JPH10292779A - Pipe burying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct the excavation of a ground and the discharge of excavated materials efficiently. SOLUTION: The pipe burying device has an arcuate flat-shaped leader pipe 8, in which both side sections have a radius having approximately the same diameter as or slightly larger than a pipe to be buried, and a cutting edge section 9 having structure, which has the same sectional external shape as the leader pipe 8 and in which a plurality of cylindrical sections are juxtaposed, and being connected at the front end section of the leader pipe 8, and is constituted so that a plurality of the pipes are buried simultaneously into a ground. Jet nozzles 16 for excavation are disposed into the center of the cutting edge section 9 while a section between the cutting edge section 9 and the leader pipe 8 is closed by a funnel-shaped partition wall 10 with air intake ports 20 capable of being opened and closed by remote control at that time, a suction pipe 19 for removing excavated materials communicated with an excavation bit through an earth removing pipe is arranged into the central place of the leader pipe 8, and an air suction system installed on the outside of the excavation bit is connected to the earth removing pipe while excavation rods 11 are disposed into both side sections excepting the central place and excavation heads 12 at the front ends of the excavation rods 11 are arranged at the places of the front end of the cutting edge section 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe burying device for burying a plurality of pipes such as electric conduits and sewage pipes at the same time in the ground.

[0002]

2. Description of the Related Art For example, in order to lay an electric wire underground, a pipe is buried underground and an electric wire is passed through the pipe. Generally, a small-diameter pipe is used as the above-mentioned pipe, and a plurality of pipes are juxtaposed in order to correspond to the type of electric wire.

As an apparatus capable of burying such a plurality of pipes at once in the ground, a plurality of cylindrical portions having substantially the same shape or a slightly larger outer diameter as the pipe to be buried are arranged side by side and integrated. A leading conduit having such a shape, a cutting edge having the same cross-sectional outer shape as the leading conduit and connected to a tip end of the leading conduit, wherein an auger screw is inserted through the cutting edge from the leading conduit to form a cutting edge. 2. Description of the Related Art A pipe burying device is used in which a ground at the tip of a cutting edge is excavated by a drilling head, and is sequentially pushed to bury a subsequent pipe.

[0004]

However, in the above-mentioned conventional pipe burying apparatus, the excavated earth and sand is transported backward by the auger screw blades and is carried out of the excavation pit to the ground. In the case of a small-diameter pipe as described above, there is a problem that the soil removal efficiency is extremely poor and that the gravel cannot be treated.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pipe burying apparatus capable of efficiently discharging excavated earth and sand, and capable of discharging large gravels even if they exist. As a means for solving the above-mentioned problems, the present invention provides a flat-shaped front pipe having an arc shape having substantially the same diameter or a slightly larger radius as the pipe to be buried on both sides, and this front pipe. A pipe having the same cross-sectional outer shape and having a structure in which a plurality of cylindrical portions are juxtaposed, and having a cutting edge connected to a tip end of the leading pipe, wherein a plurality of pipes are simultaneously buried in the ground In the embedding device, a jet injection port for excavation is disposed in the center of the blade port, and a funnel-shaped partition wall having an air intake port that can be remotely opened and closed between the blade port and the leading pipe is provided. And within the central position of the tip conduit In order to communicate with the excavation pit, a suction pipe for excavating excavated earth and sand for discharging the earth to the ground is provided, and an air suction device installed outside the excavation pit is connected to the suction pipe, and other than the center position. Excavation rods are arranged in both sides, and the excavation head at the tip is arranged at the tip position of the cutting edge.

Preferably, a suction pipe is provided at the end of the excavated earth and sand discharging suction pipe so as to be slidable in the axial direction, and the blade port comes into contact with the tip of the suction pipe when the suction pipe advances. A closing body that can be closed by providing a chisel for crushing gravel on the side facing the tip of the suction pipe. When the gravel is present at the tip of the suction pipe or the soil is compacted, the suction pipe is closed. Preferably, they can be advanced so that they can be broken by the chisel.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows the entire configuration of a pipe burying apparatus according to the present invention, and FIG. 2 shows a horizontal cross section of the essential part.

The basic configuration of the pipe burying device shown in FIG. 1 is similar to the conventional one, in which a drive unit 3 is mounted on a guide rail 2 laid on the bottom of a drilling pit 1 cut from the ground surface so as to be able to move forward and backward. The drive unit 3 has a propulsion cylinder 5 interposed between the drive unit 3 and the reaction force receiver 4 in the excavation pit 1, and the drive unit 3 advances along the guide rail 2 by driving the extension of the propulsion cylinder 5 (see FIG. 1 (left line).

At the front of the drive section 3, there is provided a horizontally long pipe receiving section 7 on which rear ends of a plurality (three in the figure) of buried pipes 6 are abutted side by side.

A leading pipe 8 is connected to the tip of the buried pipe 6. As shown in FIG. 5, a sectional view taken along the line AA of FIG. 5, the front conduit 8 has a flattened length in the form of an arc having substantially the same diameter or a slightly larger radius as the pipe 6 in which the both sides 8a are buried. It has a circular shape.

As shown in the front view of FIG. 4, the blade opening 9 has a flat shape having cylindrical portions 9a, 9a on both sides so as to have the same outer shape as that of the front conduit 8 as a whole. A funnel-shaped partition wall 10 that is connected to the distal end of the leading conduit 8 and that opens toward the inside of the blade opening 9 is provided at the connection position. As is well known, the blade port 9 is connected to the leading conduit 8 via a seal so as to be able to swing slightly up, down, left and right, and the path can be corrected by a direction correcting cylinder (not shown).

The cylindrical portions 9 located on both sides of the blade 9
The drilling rods 11, 11 are inserted into the a, 9a, and the drilling heads 12, 12 at the distal ends thereof are located within the distal end of the blade port 9, and the screw blades 13, 13 of the drilling rods 11, 11 are disposed.
The back of the excavating heads 12, 12 and the funnel-shaped bulkhead 1
0, and the rod portions 11a, 11a of the excavating rods 11, 11 are inserted into casings 14, 14 disposed in the front conduit 8 behind the bulkhead 10,
The drive unit 3 is driven to rotate by a hydraulic motor. Reference numerals 15 and 15 denote joint portions which bend because the excavating heads 12 and 12 follow up when the cutting edge 9 is deflected with respect to the leading conduit 8.

At the central cylindrical portion 9b of the blade port 9, jetting ports 16 for excavation for jetting jet water toward its tip are arranged, and pressurized water is supplied to these ports 16 and 16. Pipes 17 are connected to a pump unit 18 (shown in FIG. 1) on the ground through the excavation pit 1. This jet pressure is 10 kg / cm ² -30 kg /
cm ² .

A suction pipe 19 for excavating excavated earth and sand is provided inside the center position of the leading pipe 8.
An air intake port 20, 20 is opened in the partition wall 10 in front of the inside, so that the inside of the front pipe 8 and the inside of the blade port 9 communicate with each other.

A suction pipe 21 of a required length is slidably fitted to the distal end of the suction pipe 19, and a pair of left and right hydraulic pressures having a base mounted on a support wall 22 of the leading conduit 8 is attached to the suction pipe 21. The piston rods of the cylinders 23, 23 are connected to each other, and lids 24, 24 for closing the air intake ports 20, 20 are provided at the distal ends of the piston rods.

The suction pipe 21 is provided with hydraulic cylinders 23, 23.
A closing body 25 is provided in the blade port 9 at a position where the tip of the suction pipe 21 reaches when the lids 24 and 24 come into close contact with the air intake ports 20 and 20 by the operation of the above. A chisel 26 is provided at 25 for entering the tip of the suction pipe 21 when the suction pipe 21 moves forward and destroying earth and sand or gravel clogged in the suction pipe 21.

As shown in FIG. 1, the rear of the excavated sediment discharge suction pipe 19 is connected to a reserve tank 28 through a suction hose 27, and the reserve tank 28
9 (generically referring to a negative pressure suction mechanism or the like using a vacuum pump or a blower). 3
Reference numeral 1 denotes a power source (generator).

Next, the operation of the above embodiment will be described.

The driving section 3 is retracted, the rear ends of the buried pipes 6, 6, 6 are set in the pipe receiving section 7, and the excavating rods 11, 11 are placed after the leading pipe 8 is disposed facing the ground. The jet water is jetted from the jet jet ports 16 for excavation while being rotated. As a result, the excavation rod 1
Excavation is performed by cooperation of the excavation heads 12 and 12 at the tip ends of the jets 1 and 11 and the jet water jetted from the jet jets 16 and 16.

On the other hand, the suction mechanism 29 is driven to
To apply a negative pressure to the suction pipe 19 for excavating earth and sand.
At this time, the suction pipe 21 is in the retracted position (the position shown by the solid line in FIG. 2).
Place.

The earth and sand excavated as described above is taken into the blade opening 9 by the screw blades 13, 13, and the earth and sand taken in is sucked from the tip of the suction pipe 19 and sent to the rear thereof. It is collected in a reserve tank 28 through a hose 27. The air for this suction is supplied from the excavation pit 1 through the buried pipes 6, 6,.
The air is sucked into the suction pipe 19 from the air intake ports 20.

When the intake of excavated earth and sand is stopped when the buried pipe 6 is added or the work is interrupted, the hydraulic cylinders 23, 2
3 is operated to advance the suction pipe 21, and the tip of the suction pipe 21 is brought into contact with the closing body 25 to close the tip of the suction pipe 21.
At this time, the closing lids 24, 24 also move forward to move
Are also closed.

When earth and sand are condensed or gravels are present at the end of the suction pipe 21, when the abutment comes into contact with the closing body 25, the crushed sediment and gravels are fragmented by the chisel 26. So that it does not hinder the suction of water. In addition, this subdivision is not limited to when the work is interrupted, and when an abnormality is detected in the suction of the earth and sand, it is determined that clogging of the gravel or the consolidation of the earth and sand has occurred, and these operations are immediately eliminated by performing the above operation. be able to.

In the illustrated embodiment, a case is shown in which three buried pipes are buried in parallel. However, the number of buried pipes can be appropriately increased or decreased according to specifications.

[0026]

As described above, according to the first aspect of the present invention, the excavated ground excavated at the time of burying the pipe is excavated by the cooperation of the excavating head and the jet water, so that highly efficient excavation can be performed. The excavated earth and sand is sucked and discharged to the ground through a suction pipe, so that the discharging effect can be significantly improved.

According to the second aspect of the present invention, even if the tip of the suction pipe is clogged with gravel or earth and sand, the gravel and the compacted earth and sand can be easily and quickly crushed simply by moving the suction pipe forward, thereby improving the working efficiency. Can be significantly increased.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration example of the present invention.

FIG. 2 is a horizontal sectional view showing a main part of one embodiment of the present invention.

FIG. 3 is a side view of the center longitudinal section of FIG. 2;

FIG. 4 is a left front view of FIG. 2;

FIG. 5 is a sectional view corresponding to AA in FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 excavation pit 3 drive unit 5 propulsion cylinder 6 buried pipe 8 leading pipe 9 cutting edge 10 partition wall 11 excavation rod 12 excavation head 13 screw blade 14 casing 16 excavation jet injection 18 pump unit 19 suction pipe 20 air intake 21 suction Pipe 23 Hydraulic cylinder 24 Lid for closing air intake 25 Closing body 26 Chisel 28 Reserve tank 29 Suction mechanism 31 Power supply

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Jun Hasegawa 2-9-118 Honjohigashi, Kita-ku, Osaka-shi, Osaka Inside Kanden Kogyo Co., Ltd. (72) Inventor Hiroshi Ueno Toji Honjo, Kita-ku, Osaka-shi, Osaka No. 9-18, Kanden Kogyo Co., Ltd. (72) Inventor Toshiyasu Akiha Toshiyasu Akiha 1293 Tento-cho, Hanamigawa-ku, Chiba-shi, Chiba Sanwa Kikai Co., Ltd. (72) Inventor Akihiro Ono 227-34 Hojo, Himeji-shi, Hyogo Ichikura Giken Co., Ltd.

Claims (2)

[Claims] 1. An arcuate flat front end pipe having substantially the same diameter or a slightly larger radius as a pipe to be buried on both sides, and a plurality of cylindrical sections having the same cross-sectional outer shape as the front end pipe. A pipe burring device having a side-by-side structure and being connected to a tip end of the leading conduit, wherein a plurality of pipes are buried in the ground at the same time. While disposing a jet jet for use, the space between the blade port and the leading conduit is closed by a funnel-shaped partition having an air intake that can be opened and closed by remote control, and inside the central position of the leading conduit is An excavation soil suction pipe for discharging soil to the ground in communication with the excavation pit is provided, and an air suction device installed outside the excavation pit is connected to the suction pipe, and the suction pipe is provided on both sides other than the center position. A drilling rod and place the drilling head at the tip of the drilling Pipe burying device being characterized in that disposed at a position. 2. A suction pipe is slidably provided in a tip end of the excavated earth and sand discharging suction pipe in an axial direction, and closes at the blade opening portion when the suction pipe advances to abut on the tip of the suction pipe. 2. The pipe burying device according to claim 1, further comprising a closing member which can be closed, and which has a chisel for crushing gravel on a side facing a tip of the suction pipe.