JP2000234317A - Road garbage truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively suppress generation of dust with side brushes at the time of cleaning with a road garbage truck. SOLUTION: Right and left side brushes are grounded projecting to a working position to seep together dust, which sweeps up with a main brush to collect to a hopper with an elevating paddle. At this time, a dust generating level (a dusty state) with the side brushes changes somewhat depending on aridity of the dust of a road and an amount of the dust. This dust generating level is detected with a sensor 40 arranged on a dust generation region T to judge the dust generation level by three stages in a control unit 51 received the a detecting signal, which controls a first to a third relays R1 to R3 to control watering of a first to a fourth nozzles 22L, 25L, 28 and 32L according to somewhat of the generation of dust.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road cleaning vehicle provided with a watering device.

[0002]

2. Description of the Related Art When cleaning a road surface with a road cleaning vehicle, dust on the road surface is swept toward the center of the vehicle by a side brush, and the dust is collected in a hopper by a main brush or an air suction type pickup head. Like that. Although it depends on the amount of dust, when the dust (road surface) is in a dry state, the dust is soared by the side brush that is exposed to the side from the lower part of the vehicle and rotates, thereby deteriorating the working environment. . Therefore, conventionally, regardless of the amount of dust and the degree of dryness, cleaning work is performed while spraying a relatively large amount of water, or dust is generated (dust generation) so that dust does not occur in any case. While watching the situation, the driver manually switches the valve of the water spray device provided in the road cleaning vehicle from the driver's seat to sprinkle water on the road surface as appropriate.

[0003]

In the above, a large amount of water is sprinkled on the road surface regardless of the degree of dust buildup. Can not do it and often have to supply water. In addition, since the driver controls the amount of watering by manually performing a switch operation while visually observing the driver, there is a possibility that safe driving of the vehicle may be hindered. It is an object of the present invention to provide a road cleaning vehicle capable of controlling a water spray amount for preventing dust generation without imposing a burden on a driver.

[0004]

A road cleaning vehicle according to the present invention includes a side brush for sweeping dust and a water sprinkling device for spraying water on the road to suppress dust generation during road cleaning. In a vehicle, a sensor for detecting a dust generation state by a side brush during road surface cleaning is provided in a dust generation region by a side brush, and a water spray amount on a road surface by a water sprinkler is automatically controlled according to a detection value of the sensor. A control device is provided (claim 1). The sensor is equipped with light emitting and receiving means that emits and receives laser light.The light emitted from the light emitting means is blocked by dust and detects the state of dust generated by the side brush based on the amount of light when it reaches the light receiving means. (Claim 2). The dust generation status is detected in three stages: a first level with almost no dust generation, a second level with a small amount of dust generation, and a third level with a large amount of dust generation. Control is performed in three stages corresponding to the levels (claim 3). More specifically, the water spray device includes a first nozzle near the side brush, a second nozzle that concentrates water on a road surface in front of the vehicle, a third nozzle that sprays water downward at the front of the vehicle, and a front nozzle in front of the side brush. A first nozzle at a first level, first and second nozzles at a second level, and all nozzles at a third level. (Claim 4). The side brush is a side brush used when cleaning a road shoulder (claim 5).

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A road sweeper 1 shown in FIG. 1 is well known for its basic structure. That is, 2 is the driver's seat, 3
R and 3L are a pair of left and right side brushes arranged below the vehicle body 4, 5R and 5L are a pair of left and right auxiliary side brushes arranged behind the side brushes 3R and 3L inside the vehicle width, 6 is a main brush, 7 Is an elevator paddle. Side brush 3R,
3L is supported by the vehicle body 4 by the arm 8 and is in a stowed position that is lifted up from the road surface within the vehicle body width, and is in contact with the road surface,
Moreover, the auxiliary brushes 5R and 5L are moved up and down and swing between a work position S (FIG. 2) exposed laterally from the vehicle width.
It is supported so as to only ascend and descend at a storage position away from the road surface and a work position in contact with the road surface. When the vehicle is traveling on the left side, the shoulder P of the road is the side brush 3L on the left side in the vehicle traveling direction.
Is in charge. The above-mentioned side brushes 3L, 3R are extended to the work position S and grounded, and the side brushes 5R, 5L are lowered,
After being grounded and rotated inward, dust on the road surface is swept toward the center of the vehicle width, and the dust is lifted by the main brush 6 and collected in the hopper 9 by the elevator paddle 7.

A dustproof cover 11 is attached to the left and right side surfaces 10 of the vehicle body 4 in the width direction. The dustproof cover 11 is provided from the front of the side brush 3R (3L) to the side of the auxiliary brush 5R (5L), and the lower end of the side portion 12 of the auxiliary brush 5R (5L) is grounded to the road surface. In relation, it consists of a flexible member, for example a rubber sheet. Dustproof cover 1
1, the front side of the side portion 12, that is, the side brush 3R
A notch 13 is provided in a side portion of (3L), and the side brush 3R (3L) is exposed to the side of the vehicle body 4 from the notch 13. The dust-proof cover 11 reduces the amount of dust generated when the side brush 3R (3L) and the auxiliary side brush 5R (5L) are grounded and rotated and fly outward. In the left side traveling, dust easily accumulates on the shoulder of the road, and more dust is generated than in the right side. Therefore, in the present embodiment, the case where the automatic watering control is applied to the left side brush 3L will be described.

Next, the sprinkler A will be described. The arm 8 is provided with a first nozzle 20L. 1st nozzle 2
0L is a conical watering nozzle 20a for watering the water conically.
And a V-shaped watering nozzle 20b having a V-shaped tip and spraying water in a triangular shape with a narrow width. Water is sprayed from the conical watering nozzle 20a to the outer peripheral portion of the side brush 5L, and water is sprayed from the V-shaped watering nozzle 20b along the circumferential direction of the corresponding side brush 5L. These first
One nozzle 20L includes a first pipe 21 and a first electromagnetic valve 22.
It communicates with the main pipe 23 via L.

[0008] A second nozzle 25L is disposed in the bumper portion 24 at the front of the driver's seat 2. 2nd nozzle 25L
Is a centralized watering nozzle that sprays water in gardens and the like.
The second nozzle 25L is connected to the second pipe 26 and the second electromagnetic valve 2.
It communicates with the main pipe 23 via 7L. From the second nozzle 25L, water is intensively sprinkled toward the front side (road shoulder portion) in the traveling direction of the vehicle.

Below the bumper portion 24, a third nozzle 28 composed of a plurality of conical watering nozzles 20a is attached with the watering port facing downward on the road surface. Each third nozzle 28
One end of the connecting pipe 29 is connected to the connecting pipe 29 via the third pipe 30 and the third electromagnetic valve 31.
Is communicated to.

The notch 13 is provided outside the dustproof cover 12.
A fourth nozzle 32L composed of two V-shaped watering nozzles 20b is provided in the front part of the nozzle with the nozzle facing downward.
The water blown downward from these nozzles 20b forms a triangular shape as shown in FIG. 1, and overlaps on the way to form a kind of water curtain. The fourth nozzle 32L is connected to the main pipe 23 via a fourth pipe 33 and a fourth electromagnetic valve 34L. The main pipe 23 is connected to a watering tank 36 via a pump 35.

When the side brush 3L performs a cleaning operation, the dust inside the dustproof cover 12 becomes a dust generation area T due to the side brush 3L. In the dust generation region T, a sensor 40 for detecting a dust generation state is provided. The sensor 40 is a means for projecting and receiving laser light 4
0a and 40b. Emitting / receiving means 40a, 40
The space between "b" and "b" is a detection area, and when dust falls on the detection area, the dust (dust) impedes the passage of the laser beam emitted from the light means 40a, and corresponds to the amount of dust generated. As a result, the amount of light reaching the light receiving means 40b is changed slightly and often.

Next, the control device 50 will be described. As shown in FIG. 4, the control unit 51 of the control device 50 includes the sensor 4
The amount of light received from the light receiving means 40b of 0 is sent as detection data. The received light amount is processed in the control unit 51 and is classified into a first level with almost no dust, a second level with a small amount of dust, and a third level with a large amount of dust. Is determined. At the first dust generation level, the first relay R1 connected to the control unit 51 is turned on. If it is the second dust generation level, the control unit 5
The first relay R2 connected to the first relay 1 is turned on. At the third dust generation level, the third relay R3 connected to the control unit 51 is turned on.

On the other hand, the normally open contacts of the relays R1 to R3 are connected in parallel to the solenoid of the first electromagnetic valve 22L. The normally open contacts of the relays R2 and R3 are connected in parallel to the solenoid of the second electromagnetic valve 27L. Then, the third and fourth electromagnetic valves 31, 34L
The normally open contact of the relay R3 is connected to the solenoid. 52 is a power supply and 53 is a switch. Regarding the right side brush 3R of the vehicle, the first, second, and fourth nozzles 2 are also provided.
The arrangement of the 0R, 25R, and 32R and the connection to the main pipe 23 are as follows.
Same as the left side described above, but the right side does not perform cleaning of the road shoulder where a large amount of dust is accumulated. Therefore, even if the dust is dry, relatively little dust is generated. In most cases, there is no need to finely control road surface watering. Therefore, no sensor is attached near the brush, and the control of the right electromagnetic valves 22R, 27R, 34R is individually controlled by another switch (not shown). Of course, also on the right side of the vehicle, a sensor is provided in the vicinity of the right side brush 3R, and the right nozzles 20R, 25R, 32R are controlled in the same manner as the respective nozzles corresponding to the left side brush by the dust detection data by the sensor. May be.

The left and right side brushes 3R, 3L are extended to the working position and grounded, and the auxiliary side brushes 5R, 5L are lowered and grounded. And collect it in the hopper 9 with the elevator paddle 7. When appropriate dust is present on the road surface dust (in a normal cleaning state), even if the left side brush 3L for cleaning the road shoulder P on which the dust is accumulated particularly sweeps the dust on the road shoulder P, there is almost no dust. . In this case, in the detection region of the sensor 40, the laser beam is hardly blocked, and the light from the light emitting unit 40a reaches the light receiving unit 40b almost as it is. The light receiving means 40b transmits this signal to the control unit 51, and the control unit 51 receives this signal,
It is determined to be the first dust generation level, and the first relay R1 is turned on. Then, the normally open contact of the first relay R1 is closed, water is sprinkled from the first nozzle 20L, and slight dusting is suppressed.

Next, when the dust on the road surface is slightly insufficient, the side brush 3L sweeps the dust on the road shoulder P to generate a small amount of dust. Then, due to the dust, the amount of laser light reaching the light receiving means 40b of the sensor 40 becomes smaller than that at the first dust generation level. When the detection data is transmitted to the control unit 51, the control unit 51 The level is determined as the second dust generation level, the second relay R2 is turned on, and the normally open contact is closed. Thereby, the first and second electromagnetic valves 22L and 27L are opened, and water is sprayed from the first and second nozzles 20L and 25L. As a result, a small amount of dust is suppressed.

Further, when the dust on the road surface is very dry and the side brush 3L sweeps the dust on the road shoulder P, a large amount of dust is generated. Then, due to the dust,
The amount of laser light reaching the light receiving means 40b of the sensor 40 is further smaller than that at the time of the second dust generation level, and the detection data is transmitted to the control unit 51, and the control unit 51 changes the dust generation level to the third dust generation level. Is determined, the third relay R3 is turned on, and the normally open contact is closed. Thereby, the first, second, third and fourth solenoid valves 22L, 27L, 3L
1, 34L are opened, and the first, second, third, and fourth nozzles 20 are opened.
Water is sprayed from L, 25L, 28, 32L. As a result, a large amount of dust is suppressed. In addition, for watering on the right side because it is not road shoulder cleaning, it is often sufficient to leave only the first nozzle 20R in the watering state in any of the above cases, but if necessary, watering from other nozzles may be sufficient. Good.

In the present embodiment, the sides of the side brushes 3R and 3L are covered with the dustproof cover 12, so that not only the dust is not scattered to the outside but also the dust is prevented.
Because the sensor 40 floats inside the sensor 2, the dust generation state is easily detected by the sensor 40, and more reliable watering control is performed. The control of the watering amount may be performed by automatically adding the variable watering to the watering nozzle and controlling the variable watering, or by performing four-step and five-step watering control instead of the present embodiment. Good.

[0018]

As described above, according to the present invention, the level of dust generation is detected by the sensor, and the amount of water spray is automatically controlled in accordance with the level, so that the driver can pay sufficient attention to the traveling of the vehicle. , Not only safe work, vehicle operation,
Since the amount of watering is controlled to some extent according to the degree of dust generation, the amount of water used can be saved, the water supply interval can be extended, and continuous Cleaning work may be performed.

[Brief description of the drawings]

FIG. 1 is a side view of a road cleaning vehicle.

FIG. 2 is a plan view schematically showing a brush relationship of a road cleaning truck.

FIG. 3 is a piping diagram of a watering device.

FIG. 4 is a diagram showing a control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road surface cleaning car 3L side brush 22L 1st nozzle 25L 2nd nozzle 28 3rd nozzle 32L 4th nozzle 40 Sensor 40a Light emitting means 40b Light receiving means 50 Control device A Watering device T Dust generation area

Claims (5)

[Claims] 1. In a road cleaning vehicle provided with a side brush for sweeping dust and a water spraying device for spraying water on a road surface to suppress generation of dust during road surface cleaning, the state of dust generation by the side brush during road cleaning. A road cleaning truck, comprising: a control device for automatically detecting the amount of water sprayed on a road surface by a water spray device in accordance with a detection value of the sensor, the sensor being provided in a dust generation region by a side brush, for detecting the pressure. 2. The sensor according to claim 1, wherein the sensor includes a projection unit and a light reception unit for projecting and receiving the laser beam. The light emitted from the projection unit is blocked by the dust and the amount of light when the light reaches the light reception unit is determined by a side brush. 2. The method according to claim 1, wherein the dust generation is detected.
The road sweeper described. 3. The dust generation state is detected in three stages: a first level with almost no dust generation, a second level with a small amount of dust generation, and a third level with a large amount of dust generation. The road surface sweeper according to any one of claims 1 to 3, wherein the amount of water is controlled in three stages corresponding to the respective levels. 4. A water spraying device includes: a first nozzle near a side brush; a second nozzle that concentrates water on a road surface in front of the vehicle; a third nozzle that sprays water downward at a front part of the vehicle; A fourth nozzle disposed at a first level, the first nozzle at a second level, and the third nozzle at a second level.
The road cleaning truck according to claim 3, wherein all nozzles are configured to perform a watering operation at the level. 5. The side brush according to claim 1, wherein the side brush is used when cleaning a road shoulder.
Road sweeper according to any of the above.