JPS595114Y2 - Rotational propulsion and pushing direction correction device for buried small diameter pipes - Google Patents

Description

[Detailed description of the invention] This application uses a small diameter pipe push-hole burying method in which small diameter pipes are buried underground without digging up the land, in which the leading pipe is pushed and propelled while rotating. If the guide tube installed at the tip of a small diameter tube becomes misaligned in the propulsion direction, the position of the tip of the guide tube can be easily corrected by stopping rotation and pushing the guide tube into a straight line. This invention relates to a rotational propulsion and pushing direction correction device for buried small diameter pipes.

The present application also proposes that if the leading blade part is simply wedge-shaped, propulsion will not be carried out well in the case of a gravel layer, gravel layer, rock debris, etc. This invention relates to a rotary propulsion and pushing direction correction device for buried small-diameter pipes, which corrects the propulsion direction while excavating gravel layers, gravel layers, and rock debris to bury the small-diameter pipes underground.

To explain one embodiment now, a leading pipe 2 is formed with a leading blade part 1 in the shape of a cylinder cut obliquely or a cone divided into two, and the slope of the leading blade part 1 is formed. Part 3 or horizontal part 4
A cutting blade 5 is provided vertically on one side of the guide tube 2, a target plate 6 is fixed inside near the rear of the leading tube 2, and a light emitting diode 7.8 is placed at the center of the target plate 6 and at a desired direction spaced apart from the center by a certain distance. An airtight hollow part 9 is provided between the front side of the target plate 6 and the rear side of the leading blade part 1, and a dry battery 10 connected to a light emitting diode 7.8 is provided in the hollow part 9. The entire structure is such that a small diameter pipe 12 can be connected to the rear end via a pipe joint 11.

In the following description, the sharp tip side will be referred to as the front part and the large diameter part side will be referred to as the rear part, based on the drawings.

The details of the embodiment described above will be explained with reference to the drawings.If we explain the case of FIG. A semi-conical leading blade part 1 is formed by dividing the leading blade part 1 into two (in the lateral direction of the diameter part) and deleting one side, and the center side of the leading blade part 1 which has been divided into two is made into a horizontal part 4, and the remaining part is The conical surface on one side is formed as a slope portion 3.

A cutting blade 5 is provided in the center of the semicircular surface left after removal, perpendicular to the horizontal part 4 and up to the tip of the leading edge part 1, and the cutting edge 5 of the semicircular surface 1b is fixed. Both sides of the blade 5 are cut obliquely toward the large diameter portion to form earth and sand removal surfaces 1C.

A cylindrical part 1e is fixed to the large diameter part 1d, and a target plate 6 is fixed to the center of the cylindrical part 1e at right angles to the longitudinal direction of the cylinder and in an airtight manner, and a hollow space is formed between the rear surface of the large diameter part 1d and the target plate 6. 9, and set the center point of the target plate 6 and an appropriate position (for example, a position about 10 to 20 mm away from the center point) in the upright direction in which the cutting blade 5 is attached (the direction in which the cutting blade 5 is rising). ) is provided with a light emitting diode 7.8, a dry battery 10 is inserted into the hollow part 9, and the dry battery 10 and the light emitting diode 7.8
A leading pipe 2 is formed by connecting these.

The height h of the cutting blade 5 is preferably the same length as the radius of the large diameter portion 1d, which is suitable for excavating a hole that facilitates the movement of the subsequent small diameter pipe 12, but the height h is the same as the radius of the large diameter portion 1d. The area should be designed and determined according to the soil quality, etc.

In the case of FIG. 4, the cylindrical portion at the rear of the leading tube 2 is formed by cutting the cylinder obliquely, closing the cut portion with a closing plate 1f, and cutting the cross section obliquely into a wedge shape when viewed from the side. A target plate 6 is fixed airtightly at right angles to the front-rear direction of the cylindrical part 1g inside the cylinder part 1g, and a light emitting diode is installed at a certain distance from the center point on the center point of the target plate 6 and the tip line of the oblique part. 7.8 is fixedly provided.

The light emitting diode 7.8 is a hollow part 9 of the leading tube 2 having a wedge-shaped cross section.
A dry cell battery 10 is provided inside, and the light emitting diode 7.8 is connected to the dry cell battery 10 to emit light.

Then, the cutting blade 5 is made perpendicular to the center of the front and back direction of the closing plate 1f.
is fixed to the entire length l' or the front half l'' from the central part,
Its height is the same length h' as the diameter of the cylindrical portion 1g, or the height h'' of the front half from the center of the cylindrical portion 1g.

Among the light emitting diodes B8 described above, when the light emitting diode 7 is colored red and the light emitting diode 8 is colored green, it can be made easier to inspect, but the gist of the present application can also be achieved by using the reverse or other colors. It's not something to deviate from.

In addition, a pipe joint 14 having a pyramidal screw or a male screw 13 carved on the outside is fixed inside the rear end portions of the circular tube portions 1e and 1g of the leading tube 2.

Separately, a connecting pipe joint 16 with a pyramidal screw or female screw 15 carved on the outside is provided on the inside of the rear end of the small diameter pipe 12, and the female screw or the female screws 13 and 15 are screwed airtightly on the inside of the front end. A male screw or a female screw 17 that can be screwed together is provided so that the leading pipe 2 and the small diameter pipe 12 can be screwed together, and the small diameter pipes 12 and the small diameter pipes 12 can be screwed together.

Note that the outer diameters of the leading tube 2 and the small diameter tube 12 are made to be the same, but they do not have to be the same diameter.

However, instead of using the pipe joint 14 and the connecting pipe joint 16, a female screw or a male screw is carved inside the rear end of the cylindrical parts 1e and 1g or the small diameter pipe 12, and a small diameter of the same diameter as the outer diameter of the leading pipe 2 is used. Caliber pipe 12
On the outside of the front end, a male screw or a female screw that can be screwed into the male screw is carved on the outer side of the front end. Since the diameters can be connected flush, buried propulsion can be made very good.

In the present application, a rotation device 18 and a pushing device 19 such as a jack are separately manufactured and attached to the rearmost small diameter pipe 12n of the small diameter pipe 12 that is continuously connected to the leading pipe 2 due to the above structure. Alternatively, the rotating device 18 and the pushing device 19 are manufactured integrally and attached to the small diameter pipe 1.
2...12n and the leading pipe 2 are rotated and pushed together to propel the pipe, and just before the connected small-diameter pipe 12 or 12n is buried underground, the next small-diameter pipe 12 or 12n is The pipe 12n' is connected, and the rotating device 18 and the pushing device 1 are connected.
9 is replaced and rotated again to propel the small diameter pipe 12~
12n.

12n' is connected to a desired length and buried to the destination. However, if a deviation occurs in the direction of movement of the leading pipe 2 during this rotational propulsion, the light emitting diode 7 at the center of the target plate 6
The center point 20a of the transilluminator (transcilla) 20 provided appropriately at the rear end of the small diameter pipes 12 to 12n, 12n' connected to
When a deviation occurs (see Figure 6), the rotation of the leading tube 2 is stopped once, and the green light emitting diode 8 is connected to the transit 2.
0 toward the center point 20a side, and align the small diameter tube 12~ on the line C connecting the light emitting diode 8 and the center point 20a.
When 12 n and 12 n' are pushed in linearly, the leading pipe 2
The light-emitting diode 7 moves toward the center point 20a of the transit 20 as the slope portion of the light-emitting diode 7 receives the reaction force.

When the light emitting diode 7 and the center point 20a match, rotational propulsion is performed again.

In this way, the burial is progressed sequentially while correcting the direction of propulsion.

Therefore, according to the present application, since the deviation between the center point 20a of the light emitting diode 7 and the transit 20 can be corrected in millimeter units, the small diameter tubes 12 to 12n' can be buried in a straight line with almost no bending, and the small diameter tube 12n at the rearmost end can be buried in a straight line with almost no bending. Since it is possible to see through almost a straight line from ' to the target plate 6 near the tip, correction can be made more accurately.

Incidentally, the inclination angle θ of the leading pipe 2 is calculated and determined according to the soil quality.

Further, when a mountain-shaped rectangle 21 is formed at the tip of the cutting blade 5, it is possible to facilitate excavation and make it easier and more reliable to cut rock, gravel, and gravel layers.

In the present invention, a leading pipe 2 is provided with a leading blade part 1 in the shape of a cylinder cut obliquely or a cone divided into two parts, and a slope part 3 of the leading blade part 1 is provided. Alternatively, a cutting blade 5 is provided vertically on one side of the horizontal portion 4, a target plate 6 is fixed inside near the rear of the leading pipe 2, and a target plate 6 is fixed at the center of the target plate 6 and at a desired direction spaced a certain distance from the center. A light emitting diode 7.8 is provided, an airtight hollow part 9 is provided between the front side of the target plate 6 and the rear face of the leading blade part 1, and a dry battery 10 connected to the light emitting diode 7.8 is provided in the hollow part 9. At the same time, a small-diameter pipe 12 can be connected to the rear end of the leading pipe 2 via a pipe joint 11.Since a cutting blade is provided perpendicularly to the wedge-shaped leading blade, rotation of the leading blade The cutting blade excavates and propels 5, and the cutting blade easily excavates and propels, especially in gravel layers, gravel layers, and rock, and when there is a deviation in the direction of propulsion, the reaction force received by the slope due to the straight movement of the leading pipe. Since deviations in the direction of propulsion can be immediately corrected, small-diameter pipes can be buried in any type of ground.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the construction method, Figure 2 is a sectional view of the leading pipe and the small diameter pipe connected to it, and Figure 3 is II of Figure 2.
4 is a sectional view of the leading pipe on the other side and the small diameter pipe connected to it, FIG. 5 is a sectional view taken along the v-v line of FIG. 4, and FIG. , 2 is a front view showing the relationship between the transit and the target plate. A is a front view showing the relationship between the transit and the target plate. A is a case where the center points of the transit and the target plate match, and an error occurs in the opening. C is a case where the direction is corrected. This shows the case where they have been modified to match. 7 and 8 are perspective views of the guide tube shown in FIGS. 2 and 4. FIG. 1... Leading blade part, 2... Leading pipe, 3.
...Slope part, 4...Horizontal part, 5...
...Cutting blade, 6...Target plate, 7...
・Light-emitting diode, 8... Light-emitting diode, 9
...Hollow part, 12...Small diameter pipe.

Claims (1)

[Scope of utility model registration request] A leading pipe 2 is formed with a leading blade part 1 in the shape of a cylinder cut obliquely or a cone divided into two parts, and the leading blade part 1 is formed.
A cutting blade 5 is attached to either one side of the slope part 3 or the horizontal part 4.
At the same time, a target plate 6 is fixed inside near the rear of the leading pipe 2, and light emitting diodes 7.8 are provided at the center of the target plate 6 and at a desired direction spaced apart from the center by a certain distance, and An airtight hollow part 9 is provided between the side and the rear side of the leading blade part 1, a dry battery 10 connected to a light emitting diode 7.8 is provided in the hollow part 9, and a pipe joint 11 is provided at the rear end of the leading pipe 2. A device for rotational propulsion and pushing direction correction of a buried small-diameter pipe, which allows a small-diameter pipe 12 to be connected through the hole.