JP2821870B2 - How to move the box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for advancing a box which is disposed with its propulsion directions facing each other.

[0002]

2. Description of the Related Art A method of excavating underground structures of a large number of members underground such as railways and roads in a transverse direction is to install a propulsion jack on the starting side, for example. Pushing to the arrival side, attaching a towing jack to the rear of the box, towing the box from the starting side to the arrival side with a towing member such as PC steel wire with the reaction force body installed on the arrival side as an anchor, In the latter method of towing, there is a method of alternately advancing the box while attracting each other from both sides of the excavation site.

[0003]

In any of the methods, when a plurality of boxes are sequentially advanced, only one box is advanced in one step, so that the construction period is long, and the upper part of the crossing point is required. The influence period on roads and railroads on the ground is prolonged, which is not preferable in terms of safety.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art and to reduce the construction period when a large number of underground structures such as railroads and roads are dug deeply in the underground. The aim is to provide a way forward.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly sets one side on one side with the propulsion directions opposed to each other.
The plurality of boxes are arranged side by side in parallel on the other side, and a tow jack is attached to the rear of the last one of the plurality of boxes on the other side, and the tow jack is attached to the tow jack. The end of the connected towing member is fixed to the rear part of the box on the other side via a fixing tool, and the box located in front of the box to which the towed jack is connected is connected via a propulsion jack,
By actuating the towing jack using the front box as a reaction force body and tensioning the towing member, the box at the opposing position is pulled forward and at the same time, the propulsion jack is operated and the The foremost box is advanced, and the rearmost box of the multiple parallel boxes is finally operated with the towing jack to draw the box at the opposite position as a reaction force with the towing member. It is assumed that.

Second, one box is arranged on one side with the propulsion directions facing each other, and a plurality of boxes are sequentially arranged on the other side. A tow jack is attached to the rear part of the last one of the plurality of boxes on the side parallel to the rear part, and the end of the towing member connected to the tow jack is fixed to the rear part of the box on the other side. The box located in front of the box that connects the towing jacks on the side that is connected in parallel is connected via the propulsion jack, and the towing jack is actuated to tension the towing member, so that the opposing position is fixed. At the same time as pulling the box
Activate the propulsion jack to advance the foremost box of the multiple parallel boxes, and the last of the multiple parallel boxes at the end by operating the towing jack The gist of the invention is that the box at the position is pulled by a towing member as a reaction body.

According to the first aspect of the present invention, by operating the towing jack, one box on the opposite side moves forward with the box in front of the box to which the towing jack is attached as a reaction force. The foremost box on the side opposite to this is advanced by the operation of the propulsion jack, with the rear box to which the towing jack is attached being used as a reaction force body, and two boxes are simultaneously advanced in one process. Thereafter, the box with the towing jack attached thereto moves forward by the operation of the towing jack using the opposing box as a reaction force.

According to the second aspect of the present invention, the foremost box to which the propulsion jack is attached moves forward with the rear box as a reaction force body, and the box on the side facing the front jack also has the same structure. By operating the towing jack attached to the body, the rearmost box on the opposite side moves forward as a reaction force body. Thereby, two boxes advance simultaneously in one process. Thereafter, the rearmost box is advanced by using the towing jack attached to the box as a reaction body with the already advanced box on the opposite side.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view showing a forward step of a first embodiment of a method for advancing a box according to the present invention, in which one box 1a is provided on one side with a propulsion direction facing each other, and a plurality of boxes (shown in FIG. In this example, two boxes 1b and 1c are sequentially arranged in parallel, and the towing jack 3c is attached only to the rear part of the last box 1c of the plurality of boxes 1b and 1c on the side to be paralleled. An end of the towing member 4 connected to the towing jack 3c is fixed to a rear portion of the other side of the box 1a via a fixing tool 5, and a box located in front of the box 1c to which the towing jack 3c is connected. 1b is connected to the box 1c via the propulsion jack 6b (FIG. 1 (a)).

To advance the boxes 1a to 1c, the box 1
c, the towing jack 3c attached thereto is actuated, and the box 1a on the opposite side is advanced by using the box 1b at the front thereof as a reaction force, and at the same time, the propulsion jack 6b is actuated to operate the rear box 1c.
Is used as a reaction body to advance the box 1b. This gives 1
In the process, the boxes 1a and 1b at the opposing positions are simultaneously advanced (FIG. 1B).

Finally, the towing jack 3c is operated again to make the box 1a at the opposing position a reaction force, pull the box 1c forward with the towing member 4, and move it forward (FIG. 1 (c)).

FIG. 2 shows a second embodiment. In addition to the structure of the first embodiment, a tow jack 3a is also attached to the rear portion of the box 1a on one side (FIG. 2 (a)). In order to advance the boxes 1a to 1c, the towing jack 3a attached to the box 1a is actuated and the rearmost box 1 on the opposite side is operated.
The box 1a is pulled forward by the towing member 4 using c as a reaction body, and at the same time, the propulsion jack 6b is operated to advance the box 1b using the rear box 1c as a reaction body. Thereby, the boxes 1a and 1b at the opposing positions are simultaneously advanced in one step (FIG. 2B).

Finally, the towing jack 3c is actuated, and the box 1c is pulled forward by the towing member 4 using the box 1a at the opposing position as a reaction force (FIG. 2 (c)).

[0014]

As described above, the method for advancing a box according to the present invention is applicable to a case where a large number of underground structures such as railways and roads are excavated in the transverse direction from the side opposite to the excavation direction. At the same time, the box can be advanced, so the construction period can be shortened. Also, since the box is used as a reaction body, there is no need to separately install reaction walls, etc., and the installation space is not required. Also, the workability is good.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of a method for advancing a box according to the present invention.

FIG. 2 is an explanatory view showing a second embodiment of a method for advancing a box according to the present invention.

[Explanation of symbols]

 1a, 1b, 1c: Box 3, 3a, 3b, 3c: Towing jack 4: Towing member 5: Fixing tool 6b: Propulsion jack

Claims (2)

(57) [Claims] 1. A single box is arranged on one side with a propulsion direction facing each other, and a plurality of boxes are sequentially arranged on the other side. A tow jack is attached to the rear part of the box body, the end of the towing member connected to the tow jack is fixed to the rear part of the other side box via a fixing tool, and the tow jack is connected to the box. The box located at the front is connected via a propulsion jack, and the front box is used as a reaction body to operate the towing jack to tension the towing member, thereby pulling the box at the opposite position forward and moving it forward. Activate the jack to advance the frontmost box of the multiple parallel boxes, and operate the towing jack at the end of the rearmost box of the multiple parallel boxes. Pulling the box as a reaction body with the towing member Characteristic method of box advance. 2. A single box on one side and a plurality of boxes on the other side are arranged in parallel so that the propulsion directions are opposed to each other. A tow jack is attached to the rear part of the last one of the plurality of side-by-side boxes, and the end of the towing member connected to the tow jack is attached to the rear part of the other side of the box via a fixing tool. The box that is located in front of the box that connects the towing jacks on the side that is paralleled is connected via the propulsion jack,
By actuating the towing jack and tensioning the towing member, the box at the opposing position is pulled forward and at the same time, the propulsion jack is actuated to advance the frontmost box of the multiple parallel boxes, A method of advancing a box, characterized in that a rearmost one of a plurality of parallelly arranged boxes is finally operated by a towing jack to draw a box at an opposing position as a reaction force with a towing member.