepare a pipe P longer than the span between the holes dug at both ends of the piping line. A drill 61 is provided in the lower portion of or behind a knife 4 for cutting into the ground, and the end of the pipe P is disposed behind the drill 61. Next, the knife 4 is moved by a movement means along the piping line, and cuts into the ground to haul the pipe P while using the drill 61 to dig holes in appropriate depth in the ground each of which is equal to or greater than the pipe P in diameter, thereby laying the pipe under the ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe burying method for burying a pipe in the ground.

[0002]

2. Description of the Related Art Conventionally, as a method of burying a pipe in the ground, as shown in FIG. 11, a groove a having a predetermined width is scooped along a pipe burying position by a scoop or a trencher.
After digging, a plurality of pipes b1 are connected by a socket c to a length corresponding to the length of the groove a, and this pipe b is put in the groove a by several people or in the groove a. The pipes b were arranged in the ground by arranging the pipes b in the grooves a by successively connecting the pipes b and then backfilling the excavated soil d.

[0003]

However, the above-mentioned conventional method has many problems as described below.

Since the excavated soil d is usually piled up along the groove a, the soil d interferes with the burying work of the pipe b and gets into the shoes of the worker or stains clothes, resulting in poor workability. bad.

Soil d piled up along the groove a
When it rains, it flows out to the surroundings, so that it pollutes the surroundings and interferes with walking, and also enters the groove a.

As a solution to the above-mentioned problems (1) and (2), the soil d excavated from the groove a is carried to a place apart from the groove a, and then carried again after the pipe is arranged. The work of carrying the excavated soil d is difficult and the burden on the operator is heavy.

If the ground is clay, rainwater collects in the dug groove a, which hinders pipe installation work.

In the case where the pipe b is placed in the groove a and then the groove a is backfilled, a gap e is easily formed on the lower surface of the pipe b during the backfilling as shown in FIG. When the pipe b is embedded with a gap e formed therein, when the pipe b is filled with a liquid such as water or a chemical solution, the pipe b hangs down to the portion of the gap e due to the weight of the liquid,
This causes damage or breakage of the pipe b (including the disconnection of the pipe b1 from the socket c). In particular, when the pipe b is arranged in a situation in which the width of the groove a is narrow, the depth is large, the pipe diameter is large, and the soil is lumpy, such as clayey soil or stoney soil, a gap is easily formed. However, the above problem occurs.

When the excavated soil d is backfilled in the trench a, the upper surface is raised as shown in FIG. 12 in anticipation of the depression of the soil d. This raised portion d1 is used for walking or running of a vehicle. Cause trouble. Especially for golf courses,
It interferes with playing golf.

Even if the soil d is heaped up in anticipation of depression, since the backfilled soil d is soft, the upper surface of the groove a is often depressed d2 more than expected as shown in FIG. Similar to the above, the portion d2 hinders walking and running of a car, and also hinders golf play.

When the soil d backfilled as described above is depressed, the pipe embedded in the soil d is also depressed (see the solid line from the alternate long and short dash line in FIG. 13). At this time, there is no problem if the degree of depression of the pipe b is uniform over the entire length of the pipe, but as shown in FIG. 14, if the degree of depression of the pipe b becomes uneven due to the stones f, etc. A large force is locally applied to this blocked portion, which causes damage or breakage of the pipe.

Therefore, as a solution to many problems described above, there is a method of directly burying the pipe in the ground by pulling the pipe into the ground while making a cut in the ground without digging a groove. Conceivable. However, pipes buried in the ground cannot be wound in a reel shape like electric wires and cables. Therefore, a pipe formed to a predetermined length that can be carried is usually desired by an appropriate joint on site. There is a demand for a method of smoothly burying a pipe formed by connecting a plurality of pipes to a desired length in the ground without slipping at the connecting point.

[0013]

The pipe burying method of the present invention is a pipe burying method of burying a pipe of an appropriate length in the ground, and the pipe burying depth is set at both ends on the pipe arranging line. While digging holes of depth corresponding to
By connecting a plurality of pipes of a predetermined length with a joint and fixing the connecting portion with an adhesive, a pipe longer than the distance between the holes dug on both ends of the planned pipe arrangement line is formed in advance. Provide a perforator at the bottom or rear of the knife to put a notch in, place the end of the pipe behind the perforator,
By moving the knife along the planned pipe line by the moving means, while making a cut in the ground with the knife, while making a hole with the same or larger diameter as the pipe diameter at an appropriate depth in the ground with the punching tool. The pipe is towed and the pipe is placed through the ground.

[0014]

[Operation] While digging holes at both ends on the planned pipe arrangement line, by connecting a plurality of pipes of a predetermined length by joints and fixing the connecting portions with an adhesive, both ends on the planned pipe arrangement line are connected. A pipe longer than the space between the dug holes is formed in advance, and this pipe is arranged on the extension of the pipe arrangement line, and then a knife is arranged in the hole in which one end of the pipe is arranged, and the knife. Connect one end of the pipe to a suitable place through a connecting member, and use a knife to make a notch in the ground along the expected pipe placement line by a moving means, and connect the pipe to the ground by a perforating tool of the connecting member. One end of the pipe is pulled while opening the same or a large hole, thereby smoothly arranging the pipe in the ground.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic structure of a pipe burying apparatus for carrying out the pipe burying method according to the present invention.

In FIG. 1, reference numeral 1 denotes a traveling vehicle (moving means) capable of traveling appropriately by a driving operation of a driver, and a pipe burying device 2 is connected to a rear portion of the traveling vehicle 1 in a traveling direction via a connecting member 11. Has been done.

As shown in FIGS. 1 and 2, the pipe burying device 2 is provided with a grass cutting blade 3 for cutting the lawn G laid on the ground into a slit shape, and a serial arrangement behind the grass cutting blade 3 in the traveling direction. The knife 4 is provided, a lawn pressing member 5 disposed near both sides of the knife 4, and a connecting member 6 that connects one end of the pipe P to an appropriate position of the knife 4.

The lawn cutting blade 3 is the pipe burying device 2
1 and 2, the cutting blade 3a is inserted from the lawn G into the ground for a predetermined length as the traveling vehicle 1 travels during the pipe burying work shown in FIGS. In this state, the lawn G is cut to cut so-called long tufts and strong roots of the lawn G.

The knife 4 is for cutting a lawn G by the lawn cutting blade 3 and then making a cut in the ground below the lawn G. The length of the cutting blade 41 is a pipe burial. It is set to correspond to the depth. This pipe burial depth is usually set to about 1 m to 0.2 m in consideration of the environment of the place where the pipe P is buried, and it is deeply buried when there is a risk of damage to the pipe P due to freezing or vehicle passage. To be done.

At the upper end of the knife 4, the connecting member 1
1 is connected to the vibration generator 42. When the pipe burying operation is performed, the vibration generator 42 vibrates the knife 4 as the traveling vehicle 1 travels to correspond to the pipe burying depth. Make a cut in the ground at a depth.

The turf pressing member 5 prevents the turf G from being dug up by pressing the lawn G on both sides of the slit cut by the turf cutting blade 3 from above when cutting in the ground by the knife 4. The pipe burying device 2 is disposed on the left and right sides of the knife 4 via a bracket 51. The lower surface, which is the lawn pressing surface of the lawn pressing member 5, is arranged such that the forward end portion of the traveling vehicle 1 in the traveling direction is higher than the lawn surface, and is curved so as to press the upper surface of the lawn G at the rear portion. There is.

The above-mentioned lawn cutting blade 3, knife 4 and lawn pressing member 5 are connected to the traveling vehicle 1 via the connecting member 11, and are configured to be movable in the vertical direction by the expansion and contraction operation of the cylinder 12. At the same time, it can be appropriately removed from the traveling vehicle 1.

The connecting member 6 is a punching tool 61 connected to the lower end of the knife 4, and is connected to the punching tool 61.
Holder 6 for holding one end of the pipe P to be buried
It is composed of 5 and.

When the pipe P is buried, the perforation tool 61 is for forming a through hole for the pipe P in the buried portion of the pipe P in advance so as to assist the pulling of the pipe P into the ground. The punching tool 61 is formed in a conical shape in the illustrated example, and the small diameter portion is connected to the lower end portion of the knife 4 via a bracket 63 by a connecting member 62 such as a chain with the small diameter portion being forward in the traveling direction. Has been done. Punch 61
The size of the large-diameter portion is equal to or slightly larger than the diameter of the pipe P.

The holder 65 is made of a bag-shaped net member such as a Chinese chain.
Wrap vinyl tape, gum tape, rubber band, etc. around one end of the pipe P to form irregularities on the surface of the pipe P.
This net member is put on one end of the pipe P, and a band, a vinyl tape 66, or the like is wound on the pipe P so that the pipe P
Firmly hold one end of. The tip of the holder 65 is connected to the large diameter portion of the perforator 61 via a connecting member 67.

Here, as the pipe P, a plastic pipe having appropriate strength is used, and as shown in FIG. 3, a predetermined length suitable for transportation or the like (for example, 4 m,
It is produced by connecting a plurality of pipes P1 formed to have a length of 5.5 m or the like with a socket (joint) P2 and adhering each connecting portion.

Reference numeral P4 shown in FIGS. 1 and 2 is a cap for closing one end opening of the pipe P held by the holder 65, and one end of the pipe P when the pipe P is buried by the cap P4. Soil is prevented from entering the pipe P through the opening. Moreover, the code | symbol C shown in FIG. 1 is the lawn curing board laid on the lawn G.

4 to 6 show other embodiments of the grass cutting blade 3, the knife 4, the grass pressing member 5, and the connecting member 6 which constitute the pipe burying device 2.

In the example shown in FIG. 4, the cutting blade 3 of the turf cutting blade 3
a is formed on the front edge, and the lawn G is cut at this front edge. Further, the lawn pressing member 5 is integrally formed on the left and right, and the knife 4 is arranged in a U-shaped notch 52 formed at the center of the front part. Furthermore, the punching tool 6 for the connecting member 6
1 is directly connected to the lower end of the knife 4 by a pin. This punching tool 61 is also formed to have a size equal to or slightly larger than the diameter of the pipe P, similarly to the punching tool described above.

In the example shown in FIG. 5, two lawn cutting blades 3 are provided, and the lawn G is cut by these two lawn cutting blades 3, 3. Further, the punching tool 61 of the connecting member 6 is formed in a spherical shape or an elliptical shape. The shape of the punching tool 61 is not limited to the shapes of the present embodiment and the embodiments described above, and if the size is equal to or slightly larger than the diameter of the pipe P,
For example, it may be a hemisphere, a triangular pyramid, a quadrangular pyramid, or the like.

Further, it is shown that a protective cover 68 may be covered to protect the tip of the pipe P and prevent the shoulder of the holder 65 from being worn out by friction with the soil. Further, the punch 61 is omitted and the protective cover 68 is provided.
Can also be used as a punch.

In the example shown in FIG. 6, the cutting blade 41 of the knife 4 is curved forward from the upper end to the lower end. Further, the punching tool and the holding tool that form the connecting member 6 are integrated. Specifically, a cap 6a, which is slightly larger than the pipe P, is inserted into one end of the pipe P, the cap 6a and one end of the pipe P are held by a pin connection 6b, and the tip of the cap 6a is connected to the knife 4 via a chain 6c. It is connected to the lower end of the. The cap 6a also has a function of preventing soil from entering the pipe P.

Next, the operation of the pipe burying device 2 thus constructed will be described together with the pipe burying method of the present invention.

First, as shown in FIG. 7, holes 7a and 7b having a depth corresponding to the burying depth of the pipe P are dug at both ends of the planned pipe arrangement line X. At this time, by placing the dug up soil 71 on the sheet 72, the surroundings are not polluted and the backfilling can be easily performed.

Further, while digging the holes 7a and 7b,
A plurality of pipes P1 are connected by a socket P2, and each connecting portion is bonded in advance to produce a pipe P having a length L2 slightly longer than the pipe burying length L1.

Then, the pipe P manufactured as described above is arranged on an extension of the pipe arrangement line X.

After that, the traveling vehicle 1 is moved and placed in the vicinity of the hole 7a, and one end of the pipe P is connected to the knife 4 of the pipe burying device 2 connected to the traveling vehicle 1 through the connecting member 6. Then, the pipe burying device 2 is arranged in the hole 7a for starting the pipe burying operation according to the pipe burying depth H (see FIG. 9).

Then, the traveling vehicle 1 is caused to travel along the planned pipe arrangement line X while operating the vibration generator 42, so that the pipe P is embedded in the ground.

Specifically, as shown in FIG. 2, the traveling vehicle 1
First, the lawn cutting blade 3 continuously cuts the lawn G along the planned pipe arrangement line X to form the slit G1, and then along the slit G1 of the lawn G, the lawn pressing member is driven. While pressing the lawn G on both sides of the slit G1 with 5, the knife 4 cuts into the ground. At this time, since the lawn G is sufficiently cut by the lawn cutting blade 3, the root of the lawn G is not entangled with the lawn pressing member 5 or the knife 4, and the lawn G is suppressed by the lawn pressing member 5. Therefore, the lawn G is not dug up by the knife 4.

As the knife 4 makes a cut in the ground, the pipe P connected to the knife 4 is cut.
One end of is pulled through the connecting member 6, is guided while making a hole in the ground by the punching tool 61 of the connecting member 6, and advances in the ground, and the pipe burying device 2 reaches the other hole 7b,
As shown in FIG. 8, when the pipe P is in the ground between the holes 7a and 7b,
It is placed through.

Here, as shown in FIG. 9, it is preferable that the pipe P sequentially fed into the ground through the hole 7a is fed in a substantially horizontal state when entering the ground. It is preferable to push down the pipe P with the operator's foot F. Further, it is preferable that the distance L3 from when the pipe P enters the hole 7a from the ground to when it is sent underground is set to be large according to the diameter of the pipe P. For example, the diameter of the pipe P is 2
When the diameter is 0φ, θ shown in FIG. 9 is preferably about 50 ° or less, and when the diameter of the pipe P is 50φ, θ is preferably about 30 ° or less. If the above-mentioned θ is large, the connecting portion of the pipe P may be damaged, or the pipe P may be bent to meander and rotate in the ground.

Further, as shown in FIG. 10, the pipe P entering the ground through the hole 7a may be pushed down by an appropriate pushing device 8 regardless of the operator. This depressing device 8
An upper part is provided with a heavy object W, and a vertically adjustable roller 81 is provided at a lower end hung from the heavy object W. The weight of the heavy object W pushes down the pipe P with the roller 81, Smooth rotation of the roller 81 causes the pipe P
Send out. Reference numeral 82 in FIG. 10 is a support member for smoothly feeding the pipe P from the ground into the hole 7a. Without this support member 82, the pipe P would be bent sharply at the Y portion, which would force the pipe and damage it. Reference numerals 83 and 84 are paddings such as cloth and grass pieces, and rollers may be provided in place of the paddings 83 and 84.

The traveling speed of the traveling vehicle 1, that is, the cutting speed of the knife 4 is set in consideration of the hardness of the ground and the diameter of the pipe P, and is usually 0.3 m / min to 7 m / min.
Minutes, preferably about 1 m / min to 4 m / min.

When it is expected that there is a large stone or bedrock, first, without attaching the pipe P, make a notch in the ground with only the knife 4 to check whether or not the pipe can penetrate, and After securing the route, it is preferable to attach the pipe P to the knife 4 and perform the pipe burying operation.

Also, when burying a large-diameter pipe P, the friction resistance between the ground and the pipe P and the socket P2 increases, and the pipe P is difficult to bend and it is difficult to avoid stones. Similarly to the above, first, it is preferable that the pipe P is not attached, and a cut is made in the ground by only the knife 4 to check the pipe penetration route.

Further, in this example, the pipe is buried in the ground under the lawn, but the present invention can be applied to a case where the pipe is buried in the ground without a lawn.
In this case, the pipe burying device 2 in this embodiment
The grass cutting blade 3 and the grass pressing member 5, which are the constituent parts of the above, are unnecessary, and the knife 4 and the connecting member 6 may be provided.

[0048]

As described above, according to the pipe burying method of the present invention, holes are formed at both ends on the planned pipe arranging line, and a plurality of pipes of a predetermined length are connected by joints to connect them. By fixing the parts with an adhesive, a pipe longer than the space between the holes dug at both ends of the planned pipe arrangement line is formed in advance, and a punching tool is provided below or behind the knife for making a cut in the ground. By arranging the end of the pipe behind the perforator and moving the knife along the planned pipe placement line by the moving means, a notch is made in the ground by the knife, and an appropriate depth in the ground is achieved by the perforator. Since the pipe is towed while making a hole with the same or larger diameter as the pipe, and the pipe is placed through the ground, the excavation that accompanies the conventional work such as digging a groove and filling the pipe in this groove Many problems such as swelling of the soil, sinking of the soil and damage to the embedded pipes have been resolved, and in the case of a golf course, construction can be done during golf play without hindering play, and multiple connections can be made. Thus, the pipe formed to have a desired length can be smoothly buried in the ground without being displaced at the connecting portion or the like.

[Brief description of drawings]

FIG. 1 is a side view showing a pipe burying device according to the present invention.

FIG. 2 is a partially enlarged perspective view showing a pipe burying device according to the present invention.

FIG. 3 is a cross-sectional view showing the structure of a pipe.

FIG. 4 is a partial perspective view showing another embodiment of the pipe burying device.

FIG. 5 is a partial perspective view showing another embodiment of the pipe burying device.

FIG. 6 is a partial perspective view showing another embodiment of the pipe burying device.

FIG. 7 is a diagram illustrating a pipe burying method according to the present invention.

FIG. 8 is a cross-sectional view taken along the line AA in FIG. 2 showing a buried state of the pipe.

FIG. 9 is a diagram showing an arrangement state of pipes in holes.

FIG. 10 is a diagram showing an arrangement state of pipes in holes.

FIG. 11 is a perspective view showing a conventional pipe burying method.

FIG. 12 is a cross-sectional view showing a state in which a pipe is buried by a conventional pipe burying method.

FIG. 13 is a sectional view showing a state in which a pipe is buried by a conventional pipe burying method.

FIG. 14 is a cross-sectional view showing a state in which a pipe is buried by a conventional pipe burying method.

[Explanation of symbols]

 1 traveling vehicle (moving means) 4 knife 6 connecting member 61 punching tools 7a, 7b holes G lawn P pipe X pipe planned line

Claims (1)

[Claims] 1. A pipe burying method for burying a pipe of an appropriate length in the ground, which comprises digging a hole having a depth corresponding to the burying depth of the pipe at both ends on a planned pipe arrangement line, By connecting a plurality of pipes of a predetermined length with a joint and fixing the connecting portion with an adhesive, a pipe longer than the distance between the holes dug on both ends of the planned pipe arrangement line is formed in advance. A piercing tool is provided at the bottom or rear of the knife to make a cut in, the end of the pipe is arranged behind the piercing tool, and the knife is moved along the planned pipe arrangement line by the moving means. A method for burying a pipe, characterized in that the pipe is towed while making a notch in the hole and making a hole having a diameter equal to or larger than the diameter of the pipe at an appropriate depth in the ground by a punching tool and penetrating the pipe into the ground. .