JPH0959952A - Pavement clogging remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to favorably remove a clogged article filled up in a clearance produced on a pavement by providing an air current formation means which shapes up a gas flow along high pressure water injected from an injection nozzle. SOLUTION: When an elimination device is connected to the rear part of a transportation truck and an engine is driven while advancing on a road of a drainage pavement (a), tugging the device, high pressure water is injected from an injection nozzle 8. The injected high pressure water is sprayed over the pavement surface (h) passing by a through hole 20 of a connecting board 19 of a cover 16. Clogged articles, such as earth and sand or dust and dirt, filled up in a clearance of the drainage pavement (a) is floated up by a spray pressure. A mixture of the clogged article and water is sucked up from a suction opening 11 of a suction duct 10 and is collected by a receiver tank. As a result, it is possible to spray the high pressure water over the pavement surface (h) while maintaining the impact force, and remove the clogged articles, such as earth and sand or dust and dirt, filled up in the clearance of the drainage pavement (a).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing clogging materials such as earth and sand and dust that are clogged in voids of pavement, such as drainage pavement.

[0002]

2. Description of the Related Art First, drainage pavement will be described with reference to FIG. 5. Drainage pavement a is defined as a subgrade c, a base layer d, and a surface layer f having water-permeable voids e on a roadbed b. A pavement formed by sequentially laying it. When rainwater flows into the void e of the surface layer f and guides it to a gutter (not shown) for drainage, it causes a factor that impedes running safety such as a smoking phenomenon or a hydroplaning phenomenon. Has a function to reduce.
Further, since the void e of the surface layer f has a sound absorbing ability, it also has a function of reducing tire noise when the vehicle is running.

In such a drainage pavement a, however, the voids e of the surface layer f are clogged with earth and sand or dust due to the influence of vehicle traveling, wind, etc., and the above-mentioned excellent functions are degraded in a relatively short period of time. There is an inconvenience. Therefore, as a device to recover the various excellent functions of drainage pavement,
The one shown in FIG. 6 is known.

This device is provided with a plurality of jet nozzles g arranged along the width direction of the road, and jets high-pressure water from the nozzles g toward the surface h of the drainage pavement a, Clogged substances such as earth and sand or dust clogged in the voids e of the surface layer f due to the pressure are floated on the pavement surface h, and the mixed water (sludge water) of the floated clogged substances and water is sucked into the suction duct i.
It is designed to be collected by suction.

[0005]

However, in such a device, during the injection of pressure water or the spraying of the pavement surface h, the pressure water and the sludge water generated by the spraying of the pressure water are scattered around. . Therefore, there is a problem that a large-scale suction device having a strong suction capability is required in order to efficiently suction and collect these.

The present invention has been made in order to eliminate such inconvenience, and suppresses the scattering of pressure water and sludge water generated by spraying of the pressure water to the surroundings, and at the same time the spraying force of the pressure water to the surface layer. It is an object of the present invention to provide a device for removing clogging that can improve suction and recovery efficiency by suppressing attenuation.

[0007]

In order to achieve such an object, a device for removing clogging of a pavement according to claim 1 is provided.
An injection nozzle that ejects pressured water toward the pavement surface and raises the clogging matter clogged in the voids of the pavement to the pavement surface by this ejection pressure, and a suction duct that suctions and recovers the clogging matter that floats on the pavement surface. In the apparatus including, an air flow forming means for forming a gas flow along the pressure water jetted from the jet nozzle is provided.

A device for removing clogging according to claim 2 is
The gas is air.

[0009]

According to the first aspect of the invention, a kind of curtain film is formed on the pressure water by forming a gas flow along the pressure water jetted from the jet nozzle, and the pressure water and the pressure water are sprayed. While suppressing the scattering of the generated sludge water to the surroundings, the jetted pressure water is prevented from diffusing in the air before reaching the pavement surface, thereby increasing the water hammer force on the pavement surface. In addition, the gas flowing along the pressurized water flows in through the suction port of the suction duct, so that the wind velocity in the suction duct is increased and the suction capability is enhanced, thereby obtaining a synergistic effect of the water flow and the air flow.

According to the invention of claim 2, in addition to the invention of claim 1, the use of air as the gas facilitates the formation of an air stream along the pressurized water.

[0011]

DETAILED DESCRIPTION OF THE INVENTION An example of an embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic side view showing a state where a device for removing clogging of a drainage pavement, which is an example of an embodiment of the present invention, is attached to a rear portion of a transportation truck, and FIG. 2 is a partially broken view of the removing device. FIG. 3 is a plan view, FIG. 3 is a sectional view taken along the line − in FIG. 2, and FIG. 4 is an explanatory view for explaining the removing device. In this embodiment, drainage pavement is taken as an example of pavement. Further, since the structure of the drainage pavement is the same as that described in the conventional example, the same reference numerals as those in the conventional example will be given and described.

First, the structure will be described with reference to FIGS. 1 to 3. In this removing device, a movable arm 2 formed by combining a parallel link mechanism and a cylinder device at the rear portion of the track 1.
An outer box 3 attached via the. The outer box 3 has a rectangular parallelepiped shape that is long in the width direction of the track 1, and has upper and lower portions opened. A water pipe 4 extends along the longitudinal direction of the outer case 3 (the width direction of the track 1) in the upper part of the outer case 3 on the side away from the track 1. Water pipe 4
Is fixed to the side plate 5a of the outer box 3 on the side away from the track 1 via a bracket 7. As shown in FIGS. 2 and 3, a plurality of injection nozzles 8 for injecting high-pressure water are provided on the lower side of the water pipe 4 at equal intervals in the axial direction of the water pipe 4. The injection nozzle 8 is arranged so as to face diagonally downward to the left in FIG. 3 so that an extension line in the directing direction reaches the surface h of the drainage pavement a. As a result, the high-pressure water sprayed from the spray nozzle 8 is sprayed on the pavement surface h, and the spraying pressure causes the clogging of the voids f of the surface layer e to float on the pavement surface h. In addition, as shown in FIG. 1, the high pressure water hose 9 is attached to the water pipe 4.
One end of c is connected, and the other end of the high pressure water hose 9c is connected to a high pressure water pump 28a described later.

On the side plate 5b on the side of the truck 1 in the outer box 3,
A plurality of substantially fan-shaped suction ducts 10 that expand downward are arranged along the longitudinal direction of the outer box 3. Suction duct 10
Is fixed to the side plate 5b via the bracket 12,
In FIG. 3, the tip end portion is inclined obliquely downward to the right and is disposed in front of the spray position S of the high-pressure water sprayed from the spray nozzle 8. The suction duct 10 has a suction port 11 that extends along the longitudinal direction of the outer box 3 at the tip portion, and clogging materials such as earth and sand and dust that have floated from the suction port 11 to the pavement surface h can be used for the pavement surface. It is sucked and collected together with the water sprayed on h. In this embodiment, the suction port 11 of the suction duct 10 is opened at a position 10 to 20 mm above the pavement surface h, but not limited to this.

The back side of the tip of the suction duct 10 (side plate 5b)
On the side), a partition plate 13 for partitioning the inside of the outer box 3 into a side plate 5b side and a side plate 5a side is fixed by screws. Partition board 1
3 is made of, for example, a rubber plate material, and the tip end thereof projects downward from the suction port 11 by an appropriate length and faces the pavement surface h. As shown in FIG. 1, one end of the suction hose 14 is connected to the upper part of the suction duct 10, and the other end of the suction hose 14 is connected to a receiver tank 24a described later. A bracket 15 is attached to the front side of the tip of the suction duct 10 (on the side plate 5a side) by screwing or the like. The bracket 15 extends in the longitudinal direction of the outer box 3 so as to cover the spray position S of the high-pressure water, and both ends thereof reach both end plates 5c and 5d of the outer box 3. A cover (air flow forming means) 16 that surrounds the high pressure water sprayed from the spray nozzle 8 is connected to the bracket 15.

The cover 16 is similar to the bracket 15 in that
The outer box 3 extends in the longitudinal direction and its both ends reach both end plates 5c and 5d of the outer box 3, and are connected to the bracket 15 at the upper position of the high pressure water so as to be parallel to the injection direction of the high pressure water. An extended upper plate 17, a lower plate 18 extending in parallel to the jet direction of the high-pressure water at a lower position of the high-pressure water, and end portions of the upper plate 17 and the lower plate 18 on the jet nozzle 8 side. The injection nozzle 8
It is formed in a substantially box shape by the connecting plate 19 that is connected in front of. Passage holes 20 through which the high-pressure water jetted from the jet nozzles 8 pass are formed in the connecting plate 19 in correspondence with the number of the jet nozzles 8.

A partition plate 20a for partitioning the inside of the outer box 3 into the side plate 5b side and the side plate 5a side is fixed to the lower end of the lower plate 18 with screws. The partition plate 20a is formed of, for example, a rubber plate material, and its tip end is protruded from the lower end of the lower plate 18 by an appropriate length to face the pavement surface h.
The partition plate 20a, the cover 16, the bracket 15, the partition plate 13, and the seal rubber 23 (described later) attached to the lower portions of the both end plates 5c and 5d of the outer casing 3 form a substantially sealed space T, and the space T A high-pressure water spraying position S and a suction port 11 are arranged therein. Then, by applying a suction force to the suction duct 10 in the space T, the space T is brought into a negative pressure state to promote the lifting of the above-mentioned clogging object on the pavement surface h.

As shown in FIGS. 2 and 3, casters 21 and 22 are attached to both side plates 5a and 5b of the outer box 3 so as to be spaced apart from each other in the longitudinal direction of the outer box 3.
In addition, a seal rubber 23 that seals the lower peripheral edge of the outer box 3 is attached to the lower part of the outer box 3 along the entire circumference of the outer box 3 in a state of protruding from the lower part of the outer box 3. .

As shown in FIG. 4, the carrier 1a of the transport truck 1 is provided with a receiver tank 2 from the rear to the front.
4a, the water tank 24, and the engine 25 are sequentially arranged in parallel. A vacuum pump 26 and a vacuum pump hydraulic motor 27 for driving the vacuum pump 26 are attached to the upper portion of the receiver tank 24a. The other end of the suction hose 14 described above is connected to the receiver tank 24a.

A regeneration water pump 28 and a high-pressure water pump 28a are attached to both sides of the lower portion of the water tank 24. A regenerative water pump hydraulic motor 30 for driving the pump 28 is attached to the reclaimed water pump 28, and a filter 28b is interposed between the pump 28 and the receiver tank 24a. High pressure water pump 28a
Is attached with a hydraulic motor 31 for a high-pressure water pump for driving the pump 28a, and the other end of the high-pressure water hose 9c described above is connected to the high-pressure water pump 28a.
Water is supplied to the water tank 24 from a water truck 32 through a water supply pipe 33.

The engine 25 includes a vacuum pump hydraulic pump 34 for supplying hydraulic oil to the vacuum pump hydraulic motor 27 by power transmission from the engine 25, and the engine 2
A hydraulic pump for water pump 30 and a hydraulic pump for water pump 35, which supply hydraulic oil to the hydraulic motor 30 for reclaimed water pump and the hydraulic motor 31 for high-pressure water pump, respectively, are attached by power transmission from 5. A hydraulic control valve 36 that controls the supply of hydraulic oil is interposed between the water pump hydraulic pump 35 and the reclaimed water pump hydraulic motor 30 and the high-pressure water pump hydraulic motor 31.

Next, the operation of the removing device will be described.
As shown in FIGS. 1 and 4, when the removal device is connected to the rear portion of the transportation truck 1 and the engine 25 is driven while towing the road of the drainage pavement a, the power of the engine 25 is the hydraulic pressure for the water pump. It is transmitted to the high-pressure water pump 28a via the pump 35 and the high-pressure water pump hydraulic motor 31, and the water in the water tank 24 is sent to the water pipe 4 via the high-pressure water hose 9c by the high-pressure water pump 28a. The high-pressure water is jetted from the jet nozzle 8. The injected high-pressure water passes through the through holes 20 of the connecting plate 19 of the cover 16 and the pavement surface h.
Clogging materials such as earth and sand and dust that have been sprayed onto the surface of the drainage pavement a due to the spraying pressure float on the pavement surface h together with water. The floating mixed water of the clogging material and water is sucked from the suction port 11 of the suction duct 10 and collected in the receiver tank 24 a via the suction hose 14. The suction force is applied to the suction port 11 by the engine 2
The power of No. 5 is transmitted from the vacuum pump hydraulic pump 34 to the vacuum pump 26 via the vacuum pump hydraulic motor 27 to drive the pump 26.

In this embodiment, a suction force is applied to the suction port 11 of the suction duct 10 in the space T to bring the space T into a negative pressure state, and the passage hole of the connecting plate 19 of the cover 16 is provided. By sucking the outside air into the space T from 20, the air flow A is formed along the high pressure water jetted from the jet nozzle 8. As a result, the surrounding air also flows in the same direction along the high-pressure water, and it is possible to suppress the high-pressure water from scattering to the surroundings before the high-pressure water is sprayed on the pavement surface h. . As a result, the high-pressure water can be sprayed onto the pavement surface h while maintaining the impact force, and it is possible to satisfactorily remove clogging materials such as earth and sand and dust that have clogged the voids e of the drainage pavement a. Further, by forming the air flow A, it is possible to suppress the scattering of the mixed water of the clogging material floating on the pavement surface h and the water, and the air forming the air flow A is sucked by the suction port 11 Flow into the suction duct 10 so that a large amount of air is supplied to the suction duct 10 and the wind speed in the suction duct 10 can be increased. As a result, the suction / collection efficiency of the mixed water of the clogging material and water is significantly increased. Can be improved.

The mixed water of the clogging material and water sucked and collected in the receiver tank 24a is filtered from the receiver tank 24a through the filter 28b by the driving of the reclaimed water pump 28, and then supplied to the water tank 24 to be regenerated. Used. The regeneration water pump 28 is driven by the power of the engine 25 being transmitted from the water pump hydraulic pump 35 via the regeneration water pump hydraulic motor 30. The drive of the reclaimed water pump 28 is controlled by the hydraulic control valve 36 according to a detection value of a water level sensor (not shown) provided in the receiver tank 24a or the water tank 24.

In the above embodiment, the air flow is formed along the high-pressure water by sucking the outside air into the space T from the passage hole 20 of the connecting plate 19 of the cover 16, but it is not always limited to this. Need not be provided, for example, instead of the cover 16 or the like, a predetermined number of air injection nozzles (not shown) are provided adjacent to the injection nozzles 8 and the air is injected from the air injection nozzles in parallel with the high pressure water. An air flow may be formed along the high pressure water.

Further, in the above embodiment, the case where the removing device of the present invention is applied to drainage pavement is taken as an example, but the present invention is not necessarily limited to this, and the device of the present invention is also applied to water-permeable pavement. May be.

[0026]

As is apparent from the above description, in the invention of claim 1, it is possible to suppress the pressure water from scattering to the surroundings before the pressure water is sprayed on the pavement surface. Pressured water can be sprayed onto the pavement surface while maintaining the impact force, and as a result, it is possible to effectively remove clogging materials such as earth and sand and dust that are clogged in the voids of the pavement.

Further, since it is possible to suppress the scattering of the mixed water of the clogging material floating on the pavement surface and the water, and to increase the wind speed in the suction duct, the clogging material and the water can be increased. It is possible to obtain an effect that the efficiency of sucking and collecting the mixed water of and can be significantly improved. According to the invention of claim 2, in addition to the invention of claim 1, the effect of being able to easily form an air flow along the pressure water is obtained by using air as the gas.

[Brief description of drawings]

FIG. 1 is a schematic side view of a state where a device for removing clogging of drainage pavement, which is an example of an embodiment of the present invention, is attached to a rear portion of a vehicle.

FIG. 2 is a plan view in which a part of the removing device is cut away.

FIG. 3 is a sectional view taken along line − in FIG. 2;

FIG. 4 is an explanatory diagram for explaining the removing device.

FIG. 5 is a schematic sectional view for explaining drainage pavement.

FIG. 6 is a schematic view for explaining a conventional removing device.

[Explanation of symbols]

 a ... Drainage pavement h ... Pavement surface e ... Void A ... Air flow 8 ... Injection nozzle 10 ... Suction duct 11 ... Suction port 16 ... Cover (air flow forming means) 20 ... Passage hole

Claims (2)

[Claims] 1. A jet nozzle for jetting pressured water toward a pavement surface to lift the clogging matter clogged in the voids of the pavement to the pavement surface by the jetting pressure, and sucking the clogging matter floating on the pavement surface. In a device provided with a suction duct for collecting, a device for removing clogging of pavement, characterized by comprising an air flow forming means for forming a gas flow along with the pressure water jetted from the jet nozzle. 2. The device for removing clogging of a pavement according to claim 1, wherein the gas is air.