JP2004324253A - Road sweeper-mounted recovery unit for dust and the like - Google Patents

Road sweeper-mounted recovery unit for dust and the like Download PDF

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JP2004324253A
JP2004324253A JP2003121228A JP2003121228A JP2004324253A JP 2004324253 A JP2004324253 A JP 2004324253A JP 2003121228 A JP2003121228 A JP 2003121228A JP 2003121228 A JP2003121228 A JP 2003121228A JP 2004324253 A JP2004324253 A JP 2004324253A
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Prior art keywords
angle
road surface
pickup head
nozzle
suction duct
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JP2003121228A
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Japanese (ja)
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JP4147582B2 (en
Inventor
Yasushi Kawamoto
靖 川本
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Howa Machinery Ltd
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Howa Machinery Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To uniformalize a cleaning effect of a pickup head in the range of its overall width. <P>SOLUTION: In the pickup head 2 almost throughout the width of a vehicle, an air blowoff nozzle 20 throughout its length is formed between a partition plate 13 and left and right wind direction plates 23 and 24. A suction duct 22 is coupled to one longitudinal end of the pickup head 2. An angle of the nozzle 20 with respect to a road surface R is set at an angle θ1 in the predetermined range, near the suction duct 22, of the nozzle 20, and set at an angle θ2 in a range except the predetermined range. The angles θ1 and θ2 satisfy the expression: θ1>θ2. The angle θ1 of the nozzle 20 with respect to the road surface in the predetermined range is increased, and an airflow is hardly sucked into the suction duct 22, so that the same degree of the cleaning effect can be brought about in the prescribed range and the range except it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、ピックアップヘッドの略全長に亘る空気吹出しノズルからブロアからの還流空気流を吹出し、路面上の塵埃を回収する路面清掃車の塵埃等の回収装置に関する。
【0002】
【従来の技術】
還流式路面清掃車のピックアップヘッドでは、従来、ブロアから圧送ダクトを介して供給された空気流をピックアップヘッドの全長に亘って路面に対する角度が一定の空気吹出しノズル(オリフィス口)から吹出して、路面上の塵埃を舞い上がらせてピックアップヘッドの一端の吸引ダクトからホッパに吸引回収している。このようなものとして特許文献1に開示のものがある。ピックアップヘッドは、長手方向の一端側に圧送ダクトが連通され、他端側に吸引ダクトが連通されており、長手方向全幅に亘って連続する吹出し口(空気吹出しノズル)から空気流を噴出するようになっている。その吹出し口は、路面に対する角度が全長に亘って一定であるが、開口幅を圧送ダクト側を狭く吸引ダクト側を広くして、ごみ量の多くなる吸引ダクト側での吸引能力を高くしている。
【0003】
また、ピックアップヘッド全長に亘って空気吹出しノズルが設けられているものではないが、空気吹出しノズルの路面に対する角度が一定でないものとして、特許文献2に開示のものがある。このものでは、空気吹出しノズルが車両幅方向に多数配列されており、それらの空気吹出しノズルは、路面に向けて鉛直のものと所定角度をつけたものとが幅方向に所定間隔をあけて交互に配置してある。そして、これらの空気吹出しノズルとほぼ前後に対向して特許文献2の図2のように車両幅幅方向に吸入ガイド(吸引ダクト)が配置されている。
【0004】
また、特許文献3では透水性舗装のための清掃装置が開示されており、透水性舗装面に向けて水を噴射するノズルの角度を車両の移動速度で変化するようにしたものが開示されている。特許文献4も透水性舗装のための清掃装置(ピックアップヘッド)であり、清掃装置は、その全長に亘るノズルが回動可能に設けられており、ノズルはほぼ長手全長に及ぶスリット状の空気噴射口が形成されている。このノズルは、清掃速度により舗装面に対する空気噴射角度が変更されるようになっている。また、ピックアップヘッドは、車両幅方向中心の両側に対称に2個づつ吹出しダクトと吸引ダクトとが設けられている。
【0005】
また、特許文献5では、ピックアップヘッドの全幅に亘る吹出し口(空気吹出しノズル)を複数の区間に分割し、吹出し口の各区間に対応して吹出し口の開度を調整する開度調整部材を設けて空気流調整機構を構成している。ピックアップヘッドは、左側に吸引ダクトを備え、吹出し口の吸引ダクト側の区間に空気流調整機構を設けて、開度調整部材(揺動板)が揺動することで前後方向の開口量を調整可能として塵埃量や道路状況に応じた清掃作業を行えるようになっており(特許文献5の図2を参照)、開度調整部材は吹出し口の絞りとして作用している。特に、路肩側に塵埃が集中する場合には、路肩側と反対側の吹出し口を閉じて路肩側の吹出し口を全開にして風量の増加した空気流を噴出させる。
【0006】
【特許文献1】
実用新案登録第2506993号公報
【特許文献2】
特開平7−247523号公報
【特許文献3】
特開平10−88540号公報
【特許文献4】
特願2002−123534号公報
【特許文献5】
特開平5−321220号公報
【0007】
【発明が解決しようとする課題】
前記従来の技術に記載の還流式路面清掃車のピックアップヘッドにおいて、その全長に亘って路面に対する角度が一定の空気吹出しノズルから空気を吹出して、ピックアップヘッド一端の吸引ダクトから塵埃を吸引するものでは、吸引ダクトに近い空気吹出しノズル部分から吹出された吹出し気流の一部が路面に有効に作用する前に吸引ダクトに吸い込まれ、ピックアップヘッドの長手方向で清掃効果にムラが発生すると共に清掃効率が低下している。特許文献1のものでは、吹出し口の吸引ダクト側の開口幅を広くして吹出し気流量を多くすることで清掃効果の向上を図っている。しかしながら、ピックアップヘッドの吹出し口の路面に対する角度は全長で一定であるので、吸引ダクト側の吹出し気流の一部は上記のように吸引ダクトによって吸われるために清掃効率が低下する問題がある。
【0008】
特許文献2は、車両幅方向に配列した複数の吹出しノズルに対向して吸引ダクトを配置したものであり、吸引ダクトが車両幅方向の一方に偏った配置となっているものではない。また、特許文献3のものでは、透水性舗装面に向けて水を噴射するノズルの角度を車両の移動速度により変化するようにした清掃装置が開示されているに過ぎず、空気還流式路面清掃車のピックアップヘッドではない。特許文献4も透水性舗装のための清掃装置であり、ピックアップヘッド全長に亘る空気噴射口が形成されたノズルの空気噴射角度が、清掃速度により舗装面に対して可変としたもので全長では一定であり、また、吸引ダクトが車両幅方向一方に偏った配置となっているものではない。
【0009】
特許文献5では、吹出し口の吸引ダクト側の範囲に空気流調整機構を設け、その開度調整部材の揺動で吹出し口の開口量を清掃状況に応じて増加または絞り込むため、吹出し口の吸引ダクト側の範囲とそれ以外の範囲では、路面に対する吹出し口からの空気流の吹出す角度が異なるものであるが、吹出し口の全長に亘り均一な清掃効果を生じることを目的としているものではない。
本願の課題は、吸引ダクトに近い所定の範囲でオリフィス口からの吹出し気流の一部を吸引ダクトに吸い込まれ難くすることで清掃効率を向上し、路面に対してピックアップヘッド全幅で略均一な清掃効果を生じる路面清掃車の塵埃等の回収装置を提供することである。
【0010】
【課題を解決するための手段】
前記課題解決のため本願発明では、車両の略全幅に亘るピックアップヘッド内を仕切り板で上側の圧空室と下側のサクション室とに仕切り、仕切り板と風向板との間にピックアップヘッドの全長に亘って空気吹出しノズルを形成し、圧空室にはブロアからの空気流を供給する圧送ダクトを連通し、ブロアの吸引側に連通する吸引ダクトをピックアップヘッドの長手一端部において前記サクション室に連通して成る塵埃等の回収装置において、前記空気吹出しノズルの路面に対する角度を、空気吹出しノズルの全長の内、前記吸引ダクトに近い所定の範囲においては角度θ1とし、それ以外の範囲では角度θ2とし、角度θ1>角度θ2としたことを特徴とする(請求項1)。これによれば、吸引ダクトに近い所定範囲の空気吹出しノズルの角度θ1をより垂直に近い角度として、角度θ1としたノズル部分からの吹出空気流が路面に作用する点と吸引ダクトの吸引開口との距離が、角度θ2で吹出す場合よりも離れるので、吸引ダクトに近い所定の範囲の吹出しノズルからの空気流が吸引ダクトに吸い込まれにくくなり、空気流が路面に有効に作用するので、清掃効率が向上する。
【0011】
前記角度θ1で吹出す前記所定の範囲での路面清掃状態と、角度θ2で吹出す前記それ以外の範囲での路面清掃状態とが、略同程度となるように角度θ1、θ2、及び前記所定の範囲が設定されていることを特徴とする(請求項2)。このようにピックアップヘッドの全長で路面清掃状態を略同程度となるようにしたので、ピックアップヘッドの全長方向で清掃効果にムラが無くなる。
【0012】
前記所定の範囲は、ノズル全長の30〜40%であることを特徴とする(請求項3)。塵埃は路肩側に多く、清掃効率を上げるために一般に吸引ノズルをピックアップヘッドの路肩側から30〜40%内に設けているので、これに対応して所定の範囲を30〜40%とすれば、吸引ノズルによる空気流の吸い込みを防止するのに効果的である。
【0013】
【発明の実施の形態】
本願発明の実施の形態について図1〜図7に基づいて説明する。図1において、路面清掃車1の塵埃等の回収装置であるピックアップヘッド2は、車両3の前後の車輪4,5間に配置されている。ピックアップヘッド2は、図2に示す路面Rに対して接地する接地位置と、図示しない路面Rから離間する格納位置との間で昇降可能に懸吊されている。尚、6は側ブラシ(ガッタブルーム)であり、清掃車1の中心に向けて塵埃を掃き込む。
【0014】
ピックアップヘッド2は、車両3の略全幅に亘る全長を有している。ピックアップヘッド2のフード本体7は、左右の側板8,9に、図2に示す前後を屈曲形成して前板10と後板11とした断面形状がコ字形状の天板12を溶着し、前板10の下端に左右の側板8,9間に亘る後方に向けて斜め下方に屈曲した仕切り板13を設けて構成されている。仕切り板13は、ピックアップヘッド2内を上側の圧空室14と下側のサクション室15とに仕切っている。上側の圧空室14は、仕切り板13と左右の側板8,9と天板12とに囲まれて形成されており、サクション室15は、仕切り板13と左右のダートシュー16とゴム製のフロントフラップ17とリヤフラップ18とに囲まれて形成されている。ダートシュー16は清掃時に路面Rに接触して移動するように左右の側壁8,9の車両幅方向外側に夫々取付けられ、フロントフラップ17は仕切り板13の前部下側に取付けられ、リヤフラップ18は後板11と後述の風向板取付体19の後側に夫々取り付けられており、後述の空気吹出しノズル(オリフィス口)20から吹出した空気流が前後、左右方向から漏れないようになっている。
【0015】
天板12の車両幅方向で路肩寄り(本願実施の形態では清掃車の左側)となる上面には、一端が図示しないブロアに接続され空気流を供給する圧送ダクト21の他端が溶着されて圧空室14に連通している。また、圧送ダクト21に近接して圧送ダクト21より左側(路肩寄り)には、一端が図示しないホッパを介してブロアの吸引側に連通する吸引ダクト22の他端が天板12を貫通して仕切り板13に溶着されており、サクション室15に連通している。吸引ダクト22は、図1に示すように、ピックアップヘッド2全長の左側から40%以内の位置に接続されている。
【0016】
風向板取付体19は、仕切り板13の後方で左右の側板8,9間に亘って横架されており、風向板取付体19の全長には、路面Rに対する角度が異なるように左右の風向板23,24が固着されており、図2に示すように、左右の風向板23,24と仕切り板13の後端部13aとの間でピックアップヘッド2の略全長に亘る空気吹出しノズル(オリフィス口)20を形成している。風向板取付体19は、図3に示すように、左右の側プレート25,26間に、吸引ダクト22の位置と対応して左側から30〜40%の所定の位置に中間プレート27を介装し、左右の側プレート25,26と中間プレート27間に亘って、図2、図5、図6に示すように、後板11に連なる左右の後プレート28,29と、左右の上プレート30,31と、左右上プレート30,31の先端から前方に向けて下がるように傾斜し後プレート28,29に向けて後方に屈曲形成された略鉤形状の左右の下プレート32,33を夫々設けて構成されている。この風向板取付体19の左右上プレート30,31と後板11との間には全長に亘り図示しないガスケットが嵌入されている。また、図5に示すように、風向板取付体19の左の下プレート32の傾斜面35は路面Rに対して角度θ1に設定されており、図6に示すように、右の下プレート33の傾斜面36は路面Rに対して角度θ2に設定されており、角度θ1>角度θ2となっている。
【0017】
図3〜図6に示すように、左風向板23は風向板取付体19の左の側プレート25と中間プレート27間に亘って左下プレート32の傾斜面35上に設けられており、右風向板24は右の側プレート26と中間プレート27間に亘って右下プレート33の傾斜面36上に設けられている。これにより、空気吹出しノズル20は、空気吹出しノズル20の全長の内、吸引ダクト22に近い左側から30〜40%の所定の範囲L1では角度θ1で路面Rに向けて指向し、それ以外の右側の範囲L2では角度θ2で路面Rに向けて指向することとなる。図4に示すように、左右の風向板23,24の下端位置は車両幅方向で真っ直ぐであり、従って、左右の風向板23,24と仕切り板13の後端部13aとの間で形成されている空気吹出しノズル20の開口幅は一定であるが、吸引ダクトに近づくにつれて広くしても良い。この所定の範囲及び角度θ1は、所定の範囲L1で空気吹出しノズル20から角度θ1で空気流を吹出して路面Rを清掃した状態が、それ以外の範囲L2で空気吹出しノズル20から角度θ2で空気流を吹出して、路面Rを清掃した状態と略同程度となるように設定されている。角度θ2は、従来から採用されている路面Rに対する角度である。
【0018】
次に作用について説明する。ピックアップヘッド2を接地位置として側ブラシ6を回転し、空気吹出しノズル20全長から空気流を路面Rに向けて吹出す。側ブラシ6によって掃き寄せられた路面R上の塵埃は空気流によって吹き上げられ、その塵埃が吸引ダクト22によって吸引されて回収ホッパに回収される。このとき、吸引ダクト22に近い所定の範囲L1で角度θ1で空気吹出しノズル20から吹出された空気流は、路面Rに対して大きな角度(より垂直に近い角度)で吹きつけられるので、角度θ1としたノズル部分からの吹出空気流が路面Rに作用する点と吸引ダクト22の吸引開口との距離L3が{図7の(a)}、角度θ2で吹出す場合の吸引ダクト22の吸引開口との距離L4よりも離れ{図7の(b)}、吸引ダクト22にその空気流の一部が吸込まれにくく、路面Rに作用する空気流の流量が減ることなく、空気流が路面Rに有効に作用して路面R上の塵埃を吹き上げる。また、吸引ダクト22から離れたそれ以外の範囲L2では、空気流は角度θ1よりゆるやかな角度θ2で空気吹出しノズル20から吹出されるが、その空気流は、吸引ダクト22から離れているので、吸引ダクト22の吸い込みの影響を受けることなく路面R上の塵埃を効果的に吹き上げる。所定の範囲L1において角度θ1で吹出す空気流による路面清掃状態は、それ以外の範囲L2の角度θ2で吹出す空気流による路面清掃状態と略同程度となるようにしてあるので、ピックアップヘッド2全長で清掃ムラの発生が抑制され、均一な清掃効果を生じる。出願人によれば、角度θ1=65°、角度θ2=53°で最良の結果が得られた。
【0019】
【発明の効果】
以上のように本願発明によれば、ピックアップヘッドの略全長に亘って仕切り板と風向板との間に空気吹出しノズルを形成し、空気吹出しノズルの路面に対する角度を、空気吹出しノズルの内、吸引ダクトに近い所定の範囲では角度θ1とし、それ以外の範囲では角度θ2とし、角度θ1>角度θ2としたので、路面に対してより垂直に近い角度で空気流が吹出す所定の範囲では空気吹出しノズルからの空気流が吸引ダクトの開口から吸込まれにくくなり、角度θ1で吹出される空気流が路面に効果的に作用するので清掃効率が向上する。また、角度θ1で吹出す所定の範囲での路面清掃状態と、角度θ2で吹出すそれ以外の範囲での路面清掃状態とが、略同程度となるように角度θ1、θ2、及び所定の範囲を設定したので、ピックアップヘッドの全長方向で清掃効果にムラが無くなる。前記所定の範囲をノズル全長の30〜40%に設定したものでは、所定の範囲がピックアップヘッドに接続される吸引ノズルの接続位置と対応し、この所定の範囲において、吸引ノズルによる吹出しノズルから吹出した空気流の吸込みの防止に効果的である。
【図面の簡単な説明】
【図1】本発明の塵埃等の回収装置を備えた路面清掃車の概略を示す平面図である。
【図2】図1のII−II線断面図である。
【図3】図2のIII視図である。
【図4】図3のIV−IV線断面図である。
【図5】所定の範囲での吹出しノズルを示す説明図である。
【図6】それ以外の範囲での吹出しノズルを示す説明図である。
【図7】角度θ1での吹出空気流及び角度θ2での吹出空気流と吸引ダクトとの関係を示す説明図である。
【符号の説明】
1 路面清掃車
2 ピックアップヘッド
3 車両
13 仕切り板
14 圧空室
15 サクション室
20 空気吹出しノズル
21 圧送ダクト
22 吸引ダクト
23,24 風向板
L1 所定の範囲
L2 それ以外の範囲
R 路面
θ1 所定の範囲での角度
θ2 それ以外の範囲での角度
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collection device for a road cleaning vehicle that blows out a return airflow from a blower from an air blowing nozzle over substantially the entire length of a pickup head and collects dust on a road surface.
[0002]
[Prior art]
Conventionally, in a pickup head of a recirculation-type road cleaning vehicle, an air flow supplied from a blower via a pressure feeding duct is blown out from an air blowing nozzle (orifice port) having a constant angle with respect to a road surface over the entire length of the pickup head, thereby obtaining a road surface. The dust is soared and sucked and collected from the suction duct at one end of the pickup head to the hopper. Such a device is disclosed in Patent Document 1. In the pickup head, a pressure feeding duct is communicated with one end in the longitudinal direction, and a suction duct is communicated with the other end, so that an air flow is blown out from a continuous outlet (air blowing nozzle) over the entire width in the longitudinal direction. It has become. The angle of the outlet with respect to the road surface is constant over the entire length, but the opening width is narrower on the pressure feeding duct side and the suction duct side is widened to increase the suction capacity on the suction duct side where the amount of waste increases. I have.
[0003]
In addition, although the air blowing nozzle is not provided over the entire length of the pickup head, Japanese Patent Application Laid-Open No. H11-163873 discloses that the angle of the air blowing nozzle with respect to the road surface is not constant. In this device, a large number of air blowing nozzles are arranged in the vehicle width direction, and the air blowing nozzles are alternately arranged vertically and directed at a predetermined angle in the width direction with respect to a road surface. It is located in. A suction guide (suction duct) is arranged in the vehicle width direction so as to substantially face the air blowing nozzles as shown in FIG.
[0004]
Patent Document 3 discloses a cleaning device for permeable pavement, in which the angle of a nozzle that injects water toward a permeable pavement surface is changed according to the moving speed of the vehicle. I have. Patent Document 4 is also a cleaning device (pickup head) for permeable pavement, and the cleaning device is provided with a rotatable nozzle over its entire length, and the nozzle is a slit-shaped air jet that extends over substantially the entire longitudinal length. The mouth is formed. In this nozzle, the air injection angle with respect to the pavement surface is changed according to the cleaning speed. The pickup head is provided with two outlet ducts and two suction ducts symmetrically on both sides of the center in the vehicle width direction.
[0005]
Further, in Patent Document 5, an opening degree adjusting member that divides an outlet (air outlet nozzle) over the entire width of the pickup head into a plurality of sections and adjusts the opening degree of the outlet corresponding to each section of the outlet. It constitutes an airflow adjusting mechanism. The pickup head has a suction duct on the left side and an airflow adjustment mechanism in the section of the outlet on the suction duct side. The opening adjustment member (swing plate) swings to adjust the opening amount in the front-rear direction. It is possible to perform a cleaning operation according to the amount of dust and road conditions as possible (see FIG. 2 of Patent Document 5), and the opening adjustment member acts as a throttle of the outlet. In particular, when dust concentrates on the road shoulder side, the air outlet with the increased air volume is ejected by closing the air outlet on the side opposite to the road shoulder side and fully opening the air outlet on the road shoulder side.
[0006]
[Patent Document 1]
Japanese Utility Model Registration No. 2506993 [Patent Document 2]
JP-A-7-247523 [Patent Document 3]
JP-A-10-88540 [Patent Document 4]
Japanese Patent Application No. 2002-123534 [Patent Document 5]
JP-A-5-321220
[Problems to be solved by the invention]
In the pickup head of the recirculation-type road cleaning vehicle described in the related art, air is blown out from an air blowing nozzle having a constant angle with respect to the road surface over its entire length, and dust is sucked from a suction duct at one end of the pickup head. Part of the airflow blown out from the air blowing nozzle near the suction duct is sucked into the suction duct before effectively acting on the road surface, causing unevenness in the cleaning effect in the longitudinal direction of the pickup head and cleaning efficiency. Is declining. In the device disclosed in Patent Document 1, the cleaning effect is improved by widening the opening width of the outlet on the suction duct side to increase the flow rate of the blown air. However, since the angle of the outlet of the pickup head with respect to the road surface is constant over the entire length, a part of the airflow on the suction duct side is sucked by the suction duct as described above, so that there is a problem that the cleaning efficiency is reduced.
[0008]
In Patent Literature 2, a suction duct is arranged to face a plurality of blowing nozzles arranged in the vehicle width direction, and the suction duct is not arranged to be biased to one side in the vehicle width direction. Patent Document 3 only discloses a cleaning device in which the angle of a nozzle that injects water toward a permeable pavement surface is changed according to the moving speed of a vehicle. Not a car pickup head. Patent Document 4 also discloses a cleaning device for permeable pavement, in which the air injection angle of a nozzle having an air injection port formed over the entire length of the pickup head is made variable with respect to the pavement surface by the cleaning speed, and is constant over the entire length. In addition, the suction duct is not arranged in one direction in the vehicle width direction.
[0009]
In Patent Literature 5, an air flow adjusting mechanism is provided in a range on the suction duct side of the outlet, and the opening amount of the outlet is increased or narrowed according to the cleaning condition by swinging the opening degree adjusting member. In the range on the duct side and the other range, the angle at which the airflow blows from the outlet to the road surface is different, but it is not intended to produce a uniform cleaning effect over the entire length of the outlet. .
The problem to be solved by the present application is to improve the cleaning efficiency by making it difficult for a part of the airflow blown out from the orifice port to be sucked into the suction duct in a predetermined range close to the suction duct, and to achieve substantially uniform cleaning of the road surface over the entire width of the pickup head. It is an object of the present invention to provide a device for collecting dust and the like of a road cleaning vehicle that produces an effect.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, the inside of the pickup head over substantially the entire width of the vehicle is partitioned into an upper compressed air chamber and a lower suction chamber by a partition plate, and the entire length of the pickup head is set between the partition plate and the wind direction plate. An air blowing nozzle is formed over the air passage, and a compressed air duct communicates with a pressure feeding duct for supplying air flow from a blower, and a suction duct communicating with a suction side of the blower communicates with the suction chamber at one longitudinal end of the pickup head. In the dust and the like collecting device, the angle of the air blowing nozzle with respect to the road surface is set to an angle θ1 in a predetermined range near the suction duct of the entire length of the air blowing nozzle, and set to an angle θ2 in other ranges. The angle θ1 is larger than the angle θ2 (claim 1). According to this, the angle θ1 of the air blowing nozzle in a predetermined range close to the suction duct is set to an angle closer to vertical, and the point at which the blown air flow from the nozzle portion having the angle θ1 acts on the road surface and the suction opening of the suction duct. Is longer than in the case of blowing at the angle θ2, so that the airflow from the blowout nozzle in a predetermined range near the suction duct becomes difficult to be sucked into the suction duct, and the airflow effectively acts on the road surface. Efficiency is improved.
[0011]
The angles θ1, θ2 and the predetermined value are set such that the road surface cleaning state in the predetermined range blown at the angle θ1 and the road surface cleaning state in the other range blown at the angle θ2 are substantially the same. Is set (claim 2). As described above, since the road surface cleaning state is made substantially the same over the entire length of the pickup head, there is no unevenness in the cleaning effect in the entire length direction of the pickup head.
[0012]
The predetermined range is 30 to 40% of the entire length of the nozzle (claim 3). Dust is abundant on the road shoulder side, and the suction nozzle is generally provided within 30 to 40% from the road shoulder side of the pickup head in order to improve the cleaning efficiency. This is effective in preventing the suction nozzle from sucking the airflow.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, a pickup head 2, which is a device for collecting dust and the like of a road cleaning vehicle 1, is disposed between wheels 4 and 5 on the front and rear of the vehicle 3. The pickup head 2 is suspended so as to be able to ascend and descend between a contact position where the pickup head 2 contacts the road surface R shown in FIG. 2 and a storage position which is separated from the road surface R (not shown). A side brush (gutter room) 6 sweeps dust toward the center of the cleaning car 1.
[0014]
The pickup head 2 has an overall length that covers substantially the entire width of the vehicle 3. The hood main body 7 of the pickup head 2 is formed by welding a left and right side plates 8 and 9 with a front plate 10 and a rear plate 11 formed by bending the front and rear shown in FIG. The lower end of the front plate 10 is provided with a partition plate 13 which is bent obliquely downward toward the rear between the left and right side plates 8 and 9. The partition plate 13 partitions the inside of the pickup head 2 into an upper compressed air chamber 14 and a lower suction chamber 15. The upper compressed air chamber 14 is formed by being surrounded by a partition plate 13, left and right side plates 8, 9 and a top plate 12, and the suction chamber 15 is formed by a partition plate 13, left and right dirt shoes 16, and a rubber front. It is formed so as to be surrounded by the flap 17 and the rear flap 18. The dirt shoe 16 is attached to the left and right side walls 8 and 9 on the outer side in the vehicle width direction so as to move in contact with the road surface R during cleaning. The front flap 17 is attached to the front lower side of the partition plate 13 and the rear flap 18 Are mounted on the rear side of the rear plate 11 and the rear side of a wind direction plate mounting body 19, which will be described later, so that an air flow blown from an air blowing nozzle (orifice port) 20, which will be described later, does not leak in the front, rear, left and right directions. .
[0015]
The other end of a pressure feeding duct 21 that is connected to a blower (not shown) and that supplies an air flow is welded to the upper surface of the top plate 12 that is closer to the road shoulder in the vehicle width direction (the left side of the cleaning car in the present embodiment). It communicates with the compressed air chamber 14. Further, on the left side (close to the road shoulder) of the pressure feeding duct 21 close to the pressure feeding duct 21, the other end of the suction duct 22 having one end communicating with the suction side of the blower via a hopper (not shown) passes through the top plate 12. It is welded to the partition plate 13 and communicates with the suction chamber 15. The suction duct 22 is connected to a position within 40% from the left side of the entire length of the pickup head 2 as shown in FIG.
[0016]
The wind direction plate mounting body 19 is laid across the left and right side plates 8 and 9 behind the partition plate 13, and the entire length of the wind direction plate mounting body 19 has the left and right wind directions so that the angle with respect to the road surface R is different. Plates 23 and 24 are fixed to each other, and as shown in FIG. 2, an air blowing nozzle (orifice orifice) extends over substantially the entire length of the pickup head 2 between the left and right wind direction plates 23 and 24 and the rear end 13a of the partition plate 13. Mouth) 20 is formed. As shown in FIG. 3, the wind direction plate mounting body 19 has an intermediate plate 27 interposed between left and right side plates 25 and 26 at a predetermined position of 30 to 40% from the left corresponding to the position of the suction duct 22. 2, 5, and 6, between the left and right side plates 25, 26 and the intermediate plate 27, the left and right rear plates 28, 29 connected to the rear plate 11, and the left and right upper plates 30. , 31 and right and left lower plates 32, 33 each having a generally hook shape and inclined so as to descend forward from the ends of the upper left and right plates 30, 31 and bent rearward toward the rear plates 28, 29, respectively. It is configured. A gasket (not shown) is fitted over the entire length between the left and right upper plates 30 and 31 of the wind direction plate mounting body 19 and the rear plate 11. Further, as shown in FIG. 5, the inclined surface 35 of the left lower plate 32 of the wind direction mounting plate 19 is set at an angle θ1 with respect to the road surface R, and as shown in FIG. Is set at an angle θ2 with respect to the road surface R, and the angle θ1> the angle θ2.
[0017]
As shown in FIGS. 3 to 6, the left wind direction plate 23 is provided on the inclined surface 35 of the lower left plate 32 between the left side plate 25 and the intermediate plate 27 of the wind direction plate mounting body 19, and the right wind direction is provided. The plate 24 is provided on the inclined surface 36 of the lower right plate 33 between the right side plate 26 and the intermediate plate 27. Accordingly, the air blowing nozzle 20 is directed toward the road surface R at an angle θ1 in a predetermined range L1 of 30 to 40% from the left side close to the suction duct 22 in the entire length of the air blowing nozzle 20, and the other right side. Is directed toward the road surface R at an angle θ2 in the range L2. As shown in FIG. 4, the lower end positions of the left and right wind direction plates 23 and 24 are straight in the vehicle width direction, and are thus formed between the left and right wind direction plates 23 and 24 and the rear end 13 a of the partition plate 13. The opening width of the air blowing nozzle 20 is constant, but may be widened as approaching the suction duct. The predetermined range and the angle θ1 are such that the airflow is blown from the air blowing nozzle 20 at the angle θ1 to clean the road surface R in the predetermined range L1, and the air is blown from the air blowing nozzle 20 at the angle θ2 in the other range L2. The flow is blown out, and is set to be substantially the same as the state where the road surface R is cleaned. The angle θ2 is an angle with respect to the road surface R which has been conventionally used.
[0018]
Next, the operation will be described. The side brush 6 is rotated with the pickup head 2 as the ground position, and an air flow is blown out toward the road surface R from the entire length of the air blowing nozzle 20. The dust on the road surface R swept by the side brush 6 is blown up by the airflow, and the dust is sucked by the suction duct 22 and collected by the collection hopper. At this time, the airflow blown from the air blowing nozzle 20 at the angle θ1 in the predetermined range L1 close to the suction duct 22 is blown at a large angle (closer to the vertical) with respect to the road surface R. The suction opening of the suction duct 22 when the distance L3 between the point at which the blown air flow from the nozzle portion acts on the road surface R and the suction opening of the suction duct 22 is {(a) in FIG. 7 (b) in FIG. 7, it is difficult for a part of the air flow to be sucked into the suction duct 22, and the air flow acting on the road surface R is not reduced, and the air flow is reduced to the road surface R. And blows up dust on the road surface R. Further, in the other range L2 apart from the suction duct 22, the air flow is blown out from the air blowing nozzle 20 at an angle θ2 that is gentler than the angle θ1, but since the air flow is separated from the suction duct 22, The dust on the road surface R is effectively blown up without being affected by the suction of the suction duct 22. Since the road surface cleaning state by the airflow blown at the angle θ1 in the predetermined range L1 is approximately the same as the road surface cleaning state by the airflow blown at the angle θ2 in the other range L2, the pickup head 2 The occurrence of uneven cleaning is suppressed over the entire length, and a uniform cleaning effect is produced. According to the applicant, the best results were obtained with an angle θ1 = 65 ° and an angle θ2 = 53 °.
[0019]
【The invention's effect】
As described above, according to the present invention, the air blowing nozzle is formed between the partition plate and the wind direction plate over substantially the entire length of the pickup head, and the angle of the air blowing nozzle with respect to the road surface is determined by the suction of the air blowing nozzle. The angle θ1 is set in a predetermined range near the duct, the angle θ2 is set in the other range, and the angle θ1 is larger than the angle θ2. The air flow from the nozzle is less likely to be sucked through the opening of the suction duct, and the air flow blown out at an angle θ1 effectively acts on the road surface, thereby improving the cleaning efficiency. Further, the angles θ1, θ2, and the predetermined range are set so that the road surface cleaning state in the predetermined range blowing at the angle θ1 and the road surface cleaning state in the other range blowing at the angle θ2 are substantially the same. Is set, the cleaning effect is not uneven in the entire length direction of the pickup head. In the case where the predetermined range is set to 30 to 40% of the total nozzle length, the predetermined range corresponds to the connection position of the suction nozzle connected to the pickup head. It is effective in preventing the intake of the air flow.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing a road cleaning vehicle provided with a dust collection device of the present invention.
FIG. 2 is a sectional view taken along line II-II of FIG.
FIG. 3 is a view as viewed in a direction III in FIG. 2;
FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;
FIG. 5 is an explanatory view showing a blowing nozzle in a predetermined range.
FIG. 6 is an explanatory diagram showing blow nozzles in other ranges.
FIG. 7 is an explanatory diagram showing a relationship between a blown air flow at an angle θ1, a blown air flow at an angle θ2, and a suction duct.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Road surface cleaning car 2 Pickup head 3 Vehicle 13 Partition plate 14 Compressed air chamber 15 Suction chamber 20 Air blowing nozzle 21 Compression duct 22 Suction duct 23, 24 Wind direction plate L1 Predetermined range L2 Other range R Road surface θ1 Predetermined range Angle θ2 Angle in other range

Claims (3)

車両の略全幅に亘るピックアップヘッド内を仕切り板で上側の圧空室と下側のサクション室とに仕切り、仕切り板と風向板との間にピックアップヘッドの全長に亘って空気吹出しノズルを形成し、圧空室にはブロアからの空気流を供給する圧送ダクトを連通し、ブロアの吸引側に連通する吸引ダクトをピックアップヘッドの長手一端部において前記サクション室に連通して成る塵埃等の回収装置において、前記空気吹出しノズルの路面に対する角度を、空気吹出しノズルの全長の内、前記吸引ダクトに近い所定の範囲においては角度θ1とし、それ以外の範囲では角度θ2とし、角度θ1>角度θ2としたことを特徴とする路面清掃車の塵埃等の回収装置。The inside of the pickup head over substantially the entire width of the vehicle is partitioned into an upper compressed air chamber and a lower suction chamber by a partition plate, and an air blowing nozzle is formed between the partition plate and the wind direction plate over the entire length of the pickup head, The compressed air chamber communicates with a pressure feeding duct that supplies an air flow from a blower, and a suction duct communicating with the suction side of the blower communicates with the suction chamber at one longitudinal end of the pickup head. The angle of the air blowing nozzle with respect to the road surface is defined as an angle θ1 in a predetermined range close to the suction duct of the entire length of the air blowing nozzle, an angle θ2 in other ranges, and an angle θ1> angle θ2. Dust collection device for road cleaning vehicles. 前記角度θ1で吹出す前記所定の範囲での路面清掃状態と、角度θ2で吹出す前記それ以外の範囲での路面清掃状態とが、略同程度となるように角度θ1、θ2、及び前記所定の範囲が設定されていることを特徴とする請求項1記載の路面清掃車の塵埃等の回収装置。The angles θ1, θ2 and the predetermined value are set so that the road surface cleaning state in the predetermined range blown at the angle θ1 and the road surface cleaning state in the other range blown at the angle θ2 are substantially the same. The dust collecting device for a road cleaning vehicle according to claim 1, wherein a range is set. 前記所定の範囲は、ノズル全長の30〜40%であることを特徴とする請求項1または2記載の路面清掃車の塵埃等の回収装置。The dust collecting device for a road cleaning vehicle according to claim 1 or 2, wherein the predetermined range is 30 to 40% of a total nozzle length.
JP2003121228A 2003-04-25 2003-04-25 Dust collection device for road sweeper Expired - Fee Related JP4147582B2 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007186912A (en) * 2006-01-13 2007-07-26 Doro Hozen Gijutsu Center Road surface cleaning apparatus and road surface cleaning method
CN100417769C (en) * 2005-12-30 2008-09-10 长沙中联重工科技发展股份有限公司 Road-cleaning absorption nozzle with combined reverse blowers
CN100441780C (en) * 2005-12-30 2008-12-10 长沙中联重工科技发展股份有限公司 Absorption nozzle for road cleaning
CN100453738C (en) * 2006-08-08 2009-01-21 赵宏坚 Street sweeper suction nozzle
CN102912754A (en) * 2012-11-06 2013-02-06 广西玉柴专用汽车有限公司 Reverse blowing and dust collecting device of sweeper
CN104631373A (en) * 2015-03-10 2015-05-20 湖南大学 Variable flow area suction nozzle applied to road sweeper
CN107604865A (en) * 2017-10-24 2018-01-19 徐工集团工程机械有限公司 Suction nozzle of sweeping car structure and sweeping machine
CN107858976A (en) * 2017-11-14 2018-03-30 徐工集团工程机械有限公司 Clean car suction nozzle and there is its cleaning car
CN109356070A (en) * 2018-11-16 2019-02-19 福建环海环保装备股份有限公司 A kind of suction nozzle of sweeping car
CN113882302A (en) * 2021-10-19 2022-01-04 长沙中联重科环境产业有限公司 Suction pickup device and sweeper

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417769C (en) * 2005-12-30 2008-09-10 长沙中联重工科技发展股份有限公司 Road-cleaning absorption nozzle with combined reverse blowers
CN100441780C (en) * 2005-12-30 2008-12-10 长沙中联重工科技发展股份有限公司 Absorption nozzle for road cleaning
JP2007186912A (en) * 2006-01-13 2007-07-26 Doro Hozen Gijutsu Center Road surface cleaning apparatus and road surface cleaning method
CN100453738C (en) * 2006-08-08 2009-01-21 赵宏坚 Street sweeper suction nozzle
CN102912754A (en) * 2012-11-06 2013-02-06 广西玉柴专用汽车有限公司 Reverse blowing and dust collecting device of sweeper
CN104631373A (en) * 2015-03-10 2015-05-20 湖南大学 Variable flow area suction nozzle applied to road sweeper
CN107604865A (en) * 2017-10-24 2018-01-19 徐工集团工程机械有限公司 Suction nozzle of sweeping car structure and sweeping machine
CN107858976A (en) * 2017-11-14 2018-03-30 徐工集团工程机械有限公司 Clean car suction nozzle and there is its cleaning car
CN107858976B (en) * 2017-11-14 2023-12-05 江苏徐工国重实验室科技有限公司 Cleaning vehicle suction nozzle and cleaning vehicle with same
CN109356070A (en) * 2018-11-16 2019-02-19 福建环海环保装备股份有限公司 A kind of suction nozzle of sweeping car
CN113882302A (en) * 2021-10-19 2022-01-04 长沙中联重科环境产业有限公司 Suction pickup device and sweeper
CN113882302B (en) * 2021-10-19 2024-01-23 长沙中联重科环境产业有限公司 Suction pick-up device and sweeper

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