EP0536172B1 - Vehicules de nettoyage et autres vehicules - Google Patents

Vehicules de nettoyage et autres vehicules Download PDF

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Publication number
EP0536172B1
EP0536172B1 EP19910910488 EP91910488A EP0536172B1 EP 0536172 B1 EP0536172 B1 EP 0536172B1 EP 19910910488 EP19910910488 EP 19910910488 EP 91910488 A EP91910488 A EP 91910488A EP 0536172 B1 EP0536172 B1 EP 0536172B1
Authority
EP
European Patent Office
Prior art keywords
matter
storage tank
water
tank
screen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19910910488
Other languages
German (de)
English (en)
Other versions
EP0536172A1 (fr
Inventor
Richard M. Bradley
Peter G. Thompson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCHMIDT WINTERDIENST- und KOMMUNALTECHNIK GmbH
Original Assignee
SCHMIDT WINTERDIENST- und KOMMUNALTECHNIK GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SCHMIDT WINTERDIENST- und KOMMUNALTECHNIK GmbH filed Critical SCHMIDT WINTERDIENST- und KOMMUNALTECHNIK GmbH
Publication of EP0536172A1 publication Critical patent/EP0536172A1/fr
Application granted granted Critical
Publication of EP0536172B1 publication Critical patent/EP0536172B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles
    • E01H1/0845—Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers

Definitions

  • This invention relates to a self-propelled cleaning vehicle in accordance with the preamble of claim 1.
  • a self-propelled cleaning vehicle in accordance with the preamble of claim 1.
  • Such a vehicle is used for cleaning roads and/or runaways and/or pavements and/or carrying out industrial cleaning and sweeping operations. It comprises a suction gear including a suction nozzle with side brushes rotating about upwardly extending axes and serving to sweep matter laterally inwardly into the path of the vehicle.
  • Known cleaning vehicles (DE-A-2537004, FR-A-287553) are provided with a matter storage tank in which screening means separates water from solid matter deposited in the tank, and the water is re-injected into the nozzle or suction duct of the vehicle's cleaning assembly.
  • An object of the present invention is to provide a cleaning vehicle in which maintenance of the screening means is rendered less arduous and/or demanding, or otherwise facilicated, or improved in relation to said prior art.
  • the screen of a water recirculation system in a cleaning vehicle is accessible from outside the matter storage tank, such access permitting removal and cleaning, and the access being provided by means of a separate sealable opening and an associated closure in said tank in the region of said screening means.
  • the sealable access opening for the screening means allows cleaning of the screen independently of the opening for emptying the matter storage tank.
  • the associated closure for the access opening serves to collect screen water on the downstream side of the screen.
  • the closure is a housing to which the screened water is delivered.
  • the screened water enters the housing through said opening in the tank which is sealed by the housing.
  • the housing extends across the width of the vehicle defining a transversely extending channel; it serves to collect the screened water and deliver same laterally to a water storage tank at one side of the vehicle.
  • Quick attach/detach means is provided for the screen including spring clips location means and a manipulation handle on the screen.
  • Two screens may be arranged, one on each side of the matter storage tank.
  • suction duct 30 leads to tank 32, the duct terminating at 210 for deposition of matter in the tank.
  • Screening means 212 is provided for separating water from matter deposited in the tank. Below the screening means is provided a separated water tank 214 to store water separated by the screening means.
  • Recirculation means 216 is provided to deliver screened water from tank 214 to be mixed with the air stream containing matter (removed for example from a road surface) passing through duct 30.
  • the recirculation means comprises a pump 218 delivering through hydraulic lines 220 to spray nozzles 222 and 224 located, respectively, at the lower and upper ends of duct 30.
  • the separated water from tank 214 is re-injected into the suction duct for redeposition with the solid matter passing therethrough, in the tank 32.
  • a clean water storage tank 226 is provided alongside tank 214 to store clean top-up water for a purpose to be described.
  • the clean water tank 226 is of larger capacity than the separated water storage tank 214.
  • the separated water tank is of capacity 150 litres and the top-up water tank 226 is of four times that capacity, namely 600 litres.
  • matter storage tank 32 holds, on average, about 300 litres of water in course of being screened from the matter, at any one time.
  • Top-up means 228 comprises a pump 230 delivering through a conduit 232 to tank 214.
  • Level sensing means such as a float 234 actuating a control 236 is provided to maintain the level of water in tank 214.
  • Control 236 may itself incorporate a valve connected to line 232 to control discharge from pump 230 which runs continuously. Alternatively, control 236 may be arranged to energise the pump as and when required.
  • Fig. 1 the return flow of screened water from tank 32 to separated water tank 214 is indicated at 238.
  • the inward flow of water is pumped from tank 214 to nozzles 222 and 224, this flow proceeding through suction duct 30 and mixed with the air blast therein is indicated at 240.
  • There is mixed with this flow an additional amount of water which may have been sprayed onto the surface 242 being swept from spray jets as indicated at 244 by brush spray bars 246 or by a general spray bar at the front of vehicle 10.
  • This water enters the vehicle in the air stream drawn into nozzle 22, as indicated at 248 and proceeds through duct 30 intimately mixed with the air flow and (soon afterwards) with the water flow 240 from nozzles 222.
  • the water supply to spray bars 246 is provided by pump 230 (or a separate oump) delivering water from tank 226 of fresh water.
  • the hydraulic line 254 delivering from pump 230 to soray bar 246 is shown purely diagramatically in Fig. 1.
  • FIG. 1 There is also shown in Fig. 1 an oil pump 256, an oil heat exchanger 258, and oil conduits 260 forming part of a hydraulic drive system for various functions of the vehicle, including the rotable sweeping brushes of matter removal means 20 and/or the fan 500 (to be described later) which exhausts air from tank 32, and/or indeed the hydraulic drive for rear-wheels 12 of the vehicle.
  • These hydraulic drives all generate heat and, in this embodiment, this heat is utilized to raise the temperature of the water in tank 226 to avoid problems of freezing occurring under winter sweeping conditions.
  • the pump, conduits and heat exchanger are constructed in water-submersible form, and thus all effectively form heat exchangers to some extent, and the heat exchanger element 258 is specifically constructed for this purpose.
  • Fan assembly 500 to evacuate tank 32 and thereby to cause suction to be applied to suction duct 30.
  • Fan assembly comprises a fan housing 502 in which a radial flow fan 504 is rotatable about an upwardly extending axis 506 to apply suction through a downwardly facing inlet opening 508 communicating with tank 32.
  • the pressure side of the fan communicates with a fan outlet housing 510 leading to a sound attenuation duct 512.
  • Sound attenuation duct 512 comprises a generally linear receiving portion 514 connected to volute-shaped fan outlet housing 510, and a generally linear discharge portion 516, these portions being connected by a curved connecting portion 518.
  • Receiving portion 514 has a slight upwardly-joggled duct portion 519.
  • receiving portion 514 of the sound attenuation duct 512 is connected to the pressure side of the fan.
  • the discharge portion of the sound attenuation duct has an upwardly facing outlet 520, of generally square shape, with a smoothly curved and upwardly sloping air guide surface 522 below it to minimise turbulance as the air changes from a horizontal trajectory to a generally vertical one.
  • the central axis 524 of the sound attenuation duct 512 which extends longitudinally of the duct through its three portions, also extends generally horizontally, and thus the air discharged from the pressure side of fan 504 likewise passes generally horizontally first away from the fan through portion 514, then through 180 degrees through connecting portion 518, and then towards the fan again through portion 516, followed by a smooth change of direction from horizontal to vertical as the air passes through outlet 520.
  • the result is a relatively long path of the air from the fan before it reaches the outlet, with a direction change of 180 degrees in one plane followed by 90 degrees in another, after an initial upward shift at 519 in the generally horizontal trajectory. Sound attenuation materials may be secured to the walls of the duct. The net result is a very significant reduction in fan discharge noise, without significant reduction in fan efficiency.
  • FIG. 3 tank 32 is seen to be provided with connection means 262 for suction duct 30. Though not shown in Fig. 4, it can be seen from Fig. 1 that duct 30 continues to its end 210 within tank 32.
  • Screening means 212 comprises two rectangular screens 266, 268, one at each side of the central connection means 262.
  • Each of the screens 266, 268 is of wedge wire construction. That is to say, the screen consists of parallel elements of wedge or triangular-section metallic material, these being cross-reinforced by transverse supports at intervals.
  • the effective screen size is defined by the space between the adjacent front edges of the screen elements. This is illustrated in Fig. 5 in which four representative screen elements 268 are shown, and the "mesh size" is indicated at 270.
  • the inner side (at which solid matter is retained) of the tank is identified at 272.
  • the mesh size is 1.5 mm.
  • the range of useable mesh sizes is from 0.5 to 3.0 mm and preferably from 1.0 to 2.0 mm.
  • screen 266 has a support frame 274 and is secured in position by location behind clips 276 by manipulation using handles 278, but is manually removable from its in-use postion after releasing a water collection housing 280 by means of an over-centre action release handle 282.
  • Housing 280 servies to collect screened water.
  • the housing extends laterally across the width of the vehicle.
  • Housing 280 defines a transversely-extending channel 284 serving to collect and deliver the screened water emerging from tank 32 through openings 281, 283 therein to tank 214 at one side of the vehicle (opposite the vehicle engine).
  • the screens 266 and 268 can be manually removed through the openings 281, 283 and the screens can then be cleaned, for example by back-washing with a hose. The screens are then replaced and the housing is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Detergent Compositions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Body Structure For Vehicles (AREA)

Claims (5)

  1. Véhicule de nettoyage automoteur comprenant :
    a) une caisse de véhicule;
    b) un moyen d'enlèvement de matières pouvant être placé en relation de travail avec une surface à nettoyer, de manière à en enlever des matières;
    c) une conduite aspirante (30) associée opérationnellement audit moyen d'enlèvement de matières pour délivrer lesdites matières à un réservoir de stockage de matières (32) comprenant une ouverture pouvant être fermée à des fins de vidage;
    d) un moyen de tamisage (212) afin de séparer l'eau des matières déposées dans ledit réservoir de stockage de matières (32);
    e) un réservoir de stockage d'eau (214) pour stocker l'eau séparée par ledit moyen de tamisage (212);
    f) un moyen de mise en circulation (216) pour délivrer l'eau tamisée provenant dudit réservoir de stockage d'eau (214) à des fins de mélange avec les matières passant par ladite conduite aspirante pour redéposition avec les matières dans le réservoir de stockage de matières (32),
    g) ledit moyen de tamisage (212) comprenant un tamis (206) et son support associé pour le maintenir à un endroit séparant une première zone dudit réservoir de stockage de matières (32), sur le côté en amont dudit tamis (266), d'une seconde zone de ce réservoir à son côté en aval;
    caractérisé en ce que
       h) une ouverture séparée pouvant être fermée de façon hermétique (281, 282) et une fermeture associée sont fournies dans ledit réservoir de stockage de matières (32) dans la zone dudit moyen de tamisage (212), ladite ouverture pouvant être fermée de façon hermétique (281, 283) permettant à un opérateur d'accéder audit moyen de tamisage (212) depuis l'extérieur du réservoir de stockage de matières (32) et permettant d'enlever le tamis (266, 268) de son support à des fins de nettoyage.
  2. Véhicule de nettoyage selon la revendication 1, dans lequel deux tamis (266, 268) sont disposés, un tamis étant placé à chaque côté du réservoir de stockage de matières (32).
  3. Véhicule de nettoyage selon la revendication 1,
       caractérisé en ce que
       ladite fermeture associée est un logement (280) pour recueillir et délivrer l'eau tamisée au réservoir de stockage d'eau (214).
  4. Véhicule de nettoyage selon la revendication 3,
       caractérisé en ce que
       ledit logement (280) s'étend sur la largeur du véhicule définissant un canal s'étendant dans le sens transversal.
  5. Véhicule de nettoyage selon la revendication 1,
       caractérisé en ce que
       un moyen d'assujettissement libérable pour ledit tamis comprend un moyen pour son attachement/détachement rapide.
EP19910910488 1990-06-08 1991-06-07 Vehicules de nettoyage et autres vehicules Expired - Lifetime EP0536172B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9012783 1990-06-08
GB9012783A GB2244744B (en) 1990-06-08 1990-06-08 Water recirculation system for a cleaning vehicle
PCT/EP1991/001067 WO1991019050A1 (fr) 1990-06-08 1991-06-07 Vehicules de nettoyage et autres vehicules

Publications (2)

Publication Number Publication Date
EP0536172A1 EP0536172A1 (fr) 1993-04-14
EP0536172B1 true EP0536172B1 (fr) 1995-01-04

Family

ID=10677269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910910488 Expired - Lifetime EP0536172B1 (fr) 1990-06-08 1991-06-07 Vehicules de nettoyage et autres vehicules

Country Status (6)

Country Link
EP (1) EP0536172B1 (fr)
AT (1) ATE116706T1 (fr)
DE (1) DE69106515T2 (fr)
ES (1) ES2068588T3 (fr)
GB (1) GB2244744B (fr)
WO (1) WO1991019050A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29514554U1 (de) * 1995-09-01 1995-11-16 Hako-Werke Gmbh & Co, 23843 Bad Oldesloe Fahrbare Naßreinigungsmaschine
DE102004032383B3 (de) * 2004-06-29 2006-03-09 Schmidt Holding Gmbh Selbstfahrende Kehrmaschine
DE102004032890A1 (de) * 2004-06-29 2006-01-26 Schmidt Holding Gmbh Selbstfahrende Kehrmaschine
DE102007020350A1 (de) * 2007-04-30 2008-11-06 Robert Hettich Kehrmaschine
DE102018104116B3 (de) 2018-02-23 2019-08-08 Aebi Schmidt Deutschland Gmbh Kehrmaschine
EP4144917A1 (fr) * 2021-09-01 2023-03-08 Marcel Boschung AG Balayeuse mécanique dotée d'un système automatique de nettoyage permettant de nettoyer un système de recyclage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1483261A (en) * 1974-10-09 1977-08-17 Melford Eng Ltd Suction cleaning apparatus
DE2537004A1 (de) * 1975-08-20 1977-03-03 Warwick Pump & Eng Co Geraet zur reinigung von flaechen
US4183116A (en) * 1978-04-21 1980-01-15 Thompson David L Wet-dry vacuum sweeper
CH678342A5 (en) * 1984-06-06 1991-08-30 Peter Ag Konrad Dust wetting road sweeping machine

Also Published As

Publication number Publication date
DE69106515D1 (de) 1995-02-16
ES2068588T3 (es) 1995-04-16
GB2244744A (en) 1991-12-11
WO1991019050A1 (fr) 1991-12-12
ATE116706T1 (de) 1995-01-15
EP0536172A1 (fr) 1993-04-14
GB9012783D0 (en) 1990-08-01
DE69106515T2 (de) 1995-05-11
GB2244744B (en) 1995-02-15

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