JPS59199996A - Pipe embedding apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a management installation device, and more specifically, the present invention relates to a management installation device that excavates a hole in the ground that has a diameter larger than the outer diameter of the excavation machine main body and a buried pipe. This relates to a management installation device that discharges all excavated earth and sand into a vertical shaft through the annular gap formed between the pipe and the pipe, and buries the entire buried pipe in the ground.

Currently, in order to bury all underground pipes with a diameter of 1000 mm or less, the mainstream method is to use a propulsion method that propels the buried pipe itself using a pipe propulsion means installed in the starting shaft, such as a hydraulic cylinder, instead of the conventional cut-and-cut method. ing.

This propulsion method includes a consolidation method in which the rear part of the buried pipe is simply pushed and the tip of the buried pipe is pushed out while being consolidated. This consolidation method is used especially when the ground is soft, but it does not require a powerful sword for propulsion, and since a large force acts on the buried pipe, it is likely to cause damage to the buried pipe. If the passage cross section is a non-uniform layer, the pipe line will deviate from the position where it should be buried, resulting in poor directional accuracy.

Therefore, a rotary excavator whose outer diameter is larger than the outer diameter of the excavator and the buried pipe is installed at the front of the excavator, and while the rotary excavator is rotated to excavate the ground, a hydraulic cylinder is used to completely remove the buried pipe. A rotary excavation control system that propels the buried pipe, and a vibrating excavator whose outer diameter is larger than the excavator itself and the buried pipe are installed at the front of the excavating machine. A new vibrating excavation management installation device has been developed, in which the buried pipe is fully propelled by a hydraulic cylinder while excavating the ground by vibrating in a direction perpendicular to the center line, and was previously proposed. .

The above-mentioned rotary excavation method rotates the rotary excavator while injecting all of the viscosity imparting material near the excavation surface, and at the same time excavates the ground, the excavated soil and the viscosity imparting material are all stirred and mixed, resulting in highly viscous liquid mixed soil. The viscous liquid mixed with earth and sand is forced to be fed to the starting shaft side through the entire annular gap formed between the excavation hole, the excavator main body, and the buried pipe. In addition, in the above-mentioned vibratory excavation method, the vibrating excavator is fully vibrated while injecting the viscosity imparting material near the excavation surface, and the vibration excavates the ground finely.At the same time, the excavated soil and the viscosity imparting material are stirred and mixed by vibration. The viscous liquid mixed earth and sand are made into highly viscous liquid mixed earth and sand, and the viscous liquid mixed earth and sand are pumped to the starting shaft side through the entire annular gap formed between the excavation hole, the excavator main body, and the buried pipe. .

Since the above-mentioned management equipment has a small diameter and there is no space to install an earth removal device inside the pipe, excavated earth and sand are not taken into the excavation machine body and discharged immediately after excavation, and the outer diameter If the excavation tool is larger than the outside diameter of the excavator main body and the buried pipe (a rotating excavator installed at the front of the excavator main body or a vibrating excavator installed at the front of the excavator main body), the excavator main body and Formed between the excavation hole whose diameter is larger than the outer diameter of the excavating machine and the buried pipe, and the overcut, that is, the outer diameter of the excavating machine and the buried pipe. The annular gap is used as a passageway to discharge the slurry-formed viscous liquid-mixed earth and sand into the starting shaft. The annular gap also has the effect of reducing the frictional resistance between the earth, the excavator main body, and the buried pipe, thereby reducing the propulsive force.

However, the above-mentioned management equipment is not suitable for viscous liquid mixed soil.
Since the excavator body is floating in the sand, if the soil quality of the ground is uneven, the excavator body will bend toward the side with weaker resistance. In addition, the weight of the excavator itself and the buried pipes and the specific gravity of the viscous liquid mixed earth and sand rarely match, so if the weight is greater than the buoyancy, the excavation machine will move downward, and the buoyancy will be greater than its own weight. The main body of the excavator bends as it receives the force upward. Therefore, the above-mentioned management equipment has a problem of poor straightness.

The present invention aims to provide a complete management equipment that solves all of the above-mentioned problems.

The present invention is characterized in that a convex portion is provided on the outer circumferential side of the excavator main body in a radial direction that is equal to or slightly larger than the outer diameter of the excavator.

Hereinafter, two examples of the embodiments of the management equipment of the present invention will be described with reference to the accompanying drawings.

1 to 6 show an entire embodiment of the management equipment of the present invention, FIG. 1 is a schematic diagram of the entire management equipment of the invention, and FIG.
The figure is a vertical cross-sectional view of the main body of the excavator, and Figure 6 is I in Figure 2.
N-]1[ is a cross-sectional view taken along the line.

The management installation device of the present invention in this embodiment is an example used in a vibration excavation method, and the front part of the cylindrical excavator body 9 has an outer diameter that is similar to the outer diameter of the excavator body 9 and the buried pipe 6. A large vibrating excavator 7 is installed via a vibration isolating device 8, and a buried pipe 6 whose outer diameter is the same as that of the excavating machine body 9 is connected to the rear of the excavating machine body 9, and a buried pipe 6 is connected to the rear of the buried pipe B. Starting shaft 12
A hydraulic cylinder 4 as a tube propulsion means installed in the pipe is brought into full contact with the pipe. A vibration motor 16 is built into the vibrating excavator 7, and a viscosity imparting liquid inlet 1 is provided at the tip of the vibrating excavator 7.
One end of the motor cable 5 is connected to this vibration motor 16, and one end of the viscosity imparting liquid injection hose B is connected to the vibrating excavator 7 in close proximity to the viscosity imparting liquid injection port 11. The other ends of the cable 5 and the viscosity imparting liquid injection hose 6 are connected to a power supply and a viscosity imparting liquid supply device (not shown) installed in the full launch shaft 12 or on the ground.

Therefore, in this embodiment, a convex portion 10 is entirely provided on the outer circumferential side of the excavator body 9 and protrudes in the radial direction of the excavator body 9 to be equal to the outer diameter of the vibrating excavator 7.

The convex portions 10 are arranged at equal intervals in the vertical and horizontal directions of the excavator main body 9, that is, in the cross direction. Six pieces are protruded to have the same width, and extend in the axial direction of the excavator body 9 from the vibration isolator 8 to approximately the middle of the excavator body 9. Further, a recess 14 is entirely provided on the outer peripheral edge of the vibrating excavator 7.

The management equipment of the present invention in this embodiment has the above-mentioned configuration, and its operation will be explained below.

Instead, the vibration motor 13 is activated to vibrate the vibrating excavator 7, and the viscosity imparting liquid sent by the viscosity imparting liquid injection hose 6 is injected from the viscosity imparting liquid injection port 11 into the excavation surface. Then, due to the vibration of the vibrating excavator 7, the strength of the ground 1 around the vibrating excavator 7 decreases, and the viscosity imparting liquid is injected into the ground 1 whose strength has been reduced, and the viscosity imparting liquid and the earth and sand are mixed. are mixed and stirred to form a slurry, and this slurry 2 (
The viscosity-imparting liquid (mixed earth and sand) is applied to the concave portion 14 of the vibrating excavator 7 and the concave portion 15 between the convex portions 10 of the excavator body 9.
The excavator is discharged through the excavator main body 9 and the entire annular gap formed between the buried pipe 3 and the ground 1 to the starting shaft 12.

At this time, the diameter of the excavated hole 16 excavated by the vibrating excavator 7 is equal to the outer diameter of the vibratory excavator 7 and larger than the outer diameters of the excavator main body 9 and the buried pipe 6.

As a result, an annular gap is formed between the excavator main body 9, the buried pipe 6, and the ground 1, and the slurry 2 is filled in this annular gap.
is filled. Therefore, in the present invention, the convex portion 10 is formed approximately in the middle of the vibration isolating device 8 and the excavator main body 9 (fixed side portion that does not vibrate), and extends in the radial direction of the excavator main body 9 to the outer diameter of the vibrating excavator 7. Since the protrusion was installed to the same size,
This convex portion 10 abuts on the excavated hole 16, and the convex portion 10 improves the straightness with the excavated hole 16 as a guide. In other words, due to buoyancy, the main body 9 of the excavator is turned upward,
This prevents the excavator main body 9 from tilting downward due to its own weight, and furthermore, even if the soil quality of the ground is uneven, the excavator main body 9 does not bend toward the side with weaker resistance. .

・) Next, the hydraulic cylinder 4 is extended to propel the buried pipe 6, and when the hydraulic cylinder 4 reaches the stroke end, the hydraulic cylinder 4 is retracted to newly connect all the buried pipes 3.
Thereafter, the buried pipe 6 can be buried in the ground 1 by repeating the above-described operation.

FIG. 4 is a sectional view showing another embodiment of the management equipment of the present invention.

This embodiment has a convex portion io" on the top of the excavator main body 9.
1. In addition, wide protrusions 10'' are provided at the lower part of the protrusion 10', respectively.In this way, the protrusions io,
The shape, size, and number of io' and io'' are not particularly limited.However, they must be able to be fixed so that the excavator main body 9 does not shift in the radial direction of the excavator main body 9, and that there is a gap between the convex parts. Any material that can discharge the slurry from the recess to the rear may be used.

In the above-described embodiment, the size of the convex portion 10 was set to be equal to the total outer diameter of the vibrating excavator 7, but it may be larger than the outer diameter of the vibrating excavator 7. In this case, the excavation hole 1 of the convex part
Since the contact with 6 becomes stronger, it is necessary to increase the propulsive force to some extent, but this has the effect of further improving straight-line performance.

Further, in the above-described embodiments, a vibrating excavation type management and installation device has been described, but a rotary excavation type management and installation device can also provide similar effects. In the case of this rotary excavation method, all rotary excavators whose outer diameter is larger than the outer diameter of the excavator body and the buried pipe are installed on the front part of the excavator body, and a protrusion is placed on the excavator body in the radial direction of the excavator body. The outer diameter of the rotary excavator is equal to or slightly larger than the outer diameter of the rotary excavator.

As is clear from the above embodiments, the management installation device of the present invention has a convex shape on the excavator main body in which an excavator is provided with an excavator whose outer diameter is larger than the outer diameter of the excavator main body and the buried pipe. The protruding part is the same as or slightly larger than the outer diameter of the excavating tool and protrudes in the radial direction of the excavator body, so that the protruding part comes into contact with the excavation hole, and the protrusion serves as a guide for the entire excavation hole. ,
Straight running performance is improved. In addition, since the excavated soil is discharged backwards through the concave portion between the convex portions, there is no problem in discharging the excavated soil. Furthermore, since the convex portion contacts the excavation hole, it is possible to achieve the effect of preventing the surface of the ground from falling off.

[Brief explanation of the drawing]

1 to 6 show embodiments of the management equipment of the present invention, FIG. 1 is a schematic diagram of the entire management equipment of the invention, and FIG.
The figure is a vertical cross-sectional view of the main body of the excavator, and Figure 6 is I in Figure 2.
-1 [This is a line sectional view. FIG. 4 is a sectional view showing another embodiment of the management equipment of the present invention. 1... Earth, 2... Slurry (soil mixed with viscosity imparting liquid)
, Ro... Buried pipe, 4... Hydraulic cylinder, 7... Vibrating excavator, 9... Excavation machine body, 10,1σ, 10"・
...Convex part, 12...Starting shaft, 15...Concave part, 16
...Drilling hole. Patent Applicant Nippon Telegraph and Telephone Public Corporation Patent Applicant Hitachi Construction Machinery Co., Ltd. Agent Patent Attorney Tadashi Akimoto No. 1 Figure 2 Figure 3 Figure 4 Continued from page 1 0 Inventor Naoki Miyanagi Kandate-cho, Tsuchiura City 650 Hitachi Construction Machinery Co., Ltd., Tsuchiura Factory 0 Author: Nobuyuki Tobita 650 Kandate-cho, Tsuchiura-shi Hitachi Construction Machinery Co., Ltd. Tsuchiura Factory 0 Author: Nakano Manabu 650 Kandate-cho, Tsuchiura City, Hitachi Construction Machinery Co., Ltd. Tsuchiura Factory ■Applicant Hitachi Construction Machinery Co., Ltd. 2-6-2 Otemachi, Chiyoda-ku, Tokyo

Claims (1)

[Claims] The front part of the excavator body is equipped with an excavator whose outer diameter is larger than the outer diameter of the excavator body and the buried pipe, and the front part of the buried pipe is connected to the rear part of the excavator body, and the All of the pipe propulsion means installed in the starting shaft are brought into contact with each other, and the excavation tool excavates the entire ground, and the pipe propulsion means are all activated to move the excavated earth and sand between the excavation machine body, the buried pipe, and the excavation hole. In a management installation device for discharging into a starting shaft through an annular gap formed in between and burying a buried pipe in the ground, the entire convex portion on the outer peripheral surface of the excavator body is equal to the outer diameter of the excavator. Alternatively, a slightly larger protrusion is provided in the radial direction of the excavator body, and the convex part serves as a guide for the excavation hole, and the concave area between the convex parts serves as a discharge passage for all excavated soil to the rear. Characteristic management equipment.