JPH0544793B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mobile microwave heating device,
In particular, the present invention relates to a microwave heating device suitable for peeling or heating concrete walls, rocks, etc.

[Conventional technology]

The high-frequency dielectric heating effect of microwaves can be used to peel concrete walls and destroy rocks. In order to uniformly irradiate a wide concrete wall with microwave power, it is necessary to move sequentially along the wall surface. Generally, a microwave irradiator and a microwave oscillator are placed on a self-propelled mobile device, and the two devices are coupled by a waveguide. The reason why a waveguide is used as a microwave conduction path is that the structure of the microwave irradiator has a shape (horn shape) with the tip of the waveguide widened, so it is easy to match the two mechanically. This is because it is easy to manufacture, and also has the advantage of having little transmission loss in terms of electrical characteristics.

[Problem that the invention seeks to solve]

However, a microwave heating device used for purposes such as breaking concrete requires a large amount of electric power.

As a result, the microwave oscillator (particularly the power transformer) that is the power supply source has to become larger and considerably heavier.

Placing such a large microwave oscillator together with a microwave irradiator on a mobile device leads to an increase in the size of the mobile device, and the degree of freedom in the mobility of the mobile device is lost. This causes a problem in that it is not possible to smoothly irradiate a more detailed area (for example, a corner of a concrete wall).

Therefore, an object of the present invention is to provide a mobile microwave heating device that can perform microwave irradiation work more freely and smoothly.

[Means for solving problems]

In order to solve the above problems, the present invention provides a microwave heating device in which a microwave irradiator that irradiates microwave power from a microwave oscillator toward a heated object is attached to a moving device and microwave heated while moving. In this, the moving device has a self-propellable main body and a movable part that can be moved independently from the main body, and the microwave irradiator is attached to this movable part, and the microwave oscillator is attached separately from the moving device. The microwave oscillator and the microwave irradiator are connected by a flexible coaxial line.

[Effect]

According to the configuration of the present invention described above, only the microwave irradiator is mounted on the movable part that is movable independently of the self-propelled main body of the mobile device, and the microwave oscillator is mounted separately from the mobile device. Since the microwave oscillator and the microwave irradiator are connected by a flexible coaxial line (e.g. coaxial cable), the moving device can transport or move only the relatively lightweight microwave irradiator. The mechanical strength or structure required is sufficient. In addition, since the movable part on which the microwave irradiator is mounted is made smaller,
Microwaves can be applied to even smaller areas. In addition, since the microwave irradiator and the micro oscillator are connected by a flexible coaxial line, the relative positional deviation between them is not a problem and they can be moved freely, giving you more freedom in your work. It can be made to stand upright, which improves workability.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of a microwave heating device according to the present invention. In FIG. 1, a moving device 1 includes a main body part 2 that can be self-propelled, and a movable part 3 that extends upward from the main body part 2 and can bend independently of the main body part 2. The main body portion 2 is configured to be self-propellable along a concrete wall 4, for example, on a track. The movable part 3 has a plurality of arms pivotally connected to each other and can be bent by a hydraulic cylinder or the like, and a mounting table 5 is provided at the tip so as to be able to swing up and down.

A microwave irradiator 6 is mounted and placed on the mounting table 5. This microwave irradiator 6 is coupled via a coaxial cable 7 to a microwave oscillator 8 installed at a location different from the mobile device 1 .

There are two possible ways to connect the microwave irradiator 6 and the coaxial cable 7. One of them is to bend the core wire 9 of the coaxial cable 7 into a loop shape and connect it to the microwave irradiator 6, as shown in FIG. The other type is a straight type in which the core wire 9 of the coaxial cable 7 extends to the vicinity of the tip of the microwave irradiator 6, as shown in FIG. 10 is a matching road for antireflection.

Here, it should be noted that the outer diameter of the coaxial cable 7 should not be larger than the outer diameter of the microwave irradiator 6. The reason for this is that if the outer diameter of the coaxial cable 7 is larger than the outer diameter of the microwave irradiator 6, the coaxial cable 7 will come into contact with one wall surface when irradiating a corner, and the coaxial cable 7 will not reach the corner completely. This is because there is a possibility that irradiation cannot be performed.

Next, in use, the movable part 3 is operated to bring the microwave irradiator 6 close to the surface of the concrete wall 4, and microwave power is supplied from the microwave oscillator 8 via the coaxial cable 7. The microwave irradiated from the microwave irradiator 6 is absorbed into the concrete wall surface 4, heats the water vapor inside, and the concrete 4 is crushed by an explosive action. While carrying out the above steps, the entire body is moved by the main body 2 of the moving device 1, and the crushing work is performed continuously. At this time, if necessary, the movable part 3 or the mounting table is moved independently to crush fine details. The depth of crushing can be adjusted by appropriately selecting the moving speed.

〔Effect of the invention〕

According to the configuration of the present invention described above, while only the microwave irradiator is mounted on the movable part of the mobile device that is movable independently of the self-propelled main body, the microwave oscillator is installed separately from the mobile device. Since the microwave oscillator and the microwave irradiator are connected by a flexible coaxial line (for example, a coaxial cable), the moving device only carries or moves the relatively lightweight microwave irradiator. mechanical strength or structure. Furthermore, since the movable part on which the microwave irradiator is mounted is made smaller, it is possible to irradiate microwaves to even smaller places.

In addition, since the microwave irradiator and microwave oscillator are connected via a flexible coaxial line, the relative positional deviation between them is not an issue, and they can be moved freely, giving you greater flexibility in your work. This improves work efficiency.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a microwave heating device according to the present invention, and FIGS. 2 and 3 are schematic diagrams showing an example of coupling a microwave irradiator and a coaxial cable. DESCRIPTION OF SYMBOLS 1... Moving device, 2... Main body part, 3... Movable part, 4... Concrete wall, 5... Mounting table, 6...
...Microwave irradiator, 7...Coaxial cable, 8...
...Microwave oscillator, 9...Core wire, 10...Matching load.

Claims (1)

[Scope of Claims] 1. A microwave heating device in which a microwave irradiator that irradiates a heated object with microwave power from a microwave oscillator is attached to a moving device and moves while performing microwave heating, comprising: the moving device. has a self-propelled main body and an independently movable part, the microwave irradiator is attached to the movable part, the microwave oscillator is installed separately from the moving device, and the microwave oscillator is installed separately from the moving device; A microwave heating device characterized in that a microwave oscillator and a microwave irradiator are coupled by a flexible coaxial line.