JP3437134B2 - Propulsion method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion method adopted when disposing a sewer pipe or the like.

[0002]

2. Description of the Related Art A vertical shaft is bored, an excavation body provided with an excavation portion at the tip from a peripheral wall of the vertical shaft is pushed by an appropriate means, and a pipe material is successively arranged behind the excavation body. As a propulsion method for ejecting an excavation object through the pipe material while additionally pushing, the Japanese Patent No. 2601401 of the applicant's earlier application has been invented (hereinafter referred to as a conventional example).

In this conventional example, an excavation body is used as an excavation body in which a plurality of lubrication material outlets for delivering the lubrication material to the outer peripheral surface are annularly arranged. By deriving the amount of the lubricant, the entire circumference of the excavated body is uniformly filled with the lubricant satisfactorily (the filled lubricant is the friction between the ground and the excavated body and the pipe material). It has the effect of reducing resistance and facilitating the pushing of excavated bodies and pipes.

By the way, in this conventional example, for example, the lubricant drawn out from the lubricant outlet provided on the upper surface of the excavated body flows down to the left and right along the outer peripheral surface of the excavated body due to natural flow. . Therefore, this conventional technique is insufficient in terms of filling a desired position with a desired amount of the lubricant, and in the end, the effect of uniformly filling the entire outer circumference of the excavated body with the lubricant is satisfactory. Will be insufficient.

The present invention solves the above problems,
It is an object of the present invention to provide an excellent propulsion method capable of preventing natural flow of a lubricant and reliably filling a desired position on the outer periphery of an excavated body with a desired amount of the lubricant.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

A shaft 1 is bored, an excavation body 3 provided with an excavation portion 2 at the tip from the peripheral wall of the shaft 1 is pushed by an appropriate means, and a pipe material 4 is additionally pushed behind the excavation body 3 in sequence. The present invention relates to a propulsion method for discharging an object to be excavated through the pipe material 4 while squeezing, wherein the excavation body 3 having the following configuration is used as the excavation body 3. Excavation 2 at the tip of Kimoto cylindrical body 5 is continuously provided, a plurality of outlet 8 on the outer peripheral surface allowed to derive the skids 6 of the base cylinder member 5 is provided annularly, and in the vicinity of the electrically outlet 8 The base cylinder 5 is provided with a cover 9, and the space formed between the cover 9 and the base cylinder 5 includes the space including at least one outlet 8 in the circumferential direction. Partition body 10 is installed side by side ,
The amount of the lubricant 6 led out from the outlet 8 is arbitrary for each outlet 8.
Amount is configured to be out guide, wherein the specification in the space partitioned by Setsutai 10 the skids 6 excavating member outlet 11 is provided for discharging 3.

Further, in the propulsion method according to claim 1,
The present invention relates to a propulsion method, wherein an outlet 11 is provided behind a space section partitioned by a partition body 10.

[0009]

[Operation and effect of the invention] lubricant was issued or outlet 8 Rashirube 6
Even if an attempt is made to naturally flow, the flow is blocked by the partition bodies 10 on the left and right of the outlet 8, and the lubricant 6 can be filled at a desired position. Therefore, the distribution of the lubricant 6 can be unevenly distributed. Can be suppressed.

[0010] Since the present invention is configured as described above, skids
Natural flow is prevented, the desired desired quantity of lubricating material Xiu propulsion method that can be filled with the position of the outer periphery of the drilling body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings illustrate one embodiment of the present invention and will be described below.

In this embodiment, a vertical shaft 1 is bored and the vertical shaft 1
The excavated body 3 provided with the excavated portion 2 at the tip from the peripheral wall is pushed by an appropriate means, and the pipe material 4 is sequentially provided behind the excavated body 3.
It is related to a propulsion method in which the object to be excavated is discharged through the pipe material 4 while additionally pushing.

As the excavated body 3, the excavated portion 2 is continuously provided at the tip of the base cylindrical body 5, and a plurality of outlets 8 through which the lubricant 6 (bentonite or the like) is led out are provided on the outer peripheral surface of the base tubular body 5. A cover 9 is provided in a ring shape, and a cover 9 is provided in the vicinity of the outlet 8 on the base cylinder 5. The space formed in the space between the cover 9 and the base cylinder 5 has the space. At least one outlet 8
The excavation body 3 in which the partition bodies 10 for partitioning in the circumferential direction are arranged in parallel with each other and the space portion partitioned by the partition bodies 10 is provided with the discharge port 11 for discharging the lubricant 6 is adopted. There is.

The excavation portion 2 and the base cylinder 5 may be separate structures. Further, a configuration may be adopted in which the outer cylinder is fitted to the outer peripheral surface of the base cylinder body 5 as the cover body 9.

Further, the discharge port 11 is provided behind the space section partitioned by the partition body 10. Specifically, the space formed between the cover body 9 and the base cylinder body 5 is configured such that the front and side portions are closed and the rear side is opened, and this rear opening is the discharge port 11. Is set to. The rear side means the rear side with respect to the excavation direction of the excavated body 3.

Further, the amount of the lubricant 6 led out from the outlet 8 is constructed so that an arbitrary amount is led out for each outlet 8.

On the outer peripheral surface of the base cylinder 5 and behind the discharge port 11, a projecting shaft 12 capable of projecting outward from the cover 9.
Is provided. The protruding shaft 12 bites into the natural ground to grind the excavated surface of the natural ground into a slit shape,
The material 6 is mixed with the sand and sand of the natural ground.

Further, the projecting shaft 12 is constructed so as to be capable of projecting and retracting. The projecting and retracting amount is set to an appropriate amount depending on the nature of the ground and the nature of the lubricant 6. Specifically, this protruding shaft 12
The protrusion amount of is usually set to 2-3 cm. Symbols in the figure
Reference numeral 13 is a projecting and retracting mechanism for projecting and retracting the projecting shaft 12.

Further, the excavated body 3 and the pipe material 4 successively provided behind the excavated body 3 are propelled by pressing a propulsion jack 15 arranged in the vertical shaft 1.

Specifically, the propulsion jack 15 pushes the rear end portion of the excavation body 3 or the pipe material 4 to propel the excavation body 3 or the pipe material 4, and then the contraction of the propulsion jack 15 causes the propulsion jack 15 to contract. A gap is provided between the propulsion jack 15 and the pipe member 4, a new pipe member 4 is arranged in this gap, and the rear end portion of the new pipe member 4 is pushed and expanded by the propulsion jack 15 to thereby excavate the excavated body 3 and The method of propelling the pipe material 4 again is adopted.

Reference numeral 14 in the drawing denotes a reinforcing rib provided on the inner surface of the base cylinder 5.

Since the present embodiment is as described above, the lubricant 6 drawn out from the outlet 8 is prevented from flowing down by the partition bodies 10 on the left and right sides of the outlet 8 even if the lubricant 6 naturally tries to flow down. Further, it is possible to prevent the distribution of the lubricant 6 from being biased by natural flow as much as possible, and thus it is possible to fill a desired amount of the lubricant 6 at a desired position. Becomes

The lubricant 6 led out from the outlet 8 is
It is temporarily held in the space formed by the outer peripheral surface of the base tubular body 5, the cover body 9 and the partition body 10 and spreads to a shape along the outer peripheral surface of the base tubular body 5 around the outlet 8 to some extent. After that, it will be discharged from the discharge port 11, and the lubricant 6
Does not flow naturally from a state where it spread to some extent,
The distribution of the lubricant 6 does not become uneven, and this also makes it possible to reliably fill a desired amount of the lubricant 6 in a desired position, which is a highly practical propulsion method.

The lubricant 6 led out from the outlet 8 is
After being temporarily held in the space formed by the outer peripheral surface of the base cylindrical body 5, the cover 9 and the partition 10, the discharge is performed from the discharge port 11 provided behind the space partitioned by the partition 10. However, since the discharge direction is a direction parallel to the propulsion direction of the excavation body 3 and the opposite direction, the discharge port
The lubricant 6 discharged from 11 does not have a discharge resistance, and this also makes it possible to surely fill a desired amount of the lubricant 6 in a desired position, which is a propulsion method having excellent practicability.

Further, the amount of the lubricant 6 led out from the outlet 8 is configured so that an arbitrary amount is led out for each outlet 8, so that, for example, the surroundings of the excavated body 3 and the pipe 4 are Lubricant 6 led out from the upper outlet 8 depending on the nature of the excavated surface
The amount of the sliding material 6 that is drawn out from the right-side outlet 8 is adjusted by increasing the amount of the sliding material 6 that is drawn out, etc. It is a propulsion method with excellent practicability that can be filled into.

Further, since the outlet 8 is covered with the cover 9, the earth pressure of the ground does not act on the lubricant 6 led out from the outlet 8, and the excavation surface is inevitably attached to the excavated surface. The discharged pressure of the discharged lubricant 6 is not lost, and this also makes it possible to reliably fill a desired amount of the lubricant 6 in a desired position, which is a highly practical propulsion method.

A projecting shaft 12 is provided on the outer peripheral surface of the base cylinder 5 behind the discharge port 11, and the projecting shaft 12 cuts into the ground to cut the excavated surface into a slit shape. The sliding member 6 is held by this slit to prevent the free flowing, and the desired amount of the sliding member 6 can be more reliably filled in the desired position. Becomes

Although the present embodiment has described the case where the lubricant 6 is led out from the outlet 8, the configuration of this embodiment leads the solidified material 7 from the outlet 8 and solidifies the solidified material 7. (Or, a mixture of the solidifying material 7 and the earth and sand is solidified) to form a lining body 7 around the base cylinder body 5, and the sliding material 6 is provided between the lining body 7 and the base cylinder body 5. It can also be applied to a propulsion method for filling (referred to as a lining propulsion method) (see FIG. 5).

It should be noted that the lining body 7 is used to prevent the lubricant 6 for improving the sliding of the pipe material 4 with respect to the ground from infiltrating into the ground and prevent the collapse of the excavated surface. It is formed to do.

That is, according to this another example, a desired amount of the solidifying material 7 can be filled at a desired position.
The solidified material 7 to be filled in the portion where the solidified material 7 easily penetrates into the ground
By increasing the amount of the solidified material 7, it is possible to form the lining body 7 having sufficient strength without waste of the solidifying material 7.

Further, the part from which the solidifying material 7 is led out and the lubricant 6
The present embodiment may be applied to both the part for deriving.

The rest is the same as in this embodiment.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a propulsion method of this embodiment.

FIG. 2 is an explanatory side sectional view of the present embodiment.

FIG. 3 is an explanatory vertical sectional view of a main part of the present embodiment.

FIG. 4 is an explanatory perspective view of a main part of this embodiment.

FIG. 5 is an explanatory vertical sectional view of the present embodiment.

FIG. 6 is an explanatory vertical sectional view of another example of the present embodiment.

[Explanation of symbols]

1 shaft 2 excavation section 3 excavated body 4 tubing 5 base cylinder 6 lubricants 8 Outlet 9 Cover 10 partitions 11 Outlet

Claims (2)

(57) [Claims] 1. A vertical shaft is bored, an excavation body provided with an excavation portion at a tip from a peripheral wall of the vertical shaft is pushed by an appropriate means, and the pipe material is sequentially pushed behind the excavation body while further pushing the pipe material. A propulsion method for discharging an object to be excavated through, wherein the excavation body having the following structure is adopted as the excavation body. Digging unit is provided continuously to the tip of Kimoto cylinder, this is the outer peripheral surface of the base cylinder a plurality of outlet ports that allowed to derive the skids are provided annularly, based cylinder in the vicinity of the electrically outlet covering is provided, a partition member for partitioning the space portion in the space formed between the cover member and the cylindrical base body in the circumferential direction in a state that includes at least one outlet is arranged, the outlet port Lubricants derived from
Is configured so that an arbitrary amount is derived for each outlet.
It is, excavated material discharge port for discharging the lubricating material in the space partitioned by the specifications Setsutai is provided. 2. The propulsion method according to claim 1, wherein the discharge port is provided behind the space section partitioned by the partition body.