EP2401437B1 - Machine de nettoyage de voirie - Google Patents

Machine de nettoyage de voirie Download PDF

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Publication number
EP2401437B1
EP2401437B1 EP10712483.6A EP10712483A EP2401437B1 EP 2401437 B1 EP2401437 B1 EP 2401437B1 EP 10712483 A EP10712483 A EP 10712483A EP 2401437 B1 EP2401437 B1 EP 2401437B1
Authority
EP
European Patent Office
Prior art keywords
tank
storage volume
debris
street
machine according
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.)
Not-in-force
Application number
EP10712483.6A
Other languages
German (de)
English (en)
Other versions
EP2401437A1 (fr
Inventor
Guido Giletta
Enzo Giletta
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.)
Giletta SpA
Original Assignee
Giletta SpA
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 Giletta SpA filed Critical Giletta SpA
Publication of EP2401437A1 publication Critical patent/EP2401437A1/fr
Application granted granted Critical
Publication of EP2401437B1 publication Critical patent/EP2401437B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
    • E01H1/04—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt taking- up the sweepings, e.g. for collecting, for loading
    • E01H1/047—Collecting apparatus characterised by the hopper or by means for unloading the hopper
    • 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

  • the present invention relates to an improved machine for street cleaning, for example a street sweeping machine and/or a street washing machine.
  • a street cleaning machine generally comprises a storage volume in which the debris is collected and a system for delivering a liquid to dampen the dust and prevent it from being dispersed and/or to wash the surface by means of a high pressure water jet. Street cleaning machines may also comprise a conveyor system for automatically conveying the debris from the street to the storage volume. In machines with a mechanical conveyor system, the cleaning machine comprises a troughed chain conveyor. Alternatively the cleaning machine may be of the vacuum sweeper type, i.e. a vehicle, for example a wheeled vehicle, comprising movable front brushes, a vacuum system for sucking in and conveying the debris moved by the brushes and a humidification system to damp down the dust lifted by the brushes.
  • the vacuum sweeper type i.e. a vehicle, for example a wheeled vehicle, comprising movable front brushes, a vacuum system for sucking in and conveying the debris moved by the brushes and a humidification system to damp down the dust lifted by the brushes.
  • a street vacuuming and washing machine also comprises a washing system that delivers a high pressure liquid, for instance water, onto the street surface or onto surfaces that are difficult to reach such as pavements or the areas beneath parked cars.
  • a high pressure liquid for instance water
  • a preferential requirement for a street cleaning machine is autonomy of operation, i.e. the length of the duty cycle before using up all the liquid and reaching the maximum limit of stored debris.
  • a second important requirement for a street cleaning machine is compactness to make it more manoeuvrable, in particular for small machines used for cleaning town and city centres which can have narrow streets and alleys with limited space for manoeuvring.
  • the purpose of the present invention is to provide a street cleaning machine that overcomes the drawback described above.
  • FIG 1 designated as a whole by number 1 is a street cleaning machine, for example a machine for sweeping up debris from a street surface, for instance leaves, paper or gravel.
  • the street sweeper 1 is provided with wheels 2, at least two of which are driving wheels, a driver's cab 3 and a storage volume 4 that is arranged behind the cab 3 and is pivotally connected at a rear end 5 or side so as to be unloaded by means of a linear actuator 6.
  • the street sweeper 1 comprises at least a pair of rotating brushes 7 preferably arranged beneath the cab 3 and in front of the wheels 2, possibly one or more brushes mounted at the front in a cantilevered fashion or on mobile arms, a humidification system controlled automatically by the driver to deliver a liquid, for example water and preferably in the form of a fine spray, and a debris vacuum and storage system.
  • the brushes 7 are mounted on respective mobile arms and are motor-powered to rotate about a relative axis transversal to the surface to be swept.
  • the humidification system comprises a plurality of nozzles (not illustrated) at least some of which are arranged in proximity of the brushes 7 to prevent the brushes 7 from lifting too much dust during operation and/or to wash the street surface.
  • the humidification system also comprises a pump (not illustrated) and a tank from which the pump draws in the water to send to the nozzles.
  • the street sweeper 1 also comprises an auxiliary collapsible tank 9 releasably connected to the standard and normally rigid tank of the street sweeper to provide a reserve supply of water.
  • the standard humidification system of the street sweeper 1 can be appropriately modified to insert a port to which to connect the auxiliary tank 9.
  • the vacuum system comprises one or more suction inlets (not illustrated) arranged for example beneath the cab 3 behind the brushes 7, an extraction unit 10 attached for example to a roof R of the box 4 and a duct 11 to connect the inlets to the extraction unit 10 via a storage volume 12 defined within the box 4.
  • the extraction unit 10 defines a plurality of suction ports 13 opening towards a rear portion 14 of the roof R or above, an extraction device (not illustrated) fixed to the roof R and connected to the ports 13 and a grid 15 to protect the suction of the extraction device and prevent large pieces of debris, for example leaves, from damaging the moving parts, such as a rotor, of the extraction device.
  • the auxiliary tank 9 is flexible and in particular collapsible.
  • it is a bag formed of two sheets preferably of a multi-layer material having an elastomeric matrix and a reinforcing layer comprising a web.
  • the two sheets are joined in a fluid-tight manner along their respective perimeters to form an edge 16 by means of which the auxiliary tank 9 is joined to the walls 17 that laterally delimit the storage volume 12 of the box 4 in proximity to the cab 3.
  • the blocking system between the edge 16 and the walls 17 is configured to prevent any debris from escaping, i.e. so that most of the debris sucked in from the street surface is retained between the auxiliary tank 9 and the grid 15. Thus, only a small portion of the debris manages to escape and is drawn due to the force of gravity between the auxiliary tank 9 and a base 18 of the box 4.
  • the auxiliary tank 9 is arranged on a removable structure resting on guideways 19 rigidly connected to the side walls 17.
  • the guideways 19 are continuous and, preferably, inclined towards a tail gate 20 of the box 4.
  • the guideways 19 can be made of an L-shaped section bar joined to the side walls 17.
  • the removable structure comprises a frame 20 slidingly mounted on the guideways 19.
  • the auxiliary tank 9 is rigidly fixed to the frame 20.
  • the edge 16 is joined for example by means of bolts on three sides to the frame 20.
  • the frame 20 comprises a base 21 on which the auxiliary tank 9 rests at least when the latter is full of liquid, a pair of side walls 22 extending from the base 21 in an opposite direction with respect to the auxiliary tank 9 and two wings 23 that project with respect to the respective side walls 22 and are suitable to cooperate with the respective continuous guideways 19 to support the auxiliary tank 9.
  • the wings 23 come directly into contact with the continuous guideways 19 so that the base 21 is suspended with respect to the base 18 of the box 4.
  • a limited portion of the three sides of the edge 16 is not joined to the frame 20.
  • the portions adjacent to the corners of the edge 16 are not joined to the frame 20.
  • the auxiliary tank 9 is provided with an anti-swelling system which acts at least during the emptying of the box 4 to prevent all the liquid from flowing into the rear part of the tank 9 when the box is tilted and preventing the vacuumed debris from slipping out and thus preventing the complete emptying of the box 4.
  • the anti-swelling system is configured so as to define, at least locally, a limit for the maximum distance in a direction perpendicular to the base 18 between the two sheets of the auxiliary tank 9 so that the upper sheet of the auxiliary tank 9 remains substantially flat and preferably substantially parallel to the base 18.
  • the anti-swelling system envisages the arrangement of tie rods T inside the bag that between them join two anchoring portions arranged on opposite sides with respect to a central plane P of the tank 9 and belonging to the respective sheets of the auxiliary tank 9.
  • the tie rods T are substantially perpendicular to the base 18 when the auxiliary tank 9 and the frame 20 are mounted on the street sweeper 1, the box 4 is horizontal and the auxiliary tank 9 is full.
  • the length of the tie rods T defines the maximum value of the distance between the two sheets of the auxiliary tank 9.
  • the local maximum value of the distance between the two sheets of the auxiliary tank 9 is greater than the length of the tie rods T due to the flexibility of said sheets.
  • the distance is defined precisely and equal to the length of the tie rods T between the anchoring portions of the sheets connected respectively to the two ends of the tie rods T.
  • Each sheet, in the area of interposition surrounded by adjacent anchoring portions, is deformed under the action of the water contained in the tank so that the distance between two areas of interposition is greater than the length of the tie rods T.
  • the presence of the tie rods T defines a limit to the deformability of the tank in a direction perpendicular to the base 18.
  • the tie rods T are also flexible and can be made of the same material as the sheets of the auxiliary tank 9.
  • the auxiliary tank 9 can be provided with air outlets to simplify filling operations.
  • the outlets are connected to a device that prevents liquid from leaking out when the auxiliary tank 9 is compressed by the vacuumed debris.
  • said device comprises a piezometric tube 25 having one end that can reach a height that may even exceed the height of the box 4 of the sweeper.
  • the street sweeper 1 starts a duty cycle with the standard tank and the auxiliary tank 9, which may be connected to one another so that the auxiliary tank 9 continuously re-fills the standard tank, both filled to their respective maximum capacities.
  • the auxiliary tank 9 is housed within the storage volume 12 and occupies a portion thereof.
  • the vacuumed debris is conveyed to the storage volume 12 and deposited on the auxiliary tank 9.
  • the edge 16 of the auxiliary tank 9 is fixed to the frame 20 so as to obtain a seal with respect to the debris and prevent this from falling due to the force of gravity underneath the auxiliary tank 9 and thus make cleaning and emptying of the box 4 more difficult.
  • the sprayer system uses the water and the auxiliary tank 9 correspondingly collapses under the action of the vacuumed debris.
  • the storage volume 12 gradually increases until it reaches a maximum value when the auxiliary tank 9 is empty and completely collapsed under the weight of the debris vacuumed by the vacuum system.
  • the piezometric tube 25 prevents the weight of the debris from acting on the auxiliary tank 9 to make the liquid leak through the outlet.
  • the box 4 When the storage volume 12 has reached its maximum capacity, the box 4 is emptied due to the force of gravity by means of the linear actuator 6.
  • the tie rods T prevent the tank from swelling towards the tail gate 20 when the box is tipped. In this way, the auxiliary tank 9 maintains a substantially flat upper surface facing towards the grid 15 so that the debris slips out of the storage volume 12.
  • auxiliary tank 9 and the frame 20 can be unloaded from the box 4.
  • street sweepers already in use can be upgraded or retrofitted with minimum changes to existing and standard systems.
  • the street cleaning machine 1 may comprise a pressure washing system comprising a nozzle 30 that can be operated manually by an operator and supplied via a fluid circuit that may be separate from the circuit for the liquid used by the humidification system that interacts with the brushes 7.
  • the fluid circuit comprising the auxiliary tank 9 may also be configured to supply a corrosive and/or acid liquid to the nozzle 30 that would damage the standard tank but can be stored safety and reliably in the auxiliary tank 9.
  • the nozzle 30 is preferably fed by means of a hose 31 supported by a jointed arm 32 borne either by the box or fixed to the frame of the street sweeper 1
  • the tank 9 is not necessarily an auxiliary tank.
  • the street sweeper could have a collapsible tank housed within the storage volume 12 as its only tank.
  • the street sweeper 1 can also comprise a pressure washing system comprising fixed or manually or automatically operated nozzles, for example arranged in front of the brushes 7.
  • the auxiliary tank 9 can supply several systems in parallel.
  • the street sweeper also comprises a pressure washing system the latter can be connected in parallel to the humidification system with respect to the auxiliary tank 9.
  • the humidification and pressure washing systems can comprise separate pumps or share a single pump and can be provided with specific devices to regulate the pressure and the flow rate of the liquid required by the two different systems.
  • tie rods T may be elastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning In General (AREA)
  • Road Repair (AREA)

Claims (7)

  1. Machine (1) pour nettoyer la surface de voirie comprenant un système de distribution pour répandre un liquide sur la surface de voirie, un volume de stockage (12) configuré pour recevoir des débris provenant de la surface de voirie, un système d'acheminement pour acheminer les débris provenant de la surface de voirie vers ledit volume de stockage, et une cuve (9) pliable au sein dudit volume de stockage (12) et reliée audit système de distribution, ladite cuve (9) pouvant être démontée et retirée dudit volume de stockage (12), caractérisée en ce qu'elle comprend un châssis (20) relié fixement à ladite cuve (9) et pouvant être retiré dudit volume de stockage (12).
  2. Machine selon la revendication 1, caractérisée en ce que ledit volume de stockage (12) est défini par une benne (4) qui peut être inclinée et qui comporte une base (18), et en ce qu'elle comprend un dispositif configuré de façon à limiter le gonflement maximal de ladite cuve (9) dans une direction perpendiculaire à ladite base (28) lorsque ladite benne (4) est inclinée de façon à permettre l'évacuation des débris.
  3. Machine selon la revendication 2, caractérisée en ce que ledit dispositif (T) comprend une pluralité de tirants agencés au sein de ladite cuve (9) pour relier des parties respectives de ladite cuve (9) agencées sur des côtés opposés par rapport à un plan central (P) de ladite cuve (9).
  4. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite cuve (9) comprend au moins une ouverture pour relier ladite cuve (9) à l'environnement externe et un second dispositif (25) relié à ladite ouverture et configuré pour empêcher le liquide de s'échapper de ladite cuve (9) et de se disperser au sein dudit volume de stockage (12) lorsque les débris aspirés compriment ladite cuve (9).
  5. Machine selon la revendication 4, caractérisée en ce que ledit second dispositif (25) comprend un tube piézométrique (25) ayant une longueur appropriée.
  6. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite cuve (9) comprend un bord (16) fixé au sein dudit volume de stockage (12) de façon à retenir la plupart des débris aspirés au-dessus de ladite cuve (9).
  7. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que ledit système d'amenée de liquide est l'un parmi un système d'humidification et/ou un système de lavage à pression.
EP10712483.6A 2009-02-23 2010-02-23 Machine de nettoyage de voirie Not-in-force EP2401437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2009A000127A IT1394893B1 (it) 2009-02-23 2009-02-23 Macchina perfezionata per la pulizia stradale e relativo metodo di retrofit
PCT/IB2010/000347 WO2010095030A1 (fr) 2009-02-23 2010-02-23 Machine améliorée de nettoiement des chaussées et procédé associé de mise à niveau

Publications (2)

Publication Number Publication Date
EP2401437A1 EP2401437A1 (fr) 2012-01-04
EP2401437B1 true EP2401437B1 (fr) 2013-10-23

Family

ID=41228713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10712483.6A Not-in-force EP2401437B1 (fr) 2009-02-23 2010-02-23 Machine de nettoyage de voirie

Country Status (4)

Country Link
EP (1) EP2401437B1 (fr)
ES (1) ES2442916T3 (fr)
IT (1) IT1394893B1 (fr)
WO (1) WO2010095030A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102299A1 (de) * 2016-02-10 2017-08-10 Aebi Schmidt Deutschland Gmbh Kehrmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460584C3 (de) * 1974-12-20 1980-01-31 Wiedenmann Gmbh, 7901 Rammingen Kehrmaschine
FR2708216A1 (fr) * 1993-07-28 1995-02-03 Manuf Forage Cuve destinée à recevoir une quantité de liquide notamment pour le lavage des sols.
JP4146774B2 (ja) * 2003-08-29 2008-09-10 株式会社加藤製作所 清掃車

Also Published As

Publication number Publication date
ITTO20090127A1 (it) 2010-08-24
WO2010095030A1 (fr) 2010-08-26
ES2442916T3 (es) 2014-02-14
IT1394893B1 (it) 2012-07-20
EP2401437A1 (fr) 2012-01-04

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