JPH1018218A - Road pavement device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a high quality paving treatment, by providing a propulsive means thrusting the device at a low speed and an emulsion-supply means intermittently sprinkling an emulsion to a road face, to a transferable pavement device supplying paving materials and the emulsion on a road surface. SOLUTION: The propulsive speed of a pavement device 1 and the timing of an emulsion intermittently jetting from a nozzle 133 are preset on an operation panel 116 so as to work as a previously adjusted state. An auxiliary material W charged in a hopper is fed to the front part of a screw conveyor 122. In this time, a control part of the forwarding speed of the device is regulated by the instruction of a common controller manipulated on the operation panel 116 to control the rear wheel 113. The emulsion pump is intermittently driven by a timing controller and compressed air from an air pump 136 is supplied to the nozzle 133 and the emulsion L mixed with air is sprinkled on the front side road face G of a position where the auxiliary material W is placed. In this way, the emulsion L binding the auxiliary material W is effectively sprayed and a high quality pavement treatment can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a paving device and a paving method capable of paving a road surface or repairing a damaged paved road surface.

[0002]

2. Description of the Related Art Conventionally, various pavement methods have been proposed for laying a new asphalt layer or the like on a roadbed on a road, or for repairing an asphalt road which has been damaged by use and has cracks or depressions. Have been.

For example, a pavement material that has been heated and softened is laid flat on a roadbed, and a pavement method is applied to a pavement road surface by applying pressure with a road roller or the like, or a broken or aged asphalt layer is excavated and crushed. And a material that is mixed with a new pavement material and processed uniformly by the above-mentioned road roller to form a flat pavement road surface.

For example, Japanese Patent Application Laid-Open No. 60-126407 (known example 1) discloses a method in which a heat-responsive pavement granular material is sprayed on a road, irradiated with microwaves, softened and then solidified. .

On the other hand, Japanese Patent Application Laid-Open No. 61-178053 (known example 2) discloses a hydraulic spray nozzle, which is characterized in that a liquid paint is ejected from a paint passage and air is supplied from an air passage. For spraying.

[0006]

The above prior art and the invention of the prior art 1 do not carry out pavement processing by spraying an emulsion for bonding the auxiliary material together with the auxiliary material, but carry out pavement processing of excellent quality. It was difficult to carry out efficiently.

[0007] Further, the known example 2 relates to a coating treatment technique different from the pavement technique, and it is not technically easy to convert it immediately to the emulsion spraying for the pavement treatment.

A first object of the present invention is to provide a method capable of effectively spraying an emulsion for bonding a supplementary material on a road surface and performing a high quality pavement treatment.

A second object of the present invention is to provide an emulsion in which air-mixed emulsion can be scattered on a road surface so that a pavement process can be performed efficiently.

[0010] A third object of the present invention is to provide a hopper for auxiliary material capable of containing an emulsion.
It is to provide a product with improved space merits.

[0011]

Means for solving the above-mentioned problems are as follows.

(1) A movable pavement device capable of supplying an auxiliary material and an emulsion for bonding the auxiliary material onto a road surface, comprising a propulsion means for propelling at a constant speed, and an intermittent emulsion on the road surface. And an emulsion supply means capable of spraying the emulsion.

(2) The paving apparatus according to (1), wherein the propulsion means is capable of variable-speed propulsion drive, and the intermittent emulsion spraying period of the emulsion supply means is variable.

(3) The paving apparatus according to the above (2), wherein air mixed with the emulsion is injected into a nozzle of the emulsion supply means so that the emulsion and the air can be mixed.

(4) The pavement apparatus according to (3), wherein the nozzle and the air mixed with the emulsion are supplied to the nozzle while being urged in directions crossing each other.

(5) The pavement device according to (3), wherein the nozzle and the air mixed with the emulsion are supplied to the nozzle while being urged in a common direction.

(6) A movable paving device for supplying a supplementary material and an emulsion for bonding the supplementary material to a road surface, wherein the L-shaped frame constituting the hopper in the means for handling the supplementary material is in a hollow state. A pavement device that also serves as a tank for tonashi emulsion.

(7) A paving method using a movable paving device capable of supplying an auxiliary material and an emulsion for bonding the auxiliary material onto a road surface, wherein the paving device is intermittently driven while the paving device is being propelled. A pavement method in which the emulsion is sprayed on a road surface, and the supplementary material is supplied and pavement-treated on a road surface behind the emulsion.

(8) The pavement method according to the above (7), wherein air is mixed into the emulsion and sprayed on a road surface.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are as follows.

(Embodiment 1) (1) Overall Configuration A self-propelled paving device 1 according to Embodiment 1 is shown in FIG.
A lump / granular auxiliary material W made of a thermoplastic or thermosetting material or the like is loaded on the vehicle means 11 shown in FIG. 3 and the auxiliary material handling means 12 which can be spread on the road surface, an emulsion of bituminous material or the like. It is constituted by L supply means 13 and control means 14 operated by an operator.

(2) Configuration of Each Means Vehicle Means 11 The vehicle means 11 is a frame 1 supported by a front wheel 112 and a rear wheel 113 steered by a handle 111.
An engine 115 and an operation panel 116 are provided on the control unit 14, and the vehicle speed and the like are changed and adjusted by control means 15 which functions when the operator operates the control panel 116. This will be described in detail later. .

Next, the handling means 12 for the auxiliary material W will be described.
A hopper 121 is provided at a front position, and a pair of screw conveyors 122, 122 'and a screed 123 which can be moved up and down are arranged at a rear position. The supplementary material W supplied from the dump truck D is provided as shown in FIG. Is received in the hopper 121, and is transferred by the automatic bar feeder 124 provided at the bottom of the hopper 121.
The screw conveyors 122 and 12
2 'and the screed 123 can be laid flat and even.

Incidentally, as shown in FIG.
The pair of L-shaped frames 126 and 126 ′ constituting the hopper 121 by 5, 125 ′ are respectively undulating as indicated by broken lines with the horizontal axis as a fulcrum, and the supplementary material W remains in the hopper 121. It can be transferred onto the bar feeder 124 without any trouble and can be effectively transferred backward.

Further, the screed 123 can be lifted and moved by raising the lift arm 127 carrying the screed 123 by the hydraulic cylinder 128, and the pointing direction of the bottom surface of the screed 123 is adjusted by the adjusting tool 129. It is adjustable.

(3) Supply means 13 for emulsion L As shown in FIGS. 1 to 4, the emulsion L supplied from the tank 131 mounted on the vehicle means 11 is supplied to a supply line 132.
Is supplied to the nozzle 133 having an inner diameter of about 10 mm through
It can be sprayed on a road surface G in an area surrounded by a hood 134, and a guide groove for the emulsion L may be provided on the inner surface of the nozzle 133. Will be described later together with the control means 15 shown in FIG.

The nozzle 133 has an air line 1
Pressurized air from an air pump 136 can be injected via the air pump 35.

That is, as shown in FIG. 5, an injection port 133A is opened at the lower end of the nozzle 133 toward the road surface G, and a front air line 135 is provided at the side of the nozzle 133.
The air supply pipe 137 communicating with the nozzles 137 is connected, and the shape of the injection port 133A may be circular or non-circular, for example, a quadrilateral according to the type of the auxiliary work.

(4) Control means 15 As shown in FIG. 6, a vehicle speed control section 152 and a timing control section 153 are independently linked to a common control section 151 of the control means 15 which is manually operated by the operation panel 116. And a rear wheel 113 and a nozzle 133 via a propulsion drive 113 'and an emulsion pump 133', respectively.
Can be appropriately driven, and a bar feeder 124 is separately provided.
In addition, a feeder driving unit 124 ′ and a frame driving unit 126 ′ are linked to the L-shaped frames 126, 126 ′, respectively, and can be driven by operating the common control unit 151.

(2) Paving Method When carrying out the paving method described below, the operator previously matches the propulsion speed (V) of the paving device 1 with the timing (T) of the emulsion ejection intermittently ejected from the nozzle 133. After the operation panel 116 is operated and set to the set state, the supplementary material W is supplied from the dump truck D as shown in FIG. And the auxiliary material W is dropped on the upper surface,
The pavement processing can be performed by the subsequent load roller R.

That is, the auxiliary material W loaded on the hopper 121
Are successively transported rearward by a bar feeder 124 driven by a feeder driving unit 124 'and dropped onto the front of the screw conveyors 122 and 122' as shown in FIG. 3. In this case, the auxiliary device 1 has an operation panel. In response to an instruction from the common control unit 151 by the operation of the vehicle 116, the vehicle speed control unit 1
52 is controlled, and the rear wheels 11 are
3 is operated and propelled while being controlled to a desired speed.

Similarly, the emulsion pump 133 'is operated intermittently by the timing control unit 153 controlled by the common control unit 151, and pressurized air from the air pump 136 is supplied to the nozzle 133 to mix the air. The emulsion L in this state is intermittently scattered on the road surface G in front of the auxiliary material W being dropped.
3 is supplied with the emulsion L urged in the direction of the arrow (X), while compressed air is supplied from the pipe 137 in the direction of the arrow (Y) intersecting with the arrow (X). Therefore, the air is uniformly mixed into the emulsion L in the nozzle 133 and is scattered on the road surface G, so that the spray can be uniformly scattered with the scatter density adjusted.

By repeating the intermittent spraying process of the emulsion L, the nozzle 133 of the paving device 1 propelled at the propulsion speed V as shown in FIG.
_{In 1} ), the emulsion L is jetted for a moment, and then during the timing (T ₂ ), only the paving device 1 is propelled without jetting the emulsion L from the nozzle 133.

Next, at the timing (T ₃ ), injection is performed again for a moment.

As a result, as shown in FIG. 8, the emulsion L is sprayed from the nozzle 133 for the first time by the paving device 1 which is propelled at the propulsion speed (V), and is uniformly dispersed in the first area (a). Then, the second area (b) is scattered,
After this is repeated, the auxiliary material W is sequentially dropped on the upper surface.

Accordingly, there is a close relationship between the vehicle speed and the timing of the intermittent application of the emulsion L. If the vehicle speed is too high, a gap is formed between the spraying regions. In this case, the portions of the emulsion overlap each other, so that it is impossible to expect the uniform dispersion of the emulsion L.

It is needless to say that the vehicle speed and the timing of dispersing the emulsion L may be controlled by a microcomputer without manual operation.

Further, as shown in FIGS. 4 and 6, the frame driving units 125, 12 are controlled by the instruction of the common control unit 151.
By driving 5 ′, the L-shaped frames 126, 12
6 'is actuated, and the auxiliary material W in the hopper 121 is moved to the center, is transferred onto the bar feeder 124 without remaining, and can be effectively fed backward.

(Example 1) In the first embodiment, the paving device 1 is advanced at a speed of about 5 m / min at a very low speed, and the operation panel 116 is operated to operate the emulsion L from the nozzle 133 at intervals of 10 seconds. By injecting intermittently,
A good pavement treatment could be achieved by spraying on the road surface G at a rate of 0.5〓 / m ² , but the spreading amount was 0.3 to 0.6〓 / m ² when laying a general road. And the desired effect was obtained by spraying at a concentration of about 0.1 to 1.5 mm / m ² .

Emulsion L used was "decomposition accelerating tack coat" having asphalt as a main component and containing a polymer, an emulsifier, and a decomposition accelerating agent.

(Embodiment 2) FIG. 9 shows a nozzle 233 of Embodiment 2; however, this nozzle 233 differs from the nozzle 133 of Embodiment 1 in that
33 in that an air supply pipe 237 is disposed coaxially.

When the emulsion L is sprayed by the nozzle 233, the emulsion L supplied from the supply line 232 is urged in the direction of the arrow (X) in the direction of the ejection port 233A.
Similarly, the pressurized air supplied from the air line 235 is jetted in the direction of the arrow (X), so that the emulsion L in which the air is mixed is accelerated by the pressurized air and has a strong jetting force.
Since it is blown out from 33A, a uniform spraying effect can be expected.

[0043]

The present invention has the following remarkable effects.

Intermittent emulsion spraying prevents excessive spraying, enables low-cost and uniform spraying, and enables high-quality pavement processing by quickly and strongly bonding the auxiliary material to the road surface. sell.

The pavement process can be efficiently performed by freely adjusting the adhesive force by the emulsion mixed with air.

Since the emulsion can be stored in the hopper, the space can be effectively utilized.

[Brief description of the drawings]

FIG. 1 is a side view of a paving device according to a first embodiment.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a partially enlarged side view of FIG. 1;

FIG. 4 is a partially omitted front view of FIG. 1;

FIG. 5 is an explanatory view of the state in which the emulsion of FIG. 1 is scattered;

FIG. 6 is a functional block diagram of FIG. 1;

FIG. 7 is an explanatory view of an embodiment of the paving method of FIG. 1;

FIG. 8 is an explanatory view of a result of emulsion dispersion according to FIG. 1;

FIG. 9 is an explanatory view of an emulsion spraying state according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paving device 12 Handling means of supplementary material 113 Propulsion means (rear wheel) 13 Emulsion supply means 121 Hopper 126, 126 'L-shaped frame 133, 233 Nozzle W Supplementary material L emulsion

Claims (8)

[Claims] 1. A movable pavement device capable of supplying a supplementary material and an emulsion for bonding the supplementary material onto a road surface, a propulsion means for propelling at a constant speed, and an intermittent application of the emulsion to a road surface. A paving device provided with an emulsion supply means capable of spraying. 2. The paving apparatus according to claim 1, wherein said propulsion means is capable of variable-speed propulsion drive, and said intermittent emulsion spraying period of said emulsion supply means is variable. 3. A method according to claim 1, wherein said nozzle in said emulsion supply means comprises:
3. The pavement device according to claim 2, wherein air mixed with the emulsion is injected so that the emulsion and the air can be mixed. 4. The paving apparatus according to claim 3, wherein the emulsion and the air mixed into the emulsion are supplied to the nozzle by being urged in directions intersecting each other. 5. The paving apparatus according to claim 3, wherein an emulsion and air mixed in the emulsion are supplied to the nozzle while being urged in a common direction. 6. A movable paving device for supplying a supplementary material and an emulsion for bonding the supplementary material to a road surface, wherein an L-shaped frame constituting a hopper in a handling means of the supplementary material is in a hollow state. Pavement equipment that also serves as a tank for emulsion. 7. A paving method using a movable paving device capable of supplying an auxiliary material and an emulsion for bonding the auxiliary material onto a road surface, wherein the emulsion is intermittently driven while the paving device is propelled. A method of laying the auxiliary material on a road surface and supplying the supplementary material on a road surface behind the laying surface. 8. The pavement method according to claim 7, wherein air is mixed into the emulsion and sprayed on a road surface.