JPH0959953A - Elimination device of clogged article on pavement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance suction efficiency of muddy water floating up on the surface of a pavement by laying out a spray position of pressure water injected from an injection nozzle to the pavement surface and providing a gas supply means which supplies gas to a suction opening of a suction duct substantially in an enclosed space and keeps the substantially enclosed space in a positive pressure. 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 form an injection nozzle 8. The injected high pressure water is sprayed to a spray position (S) so that a clogged article, such as earth and sand or dust and dirt, which is filled in a drainage pavement, is floated up with water. A mixture of the floated up clogged article and water is sucked up from a suction opening 11 of a suction duct 10 and sucked up into a receiver tank. It is possible to increase a differential pressure between a negative pressure in the suction duct 10 and the pressure near the suction opening 11 by keeping the substantially enclosed space T in a positive pressure and it is also possible to enhance the efficiency of suction and collection of the mixed water of the clogged article and water.

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, Clogs such as earth and sand or dust clogged in the voids e of the surface layer f due to pressure are floated up on the pavement surface h, and the mixed water (sludge water) of the lifted clogs and water is sucked by driving a vacuum pump (not shown). The suction force is applied to the suction port j of the duct i so that the suction is performed. The suction force is applied to the suction port j by driving the vacuum pump to create a negative pressure in the suction duct i and generating a pressure difference between the suction duct i and the vicinity of the suction port j (atmospheric pressure). Done.

[0005]

By the way, in order to improve the function recovery performance of drainage pavement, it is required to suck and recover sludge water floating on the pavement surface as efficiently as possible. In this case, in such a device,
It is conceivable to increase the negative pressure in the suction duct i by using a large-capacity vacuum pump to increase the pressure difference from the atmospheric pressure and increase the suction capacity of the suction duct i. However, the use of such a large-capacity vacuum pump has a problem that a large-scale suction device is required.

The present invention has been made in order to eliminate such inconvenience, and it is possible to efficiently remove by suction the sludge water floating on the pavement surface without using a large-capacity vacuum pump. The purpose is to provide a device.

[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 a device provided with, by arranging a spraying position of the pressure water jetted from the jetting nozzle to the pavement surface and a suction port of the suction duct in a substantially closed space, and supplying gas to the substantially closed space. It is characterized in that it is provided with a gas supply means for making the substantially closed space a positive pressure.

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

[0009]

According to the invention of claim 1, the position of spraying the pressure water jetted from the jet nozzle onto the pavement surface and the suction port of the suction duct are arranged in a substantially sealed space, and gas is supplied to the substantially sealed space. By making the pressure positive, the difference between the negative pressure in the suction duct and the pressure in the vicinity of the suction port is increased to increase the suction capacity of the suction duct.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, air is used as the gas to simplify the device configuration of the gas supply means.

[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 schematic 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 a lower portion opened. As shown in FIG. 3, the upper plate 4 of the outer box 3 is arranged slightly below the upper end of the outer box 3 and is screwed to both side plates 5a and 5b of the outer box.

A water pipe 6 extends along the longitudinal direction of the outer case 3 (width direction of the track 1) at the upper part of the outer case 3 on the side away from the track 1. The water pipe 6 is fixed to the side plate 5 a of the outer box 3 on the side away from the truck 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 6 at equal intervals in the axial direction of the water pipe 6. 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, the water pipe 6
As shown in FIG. 1, one end of a high-pressure water hose 9c is connected to this, 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 the present 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 the present invention is 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 the side plate 5b side and the 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. On the other hand, on the front side (side plate 5a side) of the tip of the suction duct 10, a guide plate 15 for preventing the high-pressure water from scattering around is attached by screws or the like. The guide plate 15 extends in the longitudinal direction of the outer box 3 so as to cover the high-pressure water spraying position S, and both ends thereof are located in the outer box 3.
Has reached both end plates 5c and 5d. As shown in FIG. 1, one end of a 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 vacuum pump 26 via a receiver tank 24a described later. There is.

As shown in FIGS. 2 and 3, casters 16 and 17 are attached to both side plates 5a and 5b of the outer case 3 so as to be spaced apart from each other in the longitudinal direction of the outer case 3.
A seal rubber 18 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. ,
Thereby, the inside of the outer box 3 is substantially sealed, and the high-pressure water spraying position S and the suction port 11 of the suction duct 10 are arranged in the substantially sealed space T. One end of a supply pipe (gas supply means) 19 for supplying high-pressure air to the substantially closed space T is connected to the upper plate 4 of the outer box 3, and the other end of the supply pipe 19 is a blower (described later). Gas supply means) 20.

As shown in FIG. 4, the loading tank 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. The other end of the suction hose 14 described above is connected to the receiver tank 24a.
A vacuum pump 26 and a vacuum pump hydraulic motor 27 for driving the vacuum pump 26 are attached to the upper part of a. A blower 20 is arranged on the side of the receiver tank 24a, and the other end of the above-mentioned supply pipe 19 is connected to the blower 20.

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.

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 jetted high-pressure water is sprayed at the spraying position S, and due to this spraying pressure, the clogging material such as earth and sand or dust that has clogged in the void e of the drainage pavement a floats on the pavement surface h together with the water. The mixed water of the floating clogging material and the water is the suction port 1 of the suction duct 10.
It is sucked from No. 1 and collected in the receiver tank 24a via the suction hose 14. The power of the engine 25 is applied to the suction port 11 so that the power of the engine 25 is the hydraulic pump 34 for the vacuum pump.
From the vacuum pump 2 via the vacuum pump hydraulic motor 27
6 is transmitted to drive the pump 26.

At this time, the supply pipe 2 is driven by driving the blower 20.
High-pressure air is supplied to the inside of the outer box 3 via 0, whereby the inside of the outer box 3, that is, the substantially closed space T is set to a positive pressure. Then, by setting the substantially closed space T to a positive pressure in this way, compared with the case where the mixed water of the clogging material and the water in the suction duct 10 is suctioned and collected under the atmospheric pressure condition, the negative pressure in the suction duct 10 is reduced. The difference between the pressure and the pressure in the vicinity of the suction port 11 can be increased, and as a result, the suction capacity of the suction duct 10 can be increased and the suction and recovery efficiency of the mixed water of the clogging material and water can be greatly improved. You can

The mixed water of the clogging material and water collected in the receiver tank 24a is supplied to the water tank 24 after being filtered from the receiver tank 24a through the filter 28b by driving the regenerating water pump 28. Be reused. 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 entire space inside the outer box 3 is a positive pressure space, but it is not always necessary to do so, and for example, the high-pressure water spraying position S and the suction duct 1 can be used.
Only the vicinity of the suction port 11 of No. 0 is covered with a cover (not shown), and a passage for high-pressure water sprayed from the spray nozzle 8 is formed in the cover to form a substantially closed space.
A positive pressure space may be formed in a part of the outer box 3 by connecting the above and supplying high-pressure air into the space.

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 removing device of the present invention is also applied to water-permeable pavement. You may.

[0025]

As is apparent from the above description, in the invention of claim 1, the position where the pressure water is sprayed onto the pavement surface and the suction port of the suction duct are arranged in the positive pressure space.
By increasing the difference between the negative pressure in the suction duct and the pressure near the suction port to increase the suction capacity of the suction duct, the sludge water floating on the pavement surface can be efficiently used without using a large capacity vacuum pump. It is possible to obtain the effect of being able to suck and collect well.

According to the invention of claim 2, in addition to the invention of claim 1, by using air as the gas, an effect that the device constitution of the gas supply means can be simplified can be obtained.

[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 schematic 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 S ... Spraying position T ... Substantially closed space 8 ... Injection nozzle 10 ... Suction duct 11 ... Suction port 19 ... Supply pipe (gas supply means) 20 ... Blower (gas supply means)

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 spraying position of pressure water jetted from the jet nozzle onto the pavement surface and a suction port of the suction duct are arranged in a substantially closed space, and a gas is placed in the closed space. A device for removing clogging of a pavement, comprising a gas supply unit for supplying a positive pressure to the substantially closed space by supplying the gas. 2. The device for removing clogging of a pavement according to claim 1, wherein the gas is air.