JPS6272892A - Apparatus for propelling hume pipe - 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 <Industrial Application Field> The present invention relates to a propulsion device such as a humid pipe or a steel pipe.

<Prior Art> There is a propulsion method in which a pipe body such as a hump pipe is pushed into the ground by a jack placed in an excavated shaft to form a pipe underground.

In the conventional propulsion device used in these propulsion methods, as shown in Fig. 6, a group of jacks is located behind a press ring 5 located at the tail end of the hume pipe 2, and this group of jacks is expanded and contracted. This is a device for pushing the hump pipe 2 into the ground via a pushing ring 5.

Therefore, in order to use the propulsion device, it is necessary to excavate a shaft with a length that satisfies the following conditions.

In other words, L: Length of the shaft to be excavated Ll: Maximum contracted length of the jack L2: Length of the humm pipe L3: Length of the bearing wall L4: Length of the collar installation L5: Thickness of the push ring. L≧L1+L2+L3+L4+L5 Problems to be Solved by the Present Invention Conventionally, the length of the shaft to be excavated to use the propulsion device has been determined based on the above conditions, so the following problems exist. .

Kui> Even if the length of the shaft to be excavated is made as small as possible, there is a limit to the minimum value because the above conditions must be met at least.

For this reason, it is extremely difficult to secure land for shafts, especially in urban areas, and propulsion devices may not be able to be used.

<Exposure> In order to make the length of the shaft to be excavated as small as possible, when the maximum retracted length Ll of the jack is made small under the conditions, the stroke length S becomes short.

Therefore, the jack for propelling the humid pipe must be expanded and contracted many times, which takes time to construct.

(kuha) If the length of the hume pipe L2 is made smaller under the conditions in order to minimize the length of the shaft to be excavated, a large number of hume pipes will have to be used, which will result in laborious construction. .

Purpose of the present invention The present invention was made to solve the above-mentioned problems.In addition to being able to obtain a sufficient stroke length and being easy to construct, the length of the shaft to be excavated is small, making it suitable for use in urban areas, etc. The purpose is to provide a propulsion device such as a Huum tube that can be used even in Japan.

<Example> An example of the present invention will be described below with reference to the drawings.

The present invention is a propulsion device characterized in that, as shown in FIG. 1, a group of jacks is arranged on the side of a hume tube 2 in parallel to the propulsion direction.

In order to transmit the propulsive force of this first group of jacks to the tail end of the hump tube 2, a U-shaped metal fitting 1 as shown in FIG.
Place 0.

[U-shaped metal fitting] The U-shaped metal fitting 10 is for transmitting the propulsive force generated by the expansion and contraction of the jack 1 to the tail end of the hump tube 2.

That is, the shape of the U-shaped metal fitting 10 is formed by one bottom plate 11.
Brackets 12 are positioned parallel to the bottom plate 11 and protrude on both sides of the base plate.

The bottom plate 11 and the bracket 12 are connected by a connecting plate 13 orthogonal to each other, forming a U-shape.

The tip of the jack 1 is attached to a bracket 12 formed by bending the tip of a U-shaped metal fitting 10 outward into an L-shape.

On the other hand, the bottom plate 11 of the U-shaped metal fitting 10 is attached to the press ring 5.

In this way, the propulsion force of the jack 1 is transmitted to the humid pipe 2 via the push ring 5.

Further, although not shown, if the bottom plate portion of the U-shaped metal fitting 10 is formed in the shape of the push ring 5, the propulsive force is directly transmitted to the hump tube 2 via the U-shaped metal fitting 10, so that the push ring 5 becomes unnecessary.

In addition, the connecting plate 13 of the U-shaped metal fitting 10 may have a divided structure as shown in FIG. 3.

That is, the divided connecting plate 13, bottom plate 11, and bracket 12 are formed with uneven ends, for example, as shown in FIG.
It is constructed so that it can be fixed with an insertion rod 14.

In this manner, the U-shaped metal fitting 10 in which the connecting plate 13 has a split structure allows the distance between the bottom plate 11 and the bracket 12 to be easily adjusted by removing a part of the connecting plate 13.

Next, one embodiment of the operation of the propulsion device of the present invention will be described.

In this embodiment, a case will be described in which a Huum's tube is used, but it goes without saying that other tubes can be used.

1> Excavation of a shaft In order to use the propulsion device of the present invention, a shaft is excavated,
Set up the propulsion device.

Unlike conventional methods, the length of the shaft to be excavated is sufficient even if it is small, and the amount of excavated soil is small, so the cost of building the shaft can be reduced.

2> Setting the hume tube The hume tube 2 is placed on the propulsion stand 6 located between the first group of jacks, the collar 4 is attached to one end of the hume tube 2, and the hume tube 2 is set in the propulsion device.

3> The proximal end of the humid tube extends the first group of jacks supported by the bearing pressure wall 3, and pushes the bracket 12 of the U-shaped metal fitting 10 forward.

The U-shaped metal fitting IO that has moved forward pushes out the hump pipe 2 into the ground via the push ring 5 that is attached to the J-shaped plate 11.

The stroke length S at this time is the distance by which the cylinder 1 is extended, and the hump tube 2 is pushed out by the distance of the stroke length S.

In addition, when the connecting plate 13 of the U-shaped metal fitting 10 is made into a divided structure, it can also be implemented as follows.

First, the U-shaped metal fitting 10 pushed forward is pulled back.

Then, a part of the connecting plate 13 is removed to shorten the distance between the bottom plate 11 and the bracket 12.

Then, push the bracket 12 of the U-shaped metal fitting 10 forward again.

As a result, Huyum tube 2 is further pushed underground by the shortened distance.

Effects> Since the present invention is as described above, the following effects can be expected.

(a) A jack was placed on the side of the humid canal.

Therefore, the length of the shaft to be excavated in order to use the propulsion device n of the present invention is sufficient even if it is small.

As a result, propulsion devices can now be used in urban areas that suffer from a lack of land.

(b) In order to determine the length of the shaft to be excavated, it is no longer necessary to satisfy the conventional conditions.

In other words, since the jack group in the present invention is located on the side surface of the Hume's canal, it is no longer necessary to take into consideration the maximum contracted length of the jack under the conventional conditions as shown in FIG.

Therefore, even though the length of the shaft was reduced, it became possible to increase the stroke length.

As a result, the number of times the jack expands and contracts can be reduced, so construction time can be shortened.

(c) It is not necessary to satisfy conventional conditions in order to determine the length of the shaft.

Therefore, since a long fume pipe can be used, construction becomes easier.

[Brief explanation of drawings]

Fig. 1 0 An explanatory diagram of an embodiment of a propulsion device such as a hump tube of the present invention

Claims (1)

[Claims] In a propulsion device that pushes a Hume pipe, etc. into the ground using a jack, the jack is arranged on the side of the Hume pipe, etc. parallel to the propulsion direction, and the propulsive force of this jack is transmitted to the tail end of the Hume pipe, etc. A propulsion device such as a Hume tube, characterized in that it is configured to