JPS60126407A - Road paving method and apparatus - 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 relates to improvements in road paving construction methods and road paving equipment.

Conventionally, the construction method for paving roads with thermoplastic granular materials such as asphalt, coal tar, and pitch involves heating the granular materials for paving in advance to a melted and softened state, and then spreading it on the road surface in a layered manner. Also, a method of solidifying under pressure is used, but this construction method not only requires a large amount of thermal energy for heat treatment of paving granular materials, but also causes a large loss of thermal energy, and has extremely low work performance. bad.

This invention was made to solve the above-mentioned problems, and its main purpose is to provide a road paving method and a road paving device that can significantly save thermal energy and improve work efficiency. It is something.

The road pavement construction method according to the invention involves spreading paving granular material such as thermoplastic or thermosetting material in a layer on the road surface, and then irradiating it with microwaves to melt and soften the granular material by internal dielectric heating effect. After that, the material is solidified by applying pressure.

Furthermore, the road paving device according to the present invention includes a driving vehicle body, a prime mover, an alternator connected to the prime mover, a microwave oscillator connected to the alternator, and a microwave emitted from the oscillator to the road surface. It is characterized by being equipped with an irradiator that guides the irradiation toward the target.

As the road paving granular material, thermoplastic materials such as asphalt, coal tar, and pitch, and thermosetting materials such as Bakelite are used.

・3) In the drawing, / is a running vehicle that constitutes a road paving device, with an iron frame rollerco as the front wheel and two tires on the left and right sides 3 as the rear wheels. A support part is positioned at a required height in the front of the vehicle body to vertically moveably support a microwave irradiator l used for the purpose described below. That is, j is a support plate supported on the vehicle body side, and B is a movable plate below it. Screw shafts 7 are installed in each of the four sides of movable plate B, and each screw shaft 7 is attached to the support plate. j is penetrated and supported, and a gear l is screwed into its upper end by its inner threaded portion, forming a pair of gear teeth.

l are commonly meshed with worm gears pivotally supported on a support plate, and each worm gear 9 is meshed with a worm 10,
A bevel gear 1 fixed to one end of the shaft of this worm 10
2 and a bevel gear /l fixed to one end of another shaft /3 are meshed, and the gear /, 1 fixed to the other end of said shaft /3 is meshed with
The bevel gear attached to the tip of the handle 7, which is operated from the vehicle body side by the handle 6, is engaged, and the irradiator is turned on through the gear mechanism by rotating the handle. The supporting movable platen 6 can be moved up and down.

The microwave irradiator 4 has a rectangular waveguide lα, a trumpet-shaped guide frame Ilb connected to its lower side, a wire mesh radio wave tracing plate lie horizontally protruding from its opening, and its tip. The rectangular waveguide α is supported by penetrating the movable platen B.

A rectangular waveguide /q opposite to the rectangular waveguide lα of the movable plate B is supported through the central part of the support plate j, and the waveguide /d is connected to an impedance supported on the vehicle body side. 3 matching stub chips A-J1 power monitor, 2/, are connected to the microwave oscillator power via an isolator n. Jα is an operating handle of the oscillator.

The microwave oscillator power is connected by a cable to a commercial frequency alternating current generator J driven by a diesel engine J, which is the prime mover of the vehicle body.

The isolator n and the microwave oscillator 23 include:
A cooling water supply pipe I7 and a drain pipe 3 are connected to a water supply pump Kota driven by an M diesel engine J. A radio wave output measuring meter 3/ of the meter panel X and three radio wave reflected power measuring meters are connected to the power monitor tacho/.

The water supply bomb has a cooling water circulation spray cooling tank 33.
are combined. The world is the delivery tube, 3! ; is collection pipe, 3
6 is a sprayer, and a filter body using activated carbon is built into the thin delivery pipe. The circulation spray cooling tank 33 is provided to prevent the microphone four-wave oscillator and isolator from deteriorating due to scale precipitation in the cooling water, and to maintain the quality of the cooling water, and is normally necessary. If not, it can be omitted.

A water spray pipe 37 with a nozzle is provided at the front part of the running vehicle body/ above the iron frame reeler which is the front wheel, and a water supply pipe 31 connected thereto is connected to a water tank vehicle (not shown).
has been contacted. 3 is a cock for controlling the amount of water supplied, and is located near the driver's seat.

Next, asphalt paving construction performed using the road paving device will be explained.

When constructing asphalt pavement, first, as shown in Figure 1, aggregate material such as crushed stone or cracked stone is laid on the road surface.
On top of that, unheated asphalt granules B are spread to form a layer.

On the other hand, on the running vehicle side, a water supply pump driven by a diesel engine J starts circulating cooling water to an isolator n and a microwave oscillator, and the same engine starts generating electricity from the alternator j. and
The microwave oscillator okara oscillates microwaves by operating the handle Jα, and the microwaves are irradiated toward the asphalt layer via the irradiator l that is applied to the asphalt layer.

When irradiating microwaves, adjust the height of the microwave irradiator from the ground in advance by operating the handle, keep the height from the ground as low as possible, and prevent radio wave shielding. Board IIc.

(7) 11d prevents microwaves from leaking into free space. In addition, adjust the three stubs of the 3 stub chinys J to achieve impedance matching on the receiving end side and the sending end side. The deflection is maximized and the deflection of the radio wave reflected power measuring meter 32 is minimized. At this time, the isolator n absorbs the reflected power by heating the water supplied to it, so that the magneto oscillation tube in the microwave oscillator J oscillates with a constant load and the oscillation tube is protected. It has become.

When the asphalt granule layer is irradiated with microwaves from the irradiator 1 as described above, the asphalt granules are uniformly heated from the inside in a short time due to the internal dielectric heating effect of the microwave, and are melted and softened. In addition, there is no deterioration due to the oxidation effect of conventional materials with poor thermal conductivity caused by long-term flame heating. Then, the melted and softened asphalt granule layer moves through the steel frame opening 1 as the traveling vehicle body advances. ) It is pressed by the first roller 2 and cooled by water sprayed from the water sprinkling pipe 37 in front of the iron frame roller, and is solidified and formed into a flat surface.

As described above, according to the present invention, there is no need to heat-treat the asphalt granules to be spread on crushed stones in advance during road shafting construction, so the time-consuming heating work can be completely eliminated. Not only can the asphalt granules be heated by irradiating them with microwaves to generate an internal heating effect on the dielectric material, it has the advantage of being able to uniformly heat and melt the material in a short time. As the heating energy can be greatly reduced and the high energy oscillation efficiency of the magnetron is synergistically demonstrated, compared to the conventional asphalt pavement construction method, the energy efficiency is greatly improved, time is shortened, and work efficiency is improved. At the same time, the improvement of

Further, the road paving device according to the present invention can fully exhibit its functions even when used for repair work to flatten the uneven surface of an asphalt paved road. In other words, it is an epoch-making method that can exhibit various beneficial features such as the ability to even out unevenness due to the elimination of the melting temperature difference between the conventional repair material and the raising material in the case of raising the repair material. It is an invention.

[Brief explanation of the drawing]

FIG. 1 is a side view of a road paving device showing an embodiment of the present invention, FIG.
FIG. 3 is a plan view of the water sprinkler pipe. /-m-traveling vehicle body, ---iron frame p-ra, 3-tire roller, Kuumike radio wave irradiator, 1-support plate, 6-movable plate, 7-screw shaft, r-gear, deworm gear, 10-
Worm, / Koh bevel gear, 13-shaft, / Hiro bevel gear, /
S-gear, 16-handle, /7-quad, /♂-bevel gear, 19-waveguide 1.1tl-j stub tuner 1
．． 2/- power monitor, Q2- isolator, jJ-
Microwave oscillator 1. V-diesel engine, g-alternator, easy cable, 27-water supply pipe 1.2J-discharge pipe, cotter water supply pump, 3o-meter panel, 3/-meter for measuring radio wave output, 32-radio wave reflection Power measurement meter, 3
3-Circulation spray cooling tank, 3-one delivery pipe, 3S-recovery pipe, 3
6-Sprayer, 37-Water pipe, 3-piece water supply pipe, 3q-Control cock. Patent applicant Morio Akiyama (//) -q et al. Figure 3 37 ooooooooooooo.

Claims (1)

[Claims] (1) A thermoplastic or thermosetting granular material for pavement is spread on the road surface in a layered manner, and microwaves are then irradiated to melt and soften the granular material by an internal dielectric heating effect. Also, a road pavement construction method that is characterized by pressurization and solidification. (2) Asphalt, coal tar,
The road pavement construction method according to claim 1, wherein granular materials such as pitch and Bakelite are used. (8) A driving vehicle body includes a prime mover, an alternator connected to the prime mover, a microwave oscillator connected to the alternator, and an irradiator that guides the microwave emitted from the oscillator toward the road surface. A road paving device characterized by being equipped with. (4) The road paving device according to claim 3, wherein the front wheel of the traveling vehicle body is an iron frame roller, and a microphone four-wave irradiator is positioned in the front part thereof. (5) The prime mover of the running vehicle is a diesel engine,
Claim 3 in which an alternating current generator is connected to it.
Road paving equipment as described in section.