JPS6078097A - Control of propelling direcction - 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 uses a propulsion method to construct a tunnel in front of a pipe row formed by moving forward at any time, using a static correction method that does not rely on strong mechanical control or squares. The present invention relates to a method for controlling propulsion attitude that can be performed safely.

The gist of the present invention is that the blade (5) and the first pipe 4-1
A plurality of hydraulic jacks filled with a certain volume of oil are installed at each end between the connections. On the other hand, air or water is selectively injected onto the face ground using a plurality of jet nozzles provided on the outer peripheral surface of the cutting edge 5 and the front part of the inner slope plate to soften (or This is a propulsion attitude control force method characterized in that the tube row is sequentially advanced while modifying the propulsion attitude of the cutting edge 5 by locally changing the resistance around the cutting edge of the face (excavation).

Conventionally, as a method for correcting the posture in the propulsion direction of this type, as shown in FIG.
! There is a technology that uses

Normally, in the propulsion method, if the pipeline deviates from the specified course, there will be a problem in the following: - Jail I8-1. , +8-2- are respectively adjusted to return the cutting edge 5-1 to its normal course.

However, according to such conventional methods, for example, the first
As shown in the figure, when the cutting edge 5-1 is downward, it is in the direction of the cutting level. When attempting to correct the posture, first extend the stroke of the jack 18-2 that moves downward by 11" at the blade mouth 5-IK. At this time, the stroke C of the upper jack 18-1 is reduced. Then, the cutting edge 5-1 is deflected upward with respect to the first tube 16-IK.

In this way, the jack 18-1 in the blade D5-I
, 18-2-, the blade mouth 5-1
The purpose is to correct the posture of the
)-〇Blade mouth 5-I Since it is necessary to generate IIC rotation and make corrections, we ended up adding a useless even-moment 9-I.
The cutting edge 5-1 was tilted at an angle, causing damage corresponding to the point touch iXj%.

Furthermore, since the adjustment of the length of the jacking stroke differs depending on the soil quality of the ground, it requires a great deal of skill. Moreover, there are many problems with the accuracy of the entire pipe line and the maintenance of the pipe body.

Therefore, in the present invention, the maintenance of the pipe body and the accuracy of the pipe can be improved by eliminating the forced trajectory correction of the cutting edge using the conventional hydraulic jack and by applying the characteristics of the propulsion method of moving in the direction of low ground resistance. The purpose of this study is to provide a method of posture control that measures speed.

Next, an embodiment of the present invention is shown in FIGS. 2 and 3.

It is shown in FIG. 4, FIG. 5, FIG. 6, and FIG. 8, and will be described in detail.

In the present invention, a plurality of hydraulic jacks 8-1 and 8-2 having relatively short strokes are connected in a closed manner by a hydraulic hose 19, and are interposed between the connection between the cutting edge 5 and the No. 4 pipe 4-1. It is.

The hydraulic pressure 8-1.8-2 has a constant volume ilf.
For example, as shown in FIG. 7, the maximum stroke extension is 1. Stroke length t is approximately intermediate between s and the most contracted length LA. All 77 ((Jatsuki 8-1.8-2
The oil nl is adjusted so that - represents the state maintained. (All jacks 8-1゜8-2- have a stroke length of 1
o When indicating money, use the prescribed level L, with the rules set above. ) This I'1. The jacks 8-1, 8-2- are in contact with both end surfaces of the cutting edge 5 and the first tube 4-1, and are disposed at positions equally dividing the circumference. At this time, the jack is 8-1°8
-2 Regardless of the stroke length of 8-2, since each jack 8-1. Pressure resistance I). All are the same.

Next, the front periphery of the outer peripheral plate of the blade mouth 5 and the inner slope plate 14 are
A plurality of /et nozzles 10 are provided around the front j'914 of -1, and a double-edged blade is formed by the outer circumferential plate and the slope plate 14-1. The inner circumferential shell 7HH < 14-2 is divided into multiple equal parts, forming shell structure groups A, B, and C, and air is injected into the tube 4 from the vertical side. Pipe 1 connecting to jet pump or water jet pump (not shown)
3, and each of the above shells A through the switching control valve 20,
It is constructed by piping (not shown) to B and C. In addition, instead of using the shell structure groups A, B, C, etc., a single jet nozzle or a plurality of jet nozzles may be provided so as to be freely movable.

In this way, by operating the switching control valve 20, the face ground 15 is excavated by injection from the jet nozzles 10 of the selected shells A, B, and C.

The present invention consists of the following. Next, one embodiment will be explained. (In order to make the explanation easier to understand, the explanation will be limited to the level of the diversion pipe.) Without diversion, in the shaft L, with the cutting edge 5 at the front, face backward and jack 8-1.8-2-8-8 , and the first pipe 4-1. In addition, between the 100th 4-1 stanza 2nd pipe 4, the hydraulic pressure is 8-9.8-108-16
It is also possible to insert a jatsugi group 7 that is closed. Shaft I
Start of the blade Iko 5 in K [I] is at the specified level L1
Since it is in this state, it is Jatsugi 8-1.8.
-2 stroke lengths are all the same; 1. So, it's a good job.

Now, in the vertical shaft L, if a hydraulic jack 2 is created to apply a thrust P to the cutting edge 5 facing the planned pipeline L1 by creating a hydraulic jack 2, then the thrust to the cutting edge 5 will be I゛10. The center of the resultant force is 11 degrees q from the center P of the diameter of the cutting edge 5.

Therefore, no couple acts on the blade mouth 5, and it is level and has one axis.
Add two to convex IJ.

In this way, as the pipes are successively extended into the ground, as shown in Figure 3, the specified level L1 is reached.
On the other hand, the level of blade 1]5 becomes L due to some external force.
3 and the level of the first tube 4-1 is also deflected to L2, then the following attitude control force method is applied.

First, set the level L3 of the blade mouth 5 to the specified level ■7. Work will be carried out to restore the situation. In other words, the sword 115 is Ichinohane ground 15
When penetrating into the ground, the characteristic of the propulsion method is that near the canting edge of the blade 5, the blade 5 tends to deflect toward the ground side where penetration resistance is low. That is, the air or water jet pump installed outside the shaft 1 is operated, the switching control valve 20 is adjusted, and the level 7. Blade 1 in:
Injection to the lower face ground of IS1 < at 15 and softening -
4fc excavates 11. Therefore, when the cutting edge 5 penetrates,
Since the cutting edge resistance of the soft specific gravity or excavation II cut portion is reduced, the cutting edge 5 favors an upward posture 9. At this time, specifically, as shown in FIG. 5, for example, the shell A,
Select B, C, nonyl 13°D or shell C,
It is injected from the jet nozzles 10- D, E, and F. Since the jet is not sprayed onto the ground 12 above the cutting edge 5, the properties of the conventional ground are maintained.

In this way, an upwardly modified level L3-1 is formed. At this time, the jacks 8-1, 8-2 relatively extend and contract in proportion to the amount of change in the two directions. For example, -Upper Jihe Tsuki 8-1.8-2.8-8
is shrunk, downward jack 8-4.8-5.8-6I/i
Elongation and jack 8-3.8-7 indicate a neutral state.

As described above, in the past, as mentioned above, the eccentric load, that is, the thrust point 7 action (point touch) caused a couple, which caused a problem, but in the present invention, the jack 8-]
, 8-2-. The stroke length is adjusted to naturally adapt to the local change in the blade edge resistance. In other words, the resultant center PG of the thrusts applied to the blade mouth 5 from the rear is always located at the center of the diameter of the blade mouth 5, and even when the above-mentioned jacking stroke shows changes in length and shortness, the center PG of the resultant force on the blade mouth 5 is Thrust force is evenly transmitted to the end peripheral surface of the mouth 5. Therefore, the attitude can be easily controlled toward the ground side where the resistance is smaller without generating the -C1 couple.

On the other hand, when the cutting edge 5 passes through the point where the above-mentioned face ground has been softened or excavated II, the r15 and the entire cross section are on the conventional ground, so the cutting edge 5 is rotated and deflected without causing any rotation or deflection.
1 advance through the prescribed level I-.

Therefore, in the past, the entire pipe line had a raft, which caused damage to the pipe ends and gaps at the joints, but according to the present invention, the accuracy of the entire subsequent pipe line has been significantly improved, and the conventional defects have been eliminated. I came to the solution.

Furthermore, the above-mentioned jack 8-1.8-2 can be operated statically without requiring any workers or power, so it is labor-saving and can be carried out safely and accurately. I can do it. 7JO, the skill level of the workers is not required, the production is simple and inexpensive, and it has a great effect on the propulsion method.

The method of the present invention is not limited to one embodiment of the above-mentioned large and medium diameter propulsion construction method, but can also be used for small diameter propulsion construction methods using mechanical excavation, and can be applied to other designs and construction methods without departing from the spirit of the patent law. It is possible to make changes.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing the vicinity of the beginning of the conventional propulsion method, FIG. 2 is a general vertical cross-sectional view according to the present invention, FIGS. 3 and 4 are vertical cross-sectional views, and FIG. 3. FIG. 6 is a sectional view taken along arrows II-11 in FIG. 3, and FIG. 7 is a developed explanatory view of the jack 8-1.8-2. In addition, in the figure, 3 is the bearing wall, 5.5-] is the cutting edge, 6 and L are the junk group, 8-1.8-2 is the jack, and 9? :j
: J The blade part with two orientations, 10 is the jet nozzle, 11 is the weakened or excavated ground, 12 is the conventional ground, 13 is the piping, 14-1 is the slope plate, +4-2 is the To the body 111,] 4-3 is a separation plate, 19 is a hydraulic hose, 20
represents a switching control valve, and A, B, and C represent shell structure groups. Figure 5 Figure 2 Figure 7

Claims (1)

[Scope of Claims] A plurality of hydraulic jacks filled with a certain amount of oil are provided at each end side between the connection between the blade (5) and the first pipe 4-1. Air or water is selectively injected onto the face ground using a plurality of jet nozzles 10 provided on the outer peripheral surface of the mouth 5 and the front part of the inner slope plate to partially soften the face ground (eg ). As described above, the propulsion posture control method is characterized in that the tube array is sequentially advanced while correcting the propulsion posture of the cutting edge by locally changing the resistance around the blade 1 of the face.