JPS5817997A - Underground propelling drilling apparatus for executing pipe channel - 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 an underground propulsion drilling device for laying pipes. When laying a pipe underground, it is necessary to use a construction method that involves excavating to a specified depth from the ground and burying the pipe, or without excavating from the ground, installing an appropriate pit, or installing a pit due to the topography. In areas where there are no pipes, the construction method is to excavate or perforate holes in a predetermined direction from one side and sequentially lay the pipes.

When excavating large-diameter tunnels such as vehicle tunnels and waterway tunnels, the excavation equipment can be carried to the excavation location, and pipes can be efficiently laid in a predetermined direction. On the other hand, when installing small-diameter pipes, it is necessary to excavate the soil or operate the perforation bag and place from a distance, so it is difficult to form holes in a specific direction and lay the pipes. This is a difficult point.

When installing small-diameter pipes such as electric cables, water pipes, and gas pipes in the soil, the present invention allows the drilling machine to be pushed into the soil and propelled without taking any means of excavating or discharging earth and sand. While letting
This invention relates to an underground propulsion drilling device for laying pipelines, which is used in the construction method of sequentially laying pipelines.

Figure 1 shows an outline of the construction method using such an underground propulsion drilling device. Pit) P is dug in the soil, and a pushing device 8 is installed in the pit P together with a reaction force plate 4 for the pushing device. Reference numeral 1 denotes a main body of the propulsion drilling machine, and 6.11 d is a movable outer cylinder of the main body 1 of the propulsion drilling machine, and only the movable outer cylinder 11 having a ten-metal head can be press-fitted and propelled in the direction of the arrow by hydraulic pressure.

The partial pipe 2 in the ground shows a partial pipe pushed into a hole that has already been drilled. Hydraulic hoses 7 and 7' are connected from a hydraulic power source 5 to the propulsion drilling machine main body 1 and the pushing device 3 via the operation panel 6, respectively. - Now, in the state shown in the figure, if the propulsion drilling machine main body 1 is energized by applying hydraulic pressure from the operation panel 6, only the outer cylinder 11 will be affected by the frictional resistance with the sand in the partial pipe 2 and the reaction force for the pushing device. Focusing on board 4,
It can be pushed through the soil in the direction of the arrow. After the movable outer cylinder 11 is pushed in with a certain stroke, the hydraulic pressure is reduced and the pushing device 8 is energized by the operation panel 6. Since the propulsion drilling machine main body lid located at the tips of these partial conduits 2 is pushed forward and deenergized, it moves forward in the direction of the head IO which has already been pushed forward and is propelled, and the movable outer cylinder 11 as a whole moves forward. It is possible to move forward through the soil by the stroke propelled by pushing. When moving forward in this manner, the pipe can be laid by sequentially adding parts from the position of the partial pipe 2t to the pushing device 8. Also, as a similar construction method,
The propulsion drilling machine main body 1 itself does not have a movable mechanism for partially propelling it as described above, and the partial pipe line 2 is placed behind the propulsion drilling machine main body I from the position of P, and the pushing device 8 There is also a construction method in which the pipe is lengthened by drilling one after another, but with this method, as the pipe gets longer, the drilling work point becomes remote, so a "propulsion drilling machine" is used from a remote location. This will give a pushing force to the main body,
Since the pushing force will result in loss of sound, the method described above is preferable.

By the way, the present invention is directed to a device that is intended for a construction method in which a movable outer cylinder equipped with a drilling tool in the above-mentioned propulsion drilling machine main body 1 is drilled in the soil by external pushing. It is normal for some parts to be hard and some to be soft. For example, when trying to lay a pipeline in a straight line, the head of the propulsion drilling machine is simply It is not possible to maintain the straightness of the pipe simply by pushing it into the ground in front of it.

From this point of view, as shown in Japanese Patent Publication No. 50-8128, the tip of the movable outer cylinder of the propulsion drilling machine main body L is made into a spiral blade, and when the head 10 is pushed forward, it rotates on its axis and moves in a straight direction. A device has also been proposed that takes into account the entire indentation, but it is not possible to maintain the straightness sufficiently with this method alone.

Although it does not have a movable outer cylinder, it is
As shown in Publication No. 7409, the pushing direction of the head of the propulsion drilling machine body 1 is determined at the operation position on the ground;
A configuration that can appropriately correct this has also been proposed. However, in this device, the position of the propulsion perforator main body 1, which serves as a reference for correction, is displayed for each push-in thrust by optical means, and the operator always has to check the position of the propulsion perforator main body 1 at the tip of the pipe that has been press-fitted one after another. It is necessary to proceed with the work while monitoring the position indicator on the back of the machine.

In this case, the pipeline becomes long or it is difficult to monitor the underground position of the propulsion drilling machine main body 1 through the entire narrow pipe, and the tip of the head Even if you monitor it from a distance, it is difficult to determine which direction it is facing in the soil.

Therefore, in the present invention, the propulsion drilling machine main body l is equipped with its own pitch angle, rolling angle, and horizontal angle detectors so that these can be monitored from the position of the operation panel on the ground surface. The purpose of the present invention is to provide an underground propulsion drilling device for laying pipes, which is of a mechanism metal-biased reciprocating propulsion type, which can appropriately change the pushing direction of the head of the movable outer cylinder 11 of the propulsion drilling machine main body 1 based on information.

The embodiments shown in the drawings will be described below.

FIG. 2 is a schematic diagram of an embodiment of the invention.

The overall difference from the one shown in FIG. The head 10U is configured so that it can be connected at a certain angle from the direction perpendicular to the axis of the main body, as will be described later.

FIG. 3 shows an example of the main body of the propulsion drilling machine used in the present invention in its longitudinal section, and FIGS. 4 and 5 show the head IO
The relationship between the direction control fitting 22 and the direction control fitting 22 supported by the inner cylinder 20 is shown.

In FIG. 8, the head 10 is made of a hard metal body, for example, a molded body made of cemented carbide powder alloy. - In this example, it is shaped like a partially inserted plate that is pushed into the soil, but other shapes may be used, and an appropriate shape is selected depending on the soil quality.

The spherical part formed on the head 10 and the spherical recess formed at the tip of the movable outer cylinder 11 are engaged, and the protrusion 1275'' is fitted into the recess provided at the diameter of the spherical part of the head 100. In other words, the disk surface of the head lO can be completely changed in direction within a certain range with respect to the axis of the movable outer cylinder 11, but it is engaged so that it hardly rotates around the axis. ing.

The inner cylinder 20 is slidably fitted inside the movable outer cylinder ll, the rear outer cylinder 18 is slidably fitted behind it, and the end of the rear outer cylinder 1B is the end of the movable outer cylinder 11. Extends backwards beyond the upper part.

The movable outer cylinder 11 and the inner cylinder 20 can be moved in the axial direction by the protrusion 21, but are prevented from rotating relative to each other. Furthermore, the movable outer cylinder 11 and the rear outer cylinder 13 are movable in the axial direction by the projections 14 and corresponding grooves, but are prevented from rotating relative to each other. Also, the lb of movable outer cylinder 11 and rear outer cylinder 18
'i&! It is sealed by a seal 15.

A hydraulic cylinder 16 is fixed within the rear outer cylinder 18, and a piston rod of the hydraulic cylinder 16 is fixed to one bottom of the inner cylinder 20. The hydraulic cylinder 16 is connected to a hydraulic pipe I7, and the other end of the hydraulic pipe 17 is connected to equipment on the ground by a hydraulic hose 7'. 8 is a hydraulic swing actuator fixed within the cylinder 20 and connected to the hydraulic self-pipe 19. Although only one hydraulic pipe 19u is shown in the figure, two are usually arranged and connected to the hydraulic swing actuator 18, and the other end of the hydraulic pipe 19 is connected to the hydraulic hose 7.
Connected to equipment on the ground by ``''.

22E is a direction control fitting attached to the rotating shaft of the swing actuator 18, which is a hydraulic swing actuator 1.
8, when it is urged by hydraulic pressure, it rotates integrally by the shaft. 28 is a recess formed in the inside ru of the back of the head lO and the inside of the front of the direction control fitting 22, c? As will be described later, no force is applied to the swinging actuator 18 by the hydraulic pressure from the cylinder 16 or by the pushing device 8. In this state, only the entire length of the front surface of the metal fitting 22 on the side opposite to the back surface of the head 10 is maintained in a state where it is not connected.
The front surface of the protruding direction joint j metal fitting 22 is held by the operation of the swing actuator 18 so as not to be obstructed even when rotated. Back side of head 10 and direction control fitting 2
The shape of the front surface of 2 is shown in FIGS. 4 and 5, respectively.

According to this and FIG. 8, 24 is a concave portion provided on the head lO side, 21j is a convex portion provided on the head lO side, and the slope of the convex surface is the same as that of the opposing direction control fitting 22. Inclined part 2
The angle of inclination is taken to be the same as that of 9. 26 is the head 1014
11, and 27 is a direction fi control fitting 221! I is a convex portion provided corresponding to the recess 24, 28 is a nine flat portion similarly provided on the direction control fitting 22 side, 29 is an inclined portion, and 30 is a concave portion.

The engagement state and effects of the head lO and the direction control fitting 22 will be described later.

Reference numeral 31 is a double/seven yometer mounted behind the swing actuator 18, and its rotation axis 85 is in the direction 1j,
It rotates in conjunction with the shaft of the metal fittings 22. Reference numeral 82 denotes a tilt angle detector mounted inside the rear outer cylinder 18, which is supported by a rotating shaft 88 so as to always be in the vertical direction, and detects a so-called pitch puffer angle. 84 is a potentiometer that is engaged with the rotating shaft 8B of the inclination angle detector 32, and is a so-called rolling corner door! Detected.

In addition, although not shown, a small gyro device is installed inside the rear outer cylinder.
If there is a deviation, the deviation is converted into a total electrical signal.

Therefore, the operator examines the pitching angle, rolling angle, and horizontal angle of the propulsion drilling machine main body l shown on the display 8 and operates the swing actuator 18 to adjust the head part 10 when pushing into the soil. Run quickly in a given direction.

As already mentioned, when the hydraulic cylinder I6 is deenergized, the force of the spring 23 causes the distance L? keeping.

As mentioned above, the swing actuator 18 can rotate the direction control fitting 22 attached to its shaft by adjusting the hydraulic pressure through the two hydraulic pipes 19, and the rotation angle ID potentiometer 81 can be used to control the direction control fitting 22. It is always displayed, and from this angle, the position of the convex part 27 of the direction control fitting 22, that is, the head 1
You can know the direction in which 0 is set.

If it is determined that the vehicle is traveling straight, the direction control bracket 22 is rotated while checking the rotational position of the direction control bracket 22 from the position meter 81 on the display 8, and the convex portion 27 and the sloped portion on the front surface of the direction control bracket 22 are rotated. 29 and the recess 2 on the back of the head 10
4 and the convex portion 25, and if it is necessary to change the direction, similarly rotate the direction control fitting 22 to bring the convex portion 27 to a predetermined position.

Then, using the pushing device 8, the pushing device 3
and the propulsion drilling machine main body 1 is pushed forward.

Next, when the hydraulic cylinder 16 is energized by the operation panel 6, the piston rod of the hydraulic cylinder 16 is pushed forward, which causes the inner cylinder 20 to move forward. In the case of straight movement, the convex part 27 fits into the concave part 24, and the piston rond of the hydraulic cylinder 16 is pushed forward. The flat part 28 hits the part 26, the inclined part 29 whose inclination matches the convex part 25 hits, and the disk surface of the head 100 becomes perpendicular to the axis of the inner cylinder 20 until t, and the direction needs to be changed. In some cases, the convex portion 27 contacts the flat portion 26 and presses, causing the head 10 to tilt and furthermore, the inclined portion 29 touches the flat portion 26.
The disc surface of the head 10 is inclined from the direction perpendicular to the axis of the propulsion drilling machine main body l, and has the drilling direction, and the inclination of the head lO creates an earth pressure resistance difference on the front surface. The course of the entire propulsion drilling machine is corrected.

As the stroke of the piston rod of the hydraulic cylinder 16 increases, it is embedded in the soil by one stroke length integrally with the movable outer cylinder 11 and is propelled.

After the hydraulic cylinder 16 is deenergized, the direction control fitting 22 returns to the position with a good spacing between the spring 23 and becomes ready for the next direction adjustment.

The specific work procedure will be explained in FIG. 6.

(2) is the initial state, and the direction control fitting 22 is set at the predetermined O position.

■ is a state in which the cylinder 16 is extended.

■ After deenergizing cylinder 16 and holding it for the interval,
The state in which the direction control fitting 22 is aligned with the predetermined position.

■ is the state pushed by the pushing device 3.

And more ■、■、■、■、■、■、■・・・・・・・・・
・・■.

■,■ operate repeatedly.

As explained above, according to the apparatus of the present invention, pipes can be laid extremely accurately and quickly.

It goes without saying that the present invention can be applied to the installation of any of steel pipes, concrete pipes, and plastic pipes.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a pipeline installation method using an underground propulsion drilling device. FIG. 2 is a diagram schematically showing the underground propulsion drilling device for laying pipes according to the present invention. FIG. 8 is a sectional view of an example of the main body of the propulsion drilling machine used in the present invention. 4 and 5 are cross-sectional views taken along line AA and line BB in figure 8. FIG. 6 is an operational diagram of the apparatus of the present invention. 1... Propulsion drilling machine main body, 2... Partial pipe line, 8...
Pushing device, 4... Reaction plate of pushing device, 5... Hydraulic source, 6... Operation panel, 7... Hydraulic hose, 8...
Display, 9... Cable, 10... Head, 11...
・Movable outer cylinder, 1B... Rear outer cylinder, 15... Seal,
16...Hydraulic cylinder, 17.19...Hydraulic piping,
18... Hydraulic swing actuator, 20... Inner cylinder,
22...Direction control fitting, 28...Spring, 24
... recess provided on the back surface of the head 10, 25... head l
A convex portion provided on the back surface of O, 26... A flat portion provided on the back surface of the head 10, 27... A convex portion provided on the direction control fitting 22,
28...Flat portion provided on the direction control fitting 22, 29...
Similarly, inclined part, 80... Similarly, concave part, 81.84
...Potentiometer, 82...Inclination M angle detector. Procedural amendment/-t''' Birth date in October 1980 1, Indication of case 2, Name of invention 4 Cable, underground propulsion drilling device for laying pipes 8, Person making amendment Relationship to the case Address of patent applicant 5-15 Kitahama, Higashi-ku, Osaka City Name (21B)
) Sumitomo Electric Industries, Ltd. Representative President Tetsu Kawakami Department 4, Agent (1 person) Address 7th floor, Shin-Nakajima Building, 1-9-20 Nishinakajima, Yodoyou-ku, Osaka (Telephone: Osaka 804-8808) 6 , - Specification to be amended Detailed Description of the Invention Column Same as Claims Column 7, Contents of Amendment (11 Specification, page 10, line 1, next to "Iru.", □
``In addition, Buri Gu 23 is urine, spider, direction control fitting 2
In order to move the direction control fitting 22 backward, if a spring is built into the hydraulic cylinder 16, rotation of the direction control fitting 22 will not be hindered. ” is inserted. (2) Page 11, line 10, “Spring 2
Next to ``3'' is ``Aiike Hydraulic Cylinder Built-in Spring''.
Insert. (3) On page 13, line 6 of the same page, delete ``niyoi'' and insert ``or use a built-in spring in a hydraulic cylinder.'' . (4) The scope of claims is amended as shown in the attached sheet. 2 Claims +11 At least, a direction control fitting is attached to the rotating shaft of the swing actuator fixed to the inner cylinder, and a head is engaged to the tip of the movable outer cylinder into which the inner cylinder is slidably fitted, so that the direction can be adjusted. a hydraulic cylinder is fixed to a rear outer cylinder that is slidably fitted into the movable outer cylinder and is arranged to face the rear end of the inner cylinder, with the back surface of the head facing the direction control fitting; and includes a propulsion drilling machine main body in which the piston rod of the hydraulic cylinder is fixed to the inner cylinder, a pushing device, a hydraulic pressure source, and an operation panel, and the direction control fitting is rotated by operation from the operation panel. An underground propulsion drilling device for laying pipes, characterized in that the drilling direction is adjusted by the head. (2) Detectors for the rotation angle of the direction control fitting, pitching angle, rolling angle, and horizontal angle of the propulsion drilling machine are built into the main body of the propulsion drilling machine, and the values from these detectors are displayed on the ground display. An underground propulsion drilling device for laying pipes according to claim 1, characterized in that:

Claims (1)

[Claims] (1) At least a direction control fitting is attached to the rotating shaft of the swing actuator fixed to the inner cylinder, and the head is engaged with the tip of the movable outer cylinder into which the inner cylinder is slidably fitted so that the direction can be adjusted, A hydraulic cylinder is arranged in a rear outer cylinder which is slidably fitted into the movable outer cylinder and is arranged to face the rear end of the inner cylinder, with the back surface of the head facing in the direction via the control fitting and the spring. The piston rod of the hydraulic cylinder is fixed to the inner cylinder, and is fully equipped with a propulsion drilling machine main body, a pushing device, a hydraulic power source, and an operation panel, and by operation from the operation panel, the piston rod of the hydraulic cylinder is fixed to the inner cylinder. Detectors for the rotation angle of the direction control fitting, pitching angle, rolling angle, and horizontal angle of the propulsion drilling machine are built into the main body of the propulsion drilling machine, and the values from these detectors are displayed on the display on the ground. An underground propulsion drilling device for laying pipes according to claim 1, characterized in that: