JPS6073968A - Weld-cutting and drilling apparatus of concrete structure - 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 is capable of melting llI structures and other structures such as reinforced concrete, metal materials such as steel frames, refractories such as fire bricks, structures in rocks or underwater, and objects to be melted such as rock reefs. This invention relates to equipment for fusing and drilling concrete structures, etc., for drilling, cutting, and demolishing concrete structures.

Conventionally, fusing and drilling work on the workpiece has been carried out using gas cutting, powder lance, oxygen lance, etc. However, in the case of gas cutting, the cutting torch is easily damaged and the cutting of concrete, structures, etc. However, in the case of powder lances, powder such as iron powder is continuously fed to the oxy-fuel combustion part, so some of the powder remains unburned and may be released into the surrounding area. There was a problem that the powder would scatter, and there was a risk that the oxygen or compressed air used to feed the powder could backfire and cause an explosion. In addition, in the case of oxygen lances, each time the lance wears out, a new lance must be attached to the lance holder, the process must be repeated by re-igniting the lance, which is troublesome, and it is difficult to automate the process, resulting in problems such as poor work efficiency. had.

Therefore, in order to solve the above-mentioned problems, we have developed a method for fusing and drilling concrete structures, etc. (Patent Application No. 108 of 1982).
No. 597) was created.

The present invention is an apparatus used in the invention of the method, which efficiently performs fusing and drilling work on a workpiece to be melted such as a concrete structure, and improves the fusing and drilling ability thereof.
The purpose is to make it easier to automate fusing and drilling work, and its gist is to make it possible to melt and drill holes in concrete structures and other workpieces through the combustion and reaction of metals. The device includes at least an oxygen jetting port that jets oxygen, a combustible gas spouting port that spouts flammable gas,
Equipped with a metal wire feed port for feeding the metal wire at the tip of the nozzle,
This is based on the fact that the metal wire is formed in such a way that it can be fed into the combustion zone of oxygen and combustible gas at a predetermined distance from the nozzle tip for combustion and reaction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, 1 indicates a nozzle, and this nozzle 1 has a metal wire feed port 5 which feeds the metal wire 4 to the front of the tip of the nozzle 1.
, an oxygen jet port 2'' for jetting oxygen forward of the tip of the nozzle 1, and a combustible gas jet port 3 for jetting flammable gas forward of the tip of the nozzle 1, respectively.

Reference numeral 10 indicates a reel on which the metal wire 4 is wound, and this reel 10 is automatically or manually coated with gold fiI! It is configured so that the i14 can be unwound and continuously fed to the nozzle 1. 11 is an oxygen cylinder that supplies oxygen to the nozzle 1 to spout oxygen from the oxygen jet port 2; and 12 is a combustible gas cylinder that supplies flammable gas to the nozzle 1 to jet the combustible gas from the combustible gas jet port 3. It's a gas cylinder. Note that the blowout of oxygen and combustible gas and the feeding of the metal 4 may be controlled so that the cutting and drilling operations can be performed automatically. Moreover, these may be performed manually.

Note that the oxygen and combustible gas supplied from the oxygen cylinder 11 and the flammable gas cylinder 12 are ejected from the oxygen jet port 2 and the combustible gas jet port 3, respectively, and are ejected from the nozzle 1.
Burned at a predetermined distance 1 from the tip,
The tip of the metal wire 4 is fed into this combustion area, where the metal wire 4 burns and reacts. The combustion of the metal wire 4 causes the molten particles generated in the reaction part to be blown away by the jetting force of the oxygen and combustible gas toward the workpiece H such as the concrete structure, and the molten particles and the oxygen and combustible gas The object H to be melted is cut and perforated by the flame of the hot gas. Incidentally, the blowout of oxygen and combustible gas and the feeding of the metal wire 4 may be controlled so that the fusing and drilling operations can be performed automatically. Moreover, these may be performed manually.

The flammable gas used is, for example, a slow-burning gas such as propane or butane, or a gas with a light specific gravity such as propylene, and is combusted together with oxygen from a position approximately 10 cm to 20 cm away from the tip of the nozzle 1. It is arranged so that the tip of the nozzle 1 is not affected by heat or the like.

Any suitable material can be used for the metal M4, and the structure of the metal wire 4 may be formed by twisting together a large number of thin metal wires, for example, or can be set as desired.

The nozzle 1a shown in FIGS. 1 and 2 is provided with a metal wire feed port 5 at the center of its tip, an oxygen jet port 2 is provided around the metal wire feed port tm, and this oxygen jet port A plurality of combustible gas jet ports 3 are arranged along the periphery of the fuel cell 2.

The nozzle 1b shown in FIG.
A plurality of combustible gas nozzles 3 are provided around the oxygen nozzle 2, and a shielding oxygen nozzle 2a is provided around the entire combustible gas nozzle 3. The structure is such that its combustion power is further increased.

The nozzle 10 shown in FIG. 4 is provided with an oxygen jet port 2 at the center of its tip, a plurality of metal wire feed ports 5 arranged along the periphery of the oxygen jet port 2, and further provided with a metal wire feed port 5. A plurality of flammable gas jet ports 3 are formed around the entire circumference of the opening 5, which promotes combustion and reaction of the metal wire 4, generates a large amount of molten particles, and burns the material to be melted H. The structure is such that cutting and drilling can be completed in a short time. Furthermore, although not shown, a shielding oxygen outlet 2a may be provided around the entire combustible gas outlet 3 of the nozzle 1C. A metal wire feed port 5 is provided at the center of the tip, and a high pressure oxygen spout 2b is provided around the metal wire feed port 5 to blow out high pressure oxygen supplied from a high pressure oxygen cylinder 111). A plurality of combustible gas outlets 3 are arranged along the periphery of the oxygen outlet 2b, and further,
A plurality of low-pressure oxygen jet ports 2C are arranged along the entire periphery of the combustible gas jet port 3 to jet out low-pressure oxygen supplied from the low-pressure oxygen cylinder 11c. 6 in the diagram
is equipped with a metal wire feed [15 I] is a cylinder for metal wire feed;
The metal wire feeding cylinder 6 is constructed with appropriate dimensions depending on the diameter of the gold fiiS wire 4, etc., and can be interchangeably mounted on the nozzle 1d. In particular, by arranging the tip surface of the metal wire feeding cylinder 6 to be located slightly further back than the tip surface of the nozzle 1d (see FIG. 5), the high pressure oxygen ejected from the high pressure oxygen outlet 2b is transferred to the metal wire. The metal wire 4 becomes concentrated toward the wire 4, promoting combustion and reaction of the metal wire 4, and the molten particles generated by this combustion and reaction are transferred to the workpiece H.
Now you can blow it away in a concentrated manner, and the melting,
The drilling ability becomes even stronger.

The nozzle 1 is configured so that oxygen and flammable gas do not leak out of the nozzle 1 or mix with oxygen and combustible gas at the portion where the metal wire 4 is fed. Ru.

Therefore, at least the oxygen spout 2 that spouts oxygen,
A combustible gas outlet 3 for ejecting flammable gas and a metal wire feed port 5 for feeding a metal wire 4 are provided at the tip of the nozzle 1,
A metal wire 4 is combusted within the combustion area of oxygen and combustible gas at a predetermined distance from the tip of the nozzle 1.
Since it was formed so that it could be fed to cause a reaction, the metal F
J 4 can be reliably and continuously fed into the combustion zone of oxygen and combustible gas, resulting in efficient combustion and reaction of the metal wire 4, and efficient cutting and drilling of the workpiece H. You will be able to do this.

In particular, by providing the metal wire feed port 5 at the center of the tip of the nozzle 1, and arranging the oxygen jet port 2 around it and the combustible gas jet port 3 around it, the molten particles of the metal wire 4 can be It is possible to intensively blow U straight toward the workpiece H without scattering to the side, and strong cutting and drilling ability can be obtained.

Further, by winding the metal wire 4 onto the reel 10, the metal wire 4 can be easily fed to the nozzle 1, and automatic continuous feeding of the metal wire 4 can be easily achieved.

According to the nozzle 1d having the high-pressure oxygen outlet 2b and the low-pressure oxygen outlet 2c, high-pressure oxygen is mainly ejected from the high-pressure oxygen outlet 2b for cutting the workpiece, and low-pressure oxygen Low-pressure oxygen is mainly ejected from the spout 2C to melt the object 1 (to be melted), so that the object to be melted H can be cut and drilled efficiently and in a short time.

As explained above, according to the present invention, the nozzle is not easily damaged, is suitable for use in continuous cutting and drilling work for a long time, has extremely high cutting and drilling capabilities, and further improves work efficiency. The fusing and drilling operations can be easily automated, and excellent effects such as high safety during the fusing and drilling operations can be achieved.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a schematic diagram of the device showing a nozzle section in cross section, and FIGS. 2 to 4 show embodiments of the nozzle. .1a, 1b,
1c, 1d-... Nozzle, 2... Oxygen spout, 2a
...Oxygen outlet for shielding, 2b...High pressure oxygen outlet,
2C...Low pressure oxygen outlet, 3...Combustible gas outlet, 4...Metal wire, 5...Metal wire feed port, G...Metal wire feed cylinder, 10. ... Reel, 11... To oxygen cylinder, 11b... High pressure oxygen cylinder, 11G... Low pressure oxygen cylinder, 12... Flammable gas cylinder, 1-1...
- Object to be melted.

Claims (1)

[Claims] 1. In a device that makes it possible to fuse and perforate objects to be melted, such as concrete structures, by combustion and reaction of metal, at least an oxygen whispering port that spews out oxygen and a combustible gas that spews out flammable gas. The nozzle tip is equipped with a spout and a metal wire feed port for feeding the metal wire, and the metal wire is combusted within the combustion area of oxygen and combustible gas at a predetermined distance from the nozzle tip. An apparatus for fusing and drilling concrete structures, etc., characterized in that it is formed so that it can be fed to cause a reaction.