JPS61229090A - Projection apparatus for underground hole forming machine - 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 [Field of Industrial Application] The present invention relates to a launcher for transporting underground boreholes, and more particularly, to a launcher for transporting underground boreholes. The invention relates to a launcher equipped with a launcher. This is used in the field of small-diameter propulsion methods that can be used, for example, in underground pipe work.

[Prior art]

In recent years, underground penetrating machines have been attracting attention as a safe and economical small-diameter propulsion method that can be used to promote the undergrounding of cables and underground pipe work such as water supply and sewerage construction projects. It has become to.

An underground drilling machine operates a piston using compressed air, which applies continuous impact to the body, and uses this force to penetrate the ground. For example, the underground penetrating machine is
The one described in Japanese Patent No. 5721 is well known. The external shape is, for example, a cylindrical one with a pointed tip like an arrowhead.When a pond perforator is installed in the through-hole direction and compressed air is supplied to the piston chamber in the body via a hose, the piston moves to the top of the body. The body moves forward due to the impact that collides with the inner surface of the part, making it possible to form a hole with a large outer diameter. Desired piping work is then carried out by inserting a buried pipe into the hole.

By the way, underground penetrating machines usually only move in a straight line, but their straight line performance is quite high. In on-site construction work, it is not limited to cases in which the direction of hole penetration is horizontal; there are cases in which it is desired to tilt the initial blind hole position of the underground penetrating machine and propel the machine in an inclined direction within the ground. A launcher that makes such a thing possible is described in Japanese Utility Model Application Publication No. 59-102689. This has rollers that press the underground penetrating machine placed on the launch pad against the guide surface of the launch pad, as well as expansion and contraction means for tilting the launch pad in a vertical plane with respect to the support base for adjusting the elevation angle. ing. According to such a launcher,
Even if the support base cannot be installed in a horizontal location, the elevation angle of the launch pad can be changed with respect to the support base. As a result, the preparation work for installing the launcher is simplified, and there is an advantage that the underground penetrating machine can be supported with a desired elevation angle.

However, underground drilling work must be carried out while avoiding obstacles such as buildings and existing buried objects, and it is often necessary to select a firing direction that allows work to be carried out appropriately according to the surrounding conditions such as roads. . Just having the above-mentioned function of adjusting the elevation angle makes it impossible to launch the underground penetrating machine in any desired inclined direction. Therefore, in order to make adjustments in directions other than the angle of elevation, such as installing the support stand at an angle, it is necessary to accurately level the installation ground at the launch site, which is a problem that requires time and effort. .

On the other hand, in penetrating work, as the underground penetrating machine on the launch pad begins to penetrate the ground one after another from the launch pad, the portion resting on the launch pad decreases. At that time, the rollers attached to the launch pad could not be moved to follow the advancing underground penetrating machine, and the pushing against the guide surface of the launch pad was insufficient to maintain the posture of the penetrating machine. or become impossible.

As a result, even if the direction of the launch pad is determined accurately, the initial penetration direction is likely to be misaligned, which poses a problem that essentially degrades the performance of the underground penetrating machine.

[Purpose of the invention]

The present invention was made in view of the above-mentioned problems, and the purpose is to
The firing direction can be arbitrarily adjusted to the desired direction, and the penetrating posture of the underground penetrating machine on the launcher can be adjusted at the initial drilling stage when the underground penetrating machine begins to penetrate into the ground. It is an object of the present invention to provide a launcher for transporting through underground holes, which can reliably hold.

[Structure of the invention]

The features of the underground penetration delivery launcher of the present invention will be explained with reference to FIG. 1 as follows. A turning table 2 is provided which can turn with respect to a base 1 fixed to the ground, and a turning angle adjusting means 5 for changing the turning angle thereof is attached. The through-hole gutter holder 11 that is elevated relative to the turning table 2 is accompanied by an elevation angle adjustment means 12 that changes the elevation angle thereof,
It is provided on the turning table 2. A plurality of fastening means 24, which receive the propulsive reaction force of the underground penetrating machine on the penetrating machine pedestal 11, are movably attached to the penetrating gutter pedestal 11.

[For production]

A base 1 is installed on the ground, and the base is fixed to the ground using anchors or the like. The direction of the through-hole gutter cradle 11 is determined so as to correspond to the penetrating direction of the underground penetrating machine 13, and the turning table 2 is rotated or the through-hole gutter cradle 11 is raised and lowered, and the set angle is adjusted by each adjusting means. Maintained by 5.12. Penetrating machine cradle 11
The upper underground penetrating machine 13 is pressed against the penetrating gutter holder by a plurality of tightening means 24, and a propulsion reaction force is taken. When compressed air is supplied to the underground piercing machine 13, the underground piercing machine moves forward by using the force exerted by the tightening means 24 as a reaction force. When the tip penetrates into the ground, the rear part of the tightening means 24 releases the pressure on the underground penetrator 13.

The supply of compressed air is temporarily stopped, the removed tightening means is moved to the front part of the through-hole gutter holder 11, and the underground piercing machine 13 is pressed again. As long as the underground penetrating machine remains on the through-hole gutter holder, the direction of the underground penetrating machine 13 can be stabilized by pressing it with as many tightening means 24 as possible.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof.

FIG. 2 is a plan view of the underground penetration delivery launcher of the present invention, which is provided with a substantially flat base 1 and a turning table 2 that can be rotated on the base 1. The base 1 has inclined insertion holes 3 at its four corners, and anchors are driven into each of them to fix the base to the ground.

The turning table 2 is arranged so as to overlap the base, and in this example is a diamond-shaped flat plate, fastened by a pin body 4 at the rear of the base 1, and can be turned around the pin body 4. Turning angle adjusting means 5 for turning the turning table 2
is attached between the base 1 and the turning table 2 at a position forward of the pin body 4. This consists of base 1 and turning table 2.
Brackets 6 and 7 and long screws 8 are respectively fixed to
The head of the threaded rod is supported by a bracket 6, and the leg is screwed into a female thread 9 formed on the bracket 7. The bracket 6 has an arcuate shape when viewed from above, and the hole 10 through which the threaded rod 8 passes is a long hole parallel to the surface of the turning table 2. Therefore, when the threaded rod 8 is rotated to turn the turning table 2, even if the bracket 7 moves in an arc around the aforementioned pin body 4,
The angle of the threaded rod 8 changes with respect to the bracket 6 which is fixed to the base 1 and inserted, so that smooth turning can be performed.

Such a turning table 2 is provided with a piercing machine cradle 11 shown in FIG. 1 that is tilted up and down relative to it, and is provided with an elevation angle adjustment means 12 that changes the elevation angle thereof. Penetrating machine cradle 11
In this example, since the cross-sectional shape of the underground penetrating machine 13 is round, it is V-shaped (see Fig. 3), and is centered around the pin body 15 of the bracket 14 fixed to the turning table 2 at the rear thereof. , is attached so that it can swing vertically. On the other hand, the elevation adjustment means 12 located approximately in the center of the through-hole machine holder 11 is connected to a threaded rod 16 that is rotated while taking a reaction force on the upper surface of the turning table 2 and which is attached to the through-hole machine holder 11. It consists of a lifting member 17. As shown in FIG. 3, the elevating member extends left and right with respect to the perforator holder 11, and has a female threaded portion 18 at both ends into which a threaded rod 16 is screwed, and the perforator holder in the center. A bracket 19 facing the lower surface of 11 is fixed. That bracket is a through-hole machine cradle! (2) It is arranged so as to be sandwiched between a pair of brackets 20 fixed to the lower surface, and both brackets are bendable by a pin body 21. As a result, when the threaded rod 16 is rotated, the elevating member 17 moves up and down, and the bracket 2
0 is pushed up, and the penetrating machine holder 11 can be elevated around the pin body 15. At this time, the bracket 20 tilts together with the perforator holder 11, but since it is bent relative to the bracket 19 via the pin body 21, elevation is not hindered. In order to prevent the lower end of the threaded rod 16 from shifting on the turning table 2, it is inserted into the frame member 22 fixed to the turning table 2, and a retaining ring 23 is installed to prevent it from coming out.
is installed.

The above-mentioned hole-piercing machine pedestal 11 has a clamp that presses the ground-piercing machine 13 placed thereon against the guide surface 11a of the hole-piercing machine pedestal and receives the propulsive reaction force of the ground-piercing machine 13. Attachment means 2
4 is removably attached. This tightening means is arranged in at least two stages, and in this example, three are employed. Its structure consists of a holding member 25 that is attached to receive the penetrating machine holder 11 from below, a push plate 26 that presses the underground penetrating machine 13 from above, and two threaded rods that fasten both at left and right positions. It consists of 27. Note that a reinforcing rib 28 is fixed to the holding member 25, and a nut 29 is fixed to a laterally extending projecting portion 25a of the piercing machine holder 11.

According to the launching device of this example, the underground penetrating machine 13 can be installed in a desired direction as described below, and a stable position can be established to maintain the attitude of the underground penetrating machine during the initial drilling. You can try to push it. As shown in FIG. 4, a recessed space 32 for installing the underground drilling machine 13 and a space 33 on the reaching side are formed on the side of the ground 31 under the road 30 to be penetrated. The base 1 is installed at a position that should be the base point of the ground 31 to be penetrated, and the base is fixed to the installation ground 32a using an anchor 34 or the like. The direction of the penetrating machine cradle 11 is determined so as to correspond to the penetrating direction of the underground penetrating machine 13, and the turning angle adjusting means 5 rotates the turning table 2, and the elevation angle adjusting means 12 allows the penetrating gutter cradle 11 to be rotated. The set angle is fixed by each adjusting means. Finally, the underground perforator 13 on the perforator holder 11 is pressed against the perforator holder 11 by the plurality of tightening means 24 to take a propulsive reaction force.

It should be noted that the illustrated adjusting means and tightening means have the advantage that the desired operation is achieved by rotating each threaded rod, that the structure is simple, the operation is simple, and that minute adjustments can be made easily.

When compressed air is supplied into the underground piercing machine 13 through the hose 35, the underground piercing machine moves forward while taking a reaction force against the pressing by the tightening means 24. When the tip penetrates into the ground, as shown in FIG. 5, the rear part of the clamping means 24 releases the pressure on the underground penetrator 13. The supply of compressed air is temporarily stopped, the removed tightening means is moved from the position shown by the two-dot chain line to the front part of the through-hole gutter holder 11 shown by the broken line, and the underground penetrator 13 is pressed again. As long as the underground perforator 13 is guided on the perforator pedestal 11, as many tightening means 24 as possible
The penetrating direction of the pond perforator 13 is maintained. Note that when the underground penetrating machine completely penetrates into the ground, the outer surface of the underground penetrating machine is held in the ground, and the forward direction of the machine is maintained and the propulsion reaction force is maintained by the frictional force.

〔Effect of the invention〕

As can be seen from the description of the embodiments above, the present invention provides a turning table that can rotate with respect to a base fixed to the ground, and a through-hole gutter holder is attached to the turning table so as to be able to move up and down. Since the plurality of tightening means that take up the propulsion reaction force of the underground penetrator on the gutter cradle are removably attached to the gutter pedestal, there are no restrictions on the selection of the firing position of the underground penetrator. Also, the firing direction can be arbitrarily adjusted to a desired direction. Moreover, there is an effect that the underground penetrating machine on the through-hole gutter holder can be reliably held in the desired penetrating direction at the initial stage of penetrating when the underground penetrating machine starts penetrating.

[Brief explanation of the drawing]

Figure 1 is a front view of the underground penetrating aircraft tail launcher of the present invention, Figure 2
The figure is a plan view, Figure 3 is a view taken along the line ■-■ in Figure 1, Figure 4 is an overall schematic diagram of the piercing work, and Figure 5 is an underground penetration hole using a tightening means in the initial piercing state. The pressing of the machine is an explanatory diagram of the state. 1- base, 2- turning table, 5- turning angle adjustment means, 11-.
- Piercing machine pedestal, 12. - Elevation/elevation angle adjustment means, 13 - - Underground penetrating machine, 24 - Tightening means, 32 a - Ground.

Claims (1)

[Claims] (1) A turning table is provided that can rotate with respect to a base fixed to the ground, and a turning angle adjustment means for changing the turning angle of the turning table is provided, and a penetrating machine cradle that looks upwards with respect to the turning table is provided. is provided on the turning table with an elevation angle adjusting means for changing the elevation angle thereof, and a plurality of tightening means receiving the propulsive reaction force of the underground penetrating machine on the penetrating machine pedestal, A launcher for an underground penetrating machine, characterized in that it is movably mounted on a penetrating machine cradle.