JP3940797B2 - Clogging detection device for drainage pavement cleaning car - Google Patents

Description

【００１９】
この表１において、周波数が８００Ｈｚの際には、清掃前の状態たる（１）空隙率１５％で乾いている状態では、（騒）音レベル７９．３ｄＢであり、そして清掃後の状態たる（４）空隙率２０％で濡れている状態では（騒）音レベル７７．７ｄＢとなり、１．６ｄＢの減少がみられた。尚、清掃前の状態たる（１）空隙率１５％で乾いている状態では、（騒）音レベル７９．３ｄＢであり、そして空隙率１５％で濡れている状態では（騒）音レベル８０．２ｄＢとなり、０．９ｄＢの増加がみられた。この結果、前側及び後側目詰まり検知手段１５，２５の検知を比較することにより清掃状態を判別できることが判明した。そして、前記清掃状態の判別は、例えば第１，２のスピーカー１８，２７より同一レベルの出力を行った際の第１，２のマイクロホン１９，２８による反射音を捕捉する（騒）音レベルが例えば１．６ｄＢ減少するように自走式車輌１の速度を調節するものである。
【００２０】
以上のように前記実施形態では、自走式車輌１に排水性舗装の目詰まりを除去する水噴射用ノズル６を設けた排水性舗装用清掃車において、前記水噴射用ノズル６の前側及び後側に排水性舗装面の前側及び後側目詰まり検知手段１５，２５を設けると共に、これら前側及び後側目詰まり検知手段１５，２５の出力を比較する判別手段たるコンピュータ３０を設け、自走式車輌１の走行中に前側目詰まり検知手段１５により舗装面８の清掃前の目詰まり状態を検知し、後側目詰まり検知手段２５により舗装面８の清掃後の目詰まり状態を検知し、舗装面８の詰まり状態によって自走式車輌１による清掃速度をリアルタイムに決定できる。
【００２１】
また、前記前側及び後側目詰まり検知手段１５，２５はそれぞれ、前記舗装面８に対向するように設けられた第１及び第２のスピーカー１８，２７及び該第１及び第２のスピーカー１８，２７による舗装面８からの反射音を捕捉する第１及び第２のマイクロホン１９，２８を備え、第１及び第２のスピーカー１８，２７から舗装面８に向けて発せられた音の反射音を第１及び第２のマイクロホン１９，２８により捕捉することで、例えば舗装面８が濡れているとか、舗装面８に凹凸があるとか等にとらわれることなく、連続して目詰まり状態を検知することができる。
【００２２】
さらに、コンピュータ３０の表示部３２が運転席３１或いは助手席に向かって配置されているので、運転者或いは助手席の者が清掃状態を判別表示した表示部３２を視認しながら運転操作することで、正確に清掃車を運転することができる。
【００２３】
尚、本発明は上記実施形態に限定されるものではなく、本発明の要旨の範囲内において、種々の変形実施が可能である。例えば、目詰まり除去手段は、特許文献１のような掃き上げローラブラシ等のようなものでもよい。また、前記ブラケット１０，１６，２６により、箱体９，１７を上下動できるようにしてもよい。
【００２４】
【発明の効果】
請求項１の発明は、車輌に排水性舗装面の目詰まり除去手段を設けた排水性舗装用清掃車において、前記目詰まり除去手段の前側及び後側に排水性舗装面の前側及び後側目詰まり検知手段を設けると共に、これら前側及び後側目詰まり検知手段の出力を比較する判別手段を設け、
前記前側及び後側目詰まり検知手段はそれぞれ、前記車輌の前部及び後部に、下方を開口した箱体を設け、該箱体の前後方向或いは左右方向の一側にスピーカーを設けると共に他側にマイクロホンを設け、このスピーカーとマイクロホンとの間を仕切るように仕切り体が設けられると共に、該仕切り体の下縁は前記箱体の下方開口部の下縁よりやや上方に位置して、箱体の下方開口部を塞いだときに仕切り体の下縁を介して箱体の一側及び他側が連通部を介して連通するように設けられていることを特徴とする排水性舗装用清掃車の目詰まり判別装置であり、舗装面の詰まり状態によって車輌による清掃速度をリアルタイムに決定できるので、排水性舗装面の清掃を著しく向上することができる。
【００２５】
請求項２の発明においては、前記スピーカーと前記マイクロホンは舗装面に対向するように下向きに設けられており、前記判別手段の判別表示部が運転席或いは助手席に向かって配置されていることを特徴とする請求項１記載の排水性舗装用清掃車の目詰まり判別装置であり、目詰まり状態以外の要因、例えば路面が濡れているとか、路面に凹凸があるとか等にとらわれることなく、連続して目詰まり状態を検知することができる。
【図面の簡単な説明】
【図１】 本発明の一実施形態を示す舗装面を断面とした正面図である。
【図２】 本発明の一実施形態を示す要部の斜視図である。
【図３】 本発明の一実施形態を示すブロック図である。
【符号の説明】
１ 自走式車輌
６ 水噴出用ノズル（目詰まり除去手段）
１５ 前側目詰まり検知手段
１７ 箱体
１８ 第１のスピーカー
１９ 第１のマイクロホン
２０ 仕切り体
２１ 下縁
２２ 下方開口部
２３ 連通部
２５ 後側目詰まり検知手段
２７ 第２のスピーカー
２８ 第２のマイクロホン
３０ コンピュータ（判別手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clogging determination device for a drainage pavement cleaning vehicle.
[0002]
[Prior art]
Drainage (water-permeable) pavement is expected to extend in the future due to its functionality, but after in-service due to completion of construction, voids are clogged with sediment and dust, that is, clogging progresses, and the drainage function gradually decreases . Therefore, a drainage pavement cleaning vehicle is used to remove clogging of the drainage pavement surface. This drainage pavement cleaning vehicle is equipped with a water tank and a pump on a self-propelled vehicle, and a water ejection nozzle is provided at the rear of the vehicle toward the pavement surface, and water, earth and sand and dust are located near the water ejection nozzle. A water recovery nozzle is provided, and the water in the water tank is ejected from the water ejection nozzle to the pavement surface through a pump while driving to remove dirt and dust from the eyes (voids) of the pavement surface. The clogging is removed, and water on the pavement surface is further recovered in a water tank via a water recovery nozzle.
[0003]
Further, a road surface cleaning device for a cleaning vehicle is also known which sweeps up and sucks dust floating from the joints of the drainage pavement surface by a sweeping roller brush (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP 2002-227152 A (paragraph number 0004)
[0005]
[Problems to be solved by the invention]
The drainage pavement cleaning vehicle has the following problems. Since the cleaning car moves at about 1 km per hour, the cleaning work speed is slow, and the traffic regulation range accompanying the cleaning becomes long. In addition, in the construction management of cleaning, a water permeability tester is installed at the site before and after cleaning, and the amount of water permeated within a certain time is measured to determine the removal of clogging of drainage pavement. It was. Furthermore, since the clogged state of the pavement surface cannot be grasped during cleaning by traveling of the cleaning vehicle, it must travel at the same speed as the state where the clogged state is large even in places where the clogged state is small. The cleaning efficiency could not be improved.
[0006]
Then, this invention aims at providing the clogging discrimination | determination apparatus of the drainage-pavement cleaning vehicle which can determine a cleaning speed according to the clogging state of a drainage-pavement surface in the drainage-pavement cleaning vehicle.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a drainage pavement cleaning vehicle provided with a drainage pavement clogging removal means on a vehicle, wherein the front and rear eyes of the drainage pavement surface are disposed on the front side and the rear side of the clogging removal means. Provided with a clogging detection means, and provided with a discrimination means for comparing the output of these front and rear clogging detection means,
The front side and rear side clogging detection means are provided with a box opening at the front and rear of the vehicle, respectively, and a speaker is provided on one side of the box in the front-rear direction or the left-right direction and on the other side. A microphone is provided, and a partition body is provided so as to partition the speaker and the microphone. The lower edge of the partition body is located slightly above the lower edge of the lower opening of the box body, The drainage pavement cleaning vehicle characterized in that one side and the other side of the box body are communicated with each other via the communication portion via the lower edge of the partition when the lower opening is closed. It is a clogging determination device.
[0008]
According to this configuration, the clogging state of the pavement surface is detected by the front clogging detection means while the vehicle is running, and the clogged state after cleaning the pavement surface is detected by the rear clogging detection means. The output of the clogged state before and after the cleaning is discriminated by the discriminating means to adjust the vehicle speed.
[0009]
In the invention of claim 2, the speaker and the microphone are provided downward so as to face the pavement surface, and the discrimination display part of the discrimination means is arranged toward the driver seat or the passenger seat. The clogging determination device for a drainage pavement cleaning vehicle according to claim 1, wherein the device is a clogging determination device.
[0010]
According to the configuration of the second aspect, the sound emitted from the speaker toward the pavement surface is more reflected when the clogged state is large than when the clogged state is small, and the reflected sound is captured by the microphone. By doing so, the clogged state can be detected based on the change in the reflectance of the sound.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The self-propelled vehicle 1 is a cab-over type truck, and a water jet pump 3 and a water recovery pump 4 are mounted on the front part of the cargo bed 2, and a water tank 5 is mounted on the rear part of the cargo bed 2. Has been. A cleaning water jet nozzle 6 and a water recovery nozzle 7 are provided below the rear part of the loading platform 2. The water ejection nozzle 6 and the water recovery nozzle 7 are disposed so as to face the pavement surface 8, and the water recovery nozzle 7 is disposed rearward of the water ejection nozzle 6. And the clogging removal means of the drainage pavement surface 8 is formed by the nozzle 6 for water ejection. The water ejection nozzle 6 and the water recovery nozzle 7 are accommodated in a box 9, and the box 9 is a rectangle attached to the back of the loading platform 2 via a bracket 10 and opened downward. The lateral width is almost equal to the vehicle width. The primary side of the water jet pump 3 is connected to the water tank 5 via a pipe 11, and the secondary side of the water jet pump 3 is connected to the water jet nozzle 6 via a pipe 12. Further, the primary side of the water recovery pump 4 is connected to the water recovery nozzle 7 via the pipe 13, and the secondary side of the water recovery pump 4 is connected to the water tank 5 via the pipe 14. Yes.
[0012]
Further, a front clogging detection means 15 is provided at the front portion of the self-propelled vehicle 1. The front clogging detection means 15 is provided with a rectangular box 17 having an opening at the front part of the self-propelled vehicle 1 via a bracket 16, and the box 17 is provided on one side in the front-rear direction or the left-right direction. One speaker 18 is provided to face downward, that is, to face the pavement surface 8, and the first microphone 19 is provided to face the other side, that is, to face the pavement surface 8. A plate-like partition body 20 is provided so as to partition the first speaker 18 and the first microphone 19, and a lower edge 21 of the partition body 20 is formed on the lower opening 22 of the box body 17. One side of the box body 17 via the lower edge 21 of the partition body 20 when the lower opening 22 of the box body 17 is closed, located slightly above the lower edge, a predetermined height L, for example, about 10 cm above The other side communicates with the communication part 23. In the figure, reference numeral 24 denotes a speaker mounting plate.
[0013]
Similarly, rear clogging detection means 25 is provided at the rear part of the self-propelled vehicle. The rear clogging detection means 25 is provided with a rectangular box 17 having an opening at the rear of the self-propelled vehicle 1 through a bracket 26, and a second speaker on one side of the box 17 in the left-right direction. 27 is provided so as to face the pavement surface 8, and a second microphone 28 is provided on the other side so as to face the pavement surface 8. A plate-like partition body 20 is provided so as to partition the second speaker 27 and the second microphone 28, and the lower opening 22 of the box body 17 is closed when the lower opening 22 is closed. One side and the other side of the box body 17 communicate with each other through the communication portion via the edge 21.
[0014]
An amplifier 29 is connected to the first and second speakers 18 and 27 so as to have the same output, while the first and second speakers 18 and 27 capture the reflected sound of the sound emitted from the first and second speakers 18 and 27. The outputs of the two microphones 19 and 28 are connected to a vehicle-mounted computer (personal computer) 30 serving as a discrimination means, and the two states can be compared to determine the cleaning state. The amplifier 29 and the computer 30 are provided on the driver's seat 31 side of the self-propelled vehicle, and a display unit 32 as a discrimination display unit of the computer 30 is arranged toward the driver's seat or the passenger seat.
[0015]
Next, the operation of the above configuration will be described. The drainage pavement 8 is cleaned by running the self-propelled vehicle 1 and operating the water ejection pump 4 to eject water from the water tank 5 from the water ejection nozzle 6 toward the pavement 8. Dust and the like clogged in the surface 8 are removed by blowing off with high-pressure water. At the same time, the water recovery pump 4 is operated to collect the water overflowing on the pavement surface 8 by the water recovery nozzle 7 such as earth and sand or dust and return it to the water tank 5. In this way, the water in the water tank 5 is cleaned by removing clogging while being recycled.
[0016]
During the cleaning accompanying such traveling, the lower opening 22 of the box 17 of each of the front clogging detection means 15 and the rear clogging detection means 25 is moved close to or grounded to the pavement surface 8, Then, the amplifier 29 emits a sound having a predetermined frequency from the first speaker 18 toward the pavement surface 8. This sound is reflected by the pavement surface 8 as indicated by an arrow A, is captured by the first microphone 19 through the communication portion 23, and measures the sound level (dB). At this time, if the clogged state on the pavement surface 8 is large, the sound level of the reflected sound becomes higher than when the clogged state is small. If the clogging is small, the sound is absorbed by the eyes of the pavement surface 8 to reduce the sound level. On the other hand, if the clogging is large, the sound is easily reflected without being absorbed by the eyes of the pavement surface 8. Becomes larger. Similarly, the rear clogging detection means 25 emits a sound having a predetermined frequency toward the pavement surface 8 cleaned from the second speaker 28 by the amplifier 29. This sound is reflected by the pavement surface 8 and is captured by the second microphone 28 through the communication portion 23 to measure the sound level (dB). Then, the output of the sound level captured by the first and second microphones 19 and 28 is input to the computer 30 as the discrimination means and compared. Then, the computer 30 compares the sound levels to measure the cleaning state, and displays the data on the discrimination display unit 32. While watching this display, the self-propelled vehicle 1 is driven at an appropriate speed. To do.
[0017]
Next, test results will be described. Table 1 emits sound with frequencies of 400, 500, 630 to 3150, and 4500 Hz from the speakers, and the pavement surface is (1) in a dry state with a porosity of 15%, and (2) in a dry state with a porosity of 20%. , (3) The (noise) sound level of the reflected sound in a wet state with a porosity of 15%, and (4) a wet state with a porosity of 20%.
[0018]
[Table 1]

[0019]
In Table 1, when the frequency is 800 Hz, (1) in the dry state with a porosity of 15%, the noise level is 79.3 dB, and the state after cleaning is ( 4) In the wet state with a porosity of 20%, the (noise) sound level was 77.7 dB, and a decrease of 1.6 dB was observed. It should be noted that (1) the sound level is 79.3 dB in the dry state with a porosity of 15%, and the (noise) sound level is 80.3 in the state before the cleaning, and wet with the porosity of 15%. It was 2 dB, and an increase of 0.9 dB was observed. As a result, it was found that the cleaning state can be determined by comparing the detections of the front and rear clogging detection means 15 and 25. The cleaning state is determined by, for example, a sound level that captures the reflected sound from the first and second microphones 19 and 28 when the first and second speakers 18 and 27 output the same level. For example, the speed of the self-propelled vehicle 1 is adjusted so as to decrease by 1.6 dB.
[0020]
As described above, in the embodiment, in the drainage pavement cleaning vehicle in which the self-propelled vehicle 1 is provided with the water injection nozzle 6 for removing the clogging of the drainage pavement, the front side and the rear side of the water injection nozzle 6 are provided. The front and rear clogging detection means 15 and 25 of the drainage pavement surface are provided on the side, and the computer 30 is provided as a discrimination means for comparing the outputs of the front and rear clogging detection means 15 and 25, and is self-propelled. While the vehicle 1 is traveling, the front clogging detection means 15 detects a clogged state before the pavement surface 8 is cleaned, and the rear clogging detection means 25 detects a clogged state after the pavement surface 8 is cleaned, The cleaning speed of the self-propelled vehicle 1 can be determined in real time according to the clogged state of the surface 8.
[0021]
Further, the front and rear clogging detecting means 15 and 25 are respectively provided with first and second speakers 18 and 27 and the first and second speakers 18 and 27 provided to face the pavement surface 8, respectively. 27, first and second microphones 19 and 28 for capturing the reflected sound from the pavement surface 8, and the reflected sound of the sound emitted from the first and second speakers 18 and 27 toward the pavement surface 8 By capturing with the first and second microphones 19 and 28, for example, the clogged state is continuously detected without being caught by the pavement surface 8 being wet or the pavement surface 8 being uneven. Can do.
[0022]
Further, since the display unit 32 of the computer 30 is arranged toward the driver's seat 31 or the passenger seat, the driver or the passenger seat operates the driver while visually checking the display unit 32 that displays the cleaning state. You can drive the cleaning car accurately.
[0023]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the clogging removing means may be a sweeping roller brush as in Patent Document 1. Further, the box bodies 9, 17 may be moved up and down by the brackets 10, 16, 26.
[0024]
【The invention's effect】
According to a first aspect of the present invention, there is provided a drainage pavement cleaning vehicle provided with a drainage pavement clogging removal means on a vehicle, wherein the front and rear eyes of the drainage pavement surface are disposed on the front side and the rear side of the clogging removal means. Provided with a clogging detection means, and provided with a discrimination means for comparing the output of these front and rear clogging detection means,
The front side and rear side clogging detection means are provided with a box opening at the front and rear of the vehicle, respectively, and a speaker is provided on one side of the box in the front-rear direction or the left-right direction and on the other side. A microphone is provided, and a partition body is provided so as to partition the speaker and the microphone. The lower edge of the partition body is located slightly above the lower edge of the lower opening of the box body, The drainage pavement cleaning vehicle characterized in that one side and the other side of the box body are communicated with each other via the communication portion via the lower edge of the partition when the lower opening is closed. Since it is a clogging determination device and the cleaning speed by the vehicle can be determined in real time according to the clogged state of the pavement surface, the cleaning of the drainage pavement surface can be remarkably improved.
[0025]
In the invention of claim 2, the speaker and the microphone are provided downward so as to face the pavement surface, and the discrimination display part of the discrimination means is arranged toward the driver seat or the passenger seat. It is a clogging determination device for a drainage pavement cleaning vehicle according to claim 1, characterized in that it is continuous without being caught by factors other than the clogging state, for example, the road surface is wet or the road surface is uneven. Thus, the clogging state can be detected.
[Brief description of the drawings]
FIG. 1 is a front view showing a cross-section of a paved surface showing an embodiment of the present invention.
FIG. 2 is a perspective view of essential parts showing an embodiment of the present invention.
FIG. 3 is a block diagram showing an embodiment of the present invention.
[Explanation of symbols]
1 Self-propelled vehicle 6 Water ejection nozzle (clogging removal means)
15 Front-side clogging detection means 17 Box 18 First speaker 19 First microphone 20 Partition 21 Lower edge 22 Lower opening 23 Communication portion 25 Rear-side clogging detection means 27 Second speaker 28 Second microphone 30 Computer (discrimination means

Claims (2)

In the drainage pavement cleaning vehicle provided with the drainage pavement clogging removing means on the vehicle, the front and rear clogging detection means are provided on the front side and the rear side of the clogging removal means, and A discrimination means for comparing the outputs of the front and rear clogging detection means is provided,
The front side and rear side clogging detection means are provided with a box opening at the front and rear of the vehicle, respectively, and a speaker is provided on one side of the box in the front-rear direction or the left-right direction and on the other side. A microphone is provided, and a partition body is provided so as to partition the speaker and the microphone. The lower edge of the partition body is located slightly above the lower edge of the lower opening of the box body, The drainage pavement cleaning vehicle characterized in that one side and the other side of the box body are communicated with each other via the communication portion via the lower edge of the partition when the lower opening is closed. Clogging determination device. The said speaker and the said microphone are provided downward so as to oppose a pavement surface, The discrimination | determination display part of the said discrimination means is arrange | positioned toward a driver's seat or a passenger seat . Clogging detection device for drainage pavement cleaning vehicles.

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