JPS6225911B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is useful for lifting underground objects such as submerged pipes to correct them, or for suspending and holding underground objects to prevent subsidence. The present invention relates to a method for winding a suspension strip such as a wire rope around an underground object in order to keep the object in place, and a pilot device used to carry out the method.

(Prior Art) Conventionally, one of the repair methods when a part of a buried pipe has subsided is to wrap a wire rope around the buried pipe and pull it up. In addition, to prevent underground pipes from sinking, wire ropes may be wrapped around the pipes and both ends of the pipes may be tied tightly to a permanent structure above ground.

In such cases, conventionally, a large amount of soil was dug up from the ground level to around the underground object, and a wire rope was manually wrapped around it.

However, the conventional method has drawbacks such as requiring a great deal of time and effort to dig up the ground and having to backfill it again.

(Object of the invention) The object of the present invention is to solve the above-mentioned conventional drawbacks,
To provide a method for automatically winding a suspension strip such as a wire rope around an underground object in a simple manner without digging up a large amount of soil, and to provide a pilot device for use in implementing the method. There is a particular thing.

(Structure of the Invention) The present invention provides a propulsion nozzle in which a pressure fluid such as water is ejected diagonally backward at the tip of one of a plurality of flexible hoses tied together; A pilot device is constructed in which a cutting nozzle that ejects pressurized fluid forward is attached to the tip of each hose, and the outbound and return routes for the pilot device are installed directly above underground objects such as buried pipes. The pilot device is inserted into the outgoing path and pressurized fluid is supplied from the rear end of the hose to cause the pilot device to circulate along the outer wall surface of the underground object, and then from the return path. This is a method in which the underground object is tied up with a suspended strip such as a wire rope whose tip is attached to the pilot device.

Further, the above-mentioned pilot device includes a plurality of flexible hoses tied together, a propulsion nozzle attached to the tip of one of the hoses so that pressurized fluid such as water is ejected diagonally backward, It consists of a cutting nozzle that is attached to the end of the other hose so that pressure fluid is ejected in the forward direction, and the pressure fluid is ejected from the cutting nozzle by supplying pressure fluid from the rear end of the hose. It is configured to cut soil, etc., and propel it forward by the propulsive force of the pressure fluid ejected diagonally backward from the propulsion nozzle, so as to circulate along the outer wall surface of the underground object.

Therefore, by fastening a suspension strip such as a wire rope to this pilot device, it is possible to automatically wrap it around an underground object.

(Example) An example of the present invention will be described based on the drawings.
In the figure, 1 is an underground object, and in the example, a buried pipe is shown. A suspension strip 2 such as a wire rope is wound around this underground object 1, but in the present invention, the suspension strip 2 is automatically wrapped without digging into the soil. The pilot device A is led by the propulsion force generated by the jet injection of pressurized fluid such as high-pressure water to orbit the underground structure 1, and the suspended strip 2 with one end fixed thereto automatically It is designed to be wrapped around. In this case, the direction of propulsion by the jet injection of water, etc. is generally the boundary between layers of different materials even underground (for example, the boundary between soil and underground objects).
It takes advantage of the fact that it moves toward This is because the forward force caused by the propulsive force of jet water, etc., has less resistance and follows the shortest path.

First, to explain the pilot device A,
A plurality of flexible pressure-resistant hoses 3, 4, and 5 are tied together with cable ties 6, and propulsion nozzles 7, 7 are attached to the tips of the hoses 3, 4 so that pressure fluid such as water is ejected diagonally backward. At the same time, a cutting nozzle 8 is attached to the tip of the hose 5 to eject pressure fluid in the forward direction. The rear end side of each hose is connected to a pump 10 via respective control valves 9, 9, 9, so that pressurized water is supplied to each hose. Note that the pressure fluid is jetted out from the cutting nozzle 8 at a predetermined angle as shown in FIG. 3B, so that the entire bundled hose can be easily moved forward.

In the above configuration, the configuration may be such that there are two hoses and the propulsion nozzle 7 is attached to one and the cutting nozzle 8 is attached to the other, but as in the embodiment, there are at least three hoses and the cutting nozzle 8 is attached to the other. It is desirable to arrange the propelling nozzles 7, 7 on both sides of the center to increase the propulsion force and to provide equal injection force to both sides to ensure straight forward movement. Furthermore, with such a configuration, the overall traveling direction can be controlled by controlling the ejection forces of the propulsion nozzles 7 on both sides.

Next, use a boring machine etc. to remove the underground objects 1.
A through hole 11 is drilled up to just above the metal,
An outgoing route 13 and an incoming route 14 are formed by installing a partition plate 12 made of wood or the like. And this outbound trip 1
3, insert the pilot device A from the tip,
Pump 10 pumps pressurized fluid (water in the example) through each hose. As a result, the soil in front is cut by the pressure water jetted from the cutting nozzle 8, making it easier for the pilot device to move forward, and the jet water jetting force jetting diagonally backward from the propulsion nozzles 7 becomes a propulsive force. , the whole thing moves forward.
In this case, as described above, the propulsion direction is forward along the layer boundary, so the pilot device A goes around the outer surface of the underground object 1, is introduced into the return path 14, and ascends inside this, It will return to the ground. When the tip of the suspension strip 2 is fastened to the returned pilot device A and the entire hose is pulled back, the suspension strip 2 is automatically wrapped around the underground object 1. Alternatively, the tip of the suspended strip 2 may be fixed to the pilot device A in advance, and the suspended strip 2 may be made to go around the outer surface of the underground object 1 together with the pilot device A and return. In addition, when pulling out the pilot device A, it may be pulled back as described above, but it is also possible to remove the rear end of the hose and pull it out from the front end side.

Tighten both ends of the hanging strip 2 wrapped around the underground object 1 as described above to a permanent structure above ground,
It is possible to prevent the underground object 1 from sinking by lashing it down, or to correct the sinking of the underground object 1 by pulling up the hanging strip 2.

(Effects of the Invention) According to the method for tying underground objects using wire ropes or the like according to the present invention, a pilot device with an extremely simple configuration is inserted into the outgoing route formed from the ground to just above the underground object, and By force-feeding water or other pressurized fluid from the hose at the rear end of the pilot device, the pilot device automatically goes around the target buried object and returns to the ground on the return trip. By fixing one end, the hanging strip can be easily wrapped around the target buried object.

The outward and return paths for the pilot device can be easily formed by drilling a hole using a boring machine or the like and inserting a partition plate into the hole, and since the hole for this purpose only needs to be relatively small, the drilling and backfilling are easy. It's easy. Therefore, there is no need for large-scale excavation from the ground to the target buried object, manual wrapping, or even backfilling of a large amount of excavated soil, making it possible to perform the work easily and quickly. can.

The pilot device used to carry out the above construction method consists of multiple pressure-resistant hoses tied together and a cutting nozzle and a propulsion nozzle attached to their tips, and the structure is extremely simple and can be implemented at low cost. can do.

[Brief explanation of the drawing]

The drawings show an embodiment of the method of securing underground objects using wire ropes, etc. according to the present invention, and a pilot device used for carrying out the method. FIG. 3A is a perspective view of the apparatus, FIG. 3A is a side view showing each nozzle, and FIG. 3B is a plan view of the cutting nozzle. A...Pilot device, 1...Underground object, 2
...Suspension strip, 3, 4, 5...Pressure hose, 7...
... Propulsion nozzle, 8 ... Cutting nozzle, 9 ... Control valve, 10 ... Pump, 11 ... Through hole, 12 ...
Partition plate, 13...Outbound trip, 14...Return trip.

Claims (1)

[Scope of Claims] 1. Among a plurality of flexible hoses tied together, one hose has a propulsion nozzle at the tip thereof that sprays a pressure fluid such as water diagonally backward, and the other hose A pilot device is constructed by attaching a cutting nozzle that ejects pressure fluid forward to the tip of each of the pilot devices, and the forward and return paths for the pilot device are connected to directly above an underground object such as a buried pipe. After forming the above-mentioned pilot device into the outgoing path and supplying pressure fluid such as high-pressure water from the rear end of the hose, the pilot device is made to circulate along the outer wall surface of the underground object. 1. A method for binding an underground object, which comprises returning the object on a return journey and tying the object buried underground with a hanging strip such as a wire rope whose tip is attached to the pilot device. 2. A pilot device for guiding a hanging string such as a wire rope when it is automatically wound around an underground object such as a buried pipe, which is a pilot device for guiding a hanging string such as a wire rope, which uses multiple flexible ropes tied together. A hose, a propulsion nozzle that is attached to the end of one hose so that pressurized fluid such as water is ejected diagonally backward, and a propulsion nozzle that is attached to the end of the other hose that ejects pressurized fluid forward. By feeding pressure fluid from the rear end of the hose, the pressure fluid ejected from the cutting nozzle cuts soil, etc., and the pressure is ejected diagonally backward from the propulsion nozzle. A pilot device characterized in that it is configured to move forward using fluid propulsion and orbit along the outer wall surface of an underground object. 3. There are three or more hoses, the cutting nozzle is arranged in the center, and the propulsion nozzles are arranged around it, and the ejection pressure of the pressure fluid ejected from each propulsion nozzle is controlled. 3. The pilot device according to claim 2, wherein the pilot device is configured such that the direction of travel can be controlled by.