EP0029347A1 - Dispositif de balayage des rues et procédé pour la fabrication d'une buse d'aspiration - Google Patents

Dispositif de balayage des rues et procédé pour la fabrication d'une buse d'aspiration Download PDF

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Publication number
EP0029347A1
EP0029347A1 EP80304066A EP80304066A EP0029347A1 EP 0029347 A1 EP0029347 A1 EP 0029347A1 EP 80304066 A EP80304066 A EP 80304066A EP 80304066 A EP80304066 A EP 80304066A EP 0029347 A1 EP0029347 A1 EP 0029347A1
Authority
EP
European Patent Office
Prior art keywords
brush
mounting
nozzle
frame
refuse
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.)
Withdrawn
Application number
EP80304066A
Other languages
German (de)
English (en)
Inventor
Barrie Ewart Mealing
Keith Martin Gilliver
Raymond Henry Payne
James Boswell
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.)
Hestair Eagle Ltd
Original Assignee
Hestair Eagle Ltd
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 Hestair Eagle Ltd filed Critical Hestair Eagle Ltd
Publication of EP0029347A1 publication Critical patent/EP0029347A1/fr
Withdrawn legal-status Critical Current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
    • E01H1/02—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
    • E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
    • E01H1/05—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes
    • E01H1/053—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes having vertical axes
    • 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
    • E01H1/05—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes
    • E01H1/056—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes having horizontal axes
    • 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 road sweeping apparatus such as, for example, road sweeping apparatus to be mounted on a self-propelled chassis to form a self-propelled road sweeping vehicle.
  • road sweeping apparatus is to be interpreted as covering also apparatus similar to road sweeping apparatus but which is intended primarily for sweeping other large surfaces such as pavements or sidewalks, airport runways and the like.
  • the present invention is concerned, with aspects of the design of the brush gear and refuse collecting nozzle used in road sweeping apparatus.
  • the components of the brush gear and nozzle system co-operate and interact and are functionally interdependent on each other.
  • Currently available road sweeping apparatus is considered to be inadequate in relation to certain aspects of the mounting and control of the brush gear and the refuse collecting nozzle.
  • Other necessary improvements relate to the construction and fabrication of the brush gear and the nozzle.
  • a first aspect of the present invention relates more specifically to the mounting of the narrow sweep or scarifying brush.
  • the scarifying brush is usually mounted on the road sweeping apparatus so as to project laterally therefrom. It is mounted for rotation by a drive to effect sweeping in the region of one side of the apparatus and serves to sweep gutters and the like, which cannot be swept by a cylindrical wide sweep brush.
  • the scarifying brush thus projects from the road sweeping apparatus in its working position, but it is desirable that the brush can be moved to a retracted transport position for times when the vehicle is travelling along the highway but not sweeping, that is when going to and from its working location.
  • the scarifying brush has usually been mounted on a linkage which is constructed to permit the brush to swing rearwards to a stowed position for transport.
  • a cylindrical wide sweep brush is to be provided having a width comparable to the total width of the road sweeping apparatus, as is desirable for efficient sweeping, then there is insufficient room available to swing the scarifying brush to a stowed position in this manner.
  • An object of the present invention is to provide road sweeping apparatus offering improvements in respect of one or more of the problems and design factors identified above.
  • road sweeping apparatus comprising:
  • a second aspect of the present invention also relates to the mounting of the scarifying or narrow sweep brush.
  • a particular problem that arises in relation to the scarifying brush lies in the adoption of a satisfactory attitude for the brush relative to the road surface being swept in order to compromise between the requirements for roads of normal camber and the requirements for roads of extreme camber.
  • An object of this aspect of the invention is to provide road sweeping apparatus offering improvements in relation to one or more of the problems identified above.
  • said remotely operable actuator forms part of said mounting means for mounting the brush on the frame or body.
  • Said mounting means may comprise spaced apart link elements each pivotally connected to the brush, one of the link elements comprising said remotely operable actuator.
  • a third aspect of the present invention relates to another aspect of the mounting of the narrow sweep or scarifying brush.
  • An object of this aspect of the present invention is to provide road sweeping apparatus in which the mounting of the scarifying brush offers improvements in relation to the problems identified above.
  • said resilient mounting means permits angular movement of said link about an upwardly extending axis so that the brush can yield under impact with fixed objects encountered during movement of the road sweeping apparatus in the normal forward direction during use.
  • a fourth aspect of the present invention relates to the rotatable cylindrical brush which extends laterally with respect to the direction of operative forward motion of road sweeping apparatus during use. More particularly, the invention relates to the mounting means for this cylindrical brush.
  • An object of this aspect of the present invention is to provide road sweeping apparatus offering improvements in relation to the mounting of the cylindrical brush.
  • each of said joints permitting relative turning movement is in the form of a ball joint at said forward end of each mounting arm, the ball joint also permitting said up and down movement of the rear end of the mounting arm.
  • a pair of remotely operable actuators may act one between each mounting arm and the frame, said actuators being operable both to raise and lower the brush and to change the downthrust on the brush during sweeping.
  • the mounting means for the brush further comprises a brush attitude change-over mechanism whereby the main brush can be set at the attitude appropriate for sweeping material to opposite ends of the brush, the change-over mechanism comprising a change-over lever pivotally connected between the frame and one of the mounting arms and serving to transmit draught forces to said one mounting arm, and adjustment means for the change-over lever whereby the attitude of the change-over lever can be changed, so as to move said one mounting arm in the fore-aft direction and change the main brush.from one sweeping mode to. the other.
  • a change-over lever may be provided for each mounting arm.
  • Each mounting arm may be connected at its rear end to the main brush by a pivot joint having a pivot axis lying in a generally vertical plane and substantially at right angles to the longitudinal axis of the mounting arm.
  • the adjustment means for the change-over lever may comprise a remotely operable actuator pivotally connected between the change-over lever and the frame.
  • a fifth aspect of the present invention relates to the structure of the rotatable cylindrical brush of road sweeping apparatus.
  • said beam extends along substantially the full length of the brush; the beam providing substantially the total torsional and bending strength of the brush.
  • the steel beam may be of rectangular section.
  • the beam may be of rolled hollow section steel.
  • the brush elements may be drivably coupled to the beam by inwardly projecting pegs engageable with the beam.
  • a sixth aspect of the present invention relates to the refuse collecting nozzle of road sweeping apparatus which is provided to collect refuse swept by the brush gear, and more particularly to the mounting of such a nozzle.
  • the refuse collecting nozzle comprises road-engageable wheels mounted for pivotal movement about respective castor axes whereby the wheels exert no steering effect on the nozzle.
  • Said linkage connecting the refuse collecting nozzle to the frame may be provided with a pivot having an upwardly extending pivot axis permitting limited inward turning of the nozzle as the nozzle is moved to its working position whereby twisting of the air duct connected to the nozzle is reduced.
  • a fixed stop may be provided to limit extension of the thrust device and thereby define the working position of the nozzle.
  • the air duct may be connected to the nozzle so as to be put in tension by extension of the thrust device , such tension opposing further extension of the thrust device and serving to define the working position of the nozzle.
  • a seventh aspect of the'present invention relates to a further aspect of the mounting of the refuse collecting nozzle of road sweeping apparatus.
  • the refuse collecting nozzle is designed and mounted so that the refuse intake opening of the nozzle is at all times able to accommodate and take in such materials and objects then the problem arises that the relatively large gap through which air can thereby enter the nozzle results in a relatively slow air velocity and unsatisfactory refuse collecting performance by the nozzle during normal sweeping work.
  • An object of the present invention is to provide road sweeping apparatus offering improvements in relation to the problems identified above.
  • a remotely operable actuator is provided to effect pivotal movement of the nozzle about said axis.
  • Said actuator may be mounted so as to act between said support and the nozzle.
  • Said actuator may comprise a fluid pressure operated ram and said support may comprise a frame mounted on castor wheels.
  • An eighth aspect of the present invention relates to a method of making a refuse collecting nozzle for use in road sweeping apparatus.
  • the invention also provides a nozzle manufactured in accordance with the method.
  • the nozzles of road sweeping apparatus are connected to very powerful fans.
  • an auxiliary engine is provided to drive the fan and substantially the whole power output of this engine is absorbed in generating the air flow through the nozzle. Therefore, aerodynamic design considerations are of considerable importance in relation to such nozzles.
  • Such nozzles have been manufactured by casting techniques, and one well known nozzle is an aluminium casting.
  • Such casting techniques enable the required aerodynamic profiles to be obtained quite readily in association with the fundamental design feature of such a nozzle which is to provide a connection between a relatively long narrow opening and a (usually) cylindrical hose or air duct connecting the nozzle to the refuse tank.
  • An object of this aspect of the invention is to provide a method of making a nozzle for use in road sweeping apparatus, which is less expensive than currently used techniques such as casting, and/or which provides an improved nozzle structure.
  • substantially flat plates are secured between the shoulder members to define the front and rear edges of a refuse intake opening of the nozzle.
  • Substantially flat end plates may be secured, one to each shoulder member, to define the side edges of said refuse intake opening.
  • the upper connector tube and the shoulder members may be cut from tube or the like of the same external diameter.
  • a rubber or other elastomeric lining may be bonded over the inside surface of the nozzle structure.
  • a road sweeper 10 comprises a self-propelled chassis 12, having a driver's cab 14 and road sweeping apparatus 16 mounted on the chassis.
  • Road sweeping apparatus 16 comprises a frame or body 18, brush gear 20 and mounting and drive means therefor, a refuse collecting nozzle 22 and a refuse tank 24.
  • Frame 18 serves to support substantially the entire road sweeping apparatus 16 so that such apparatus can be mounted as a unit on chassis 12.
  • Brush gear 20 comprises a narrow sweep or scarifying brush 26 and a cylindrical wide sweep or main brush 28.
  • Scarifying brush 26 is rotatable in direction R1 about an upwardly extending axis 30 to effect sweeping in the region of one side of the road sweeping apparatus.
  • Wide sweep brush 28 is cylindrical in form and extends laterally with respect to the direction F of operative forward motion of the road sweeping apparatus during use. The wide sweep brush is mounted at an attitude with respect to direction F so as to sweep material towards one end of the brush.
  • Refuse collecting nozzle 22 is mounted behind brush gear 20 and positioned in relation thereto so as to collect refuse material swept by the brush gear.
  • the nozzle is connected by an air duct 32 to refuse tank 24 which in turn is connected by a further air duct (not shown) to a fan assembly (not shown) driven by an auxiliary engine, whereby the fan assembly can be caused to generate suction at the nozzle so as to draw refuse into the tank.
  • the mounting means 34 for mounting scarifying brush 26 on frame 18 comprises an inner mounting link 36, an outer mounting link 38 and actuating means for the links.
  • the inner link 36 is connected at its inner end through a pivot 40 to the frame 18, and is connected by a pivot 42 at its outer end to the adjacent end of outer mounting link 38.
  • Outer mounting link 38 itself is connected by a pivot 44 at its outer end to scarifying brush 26 through a mounting bracket assembly 46 thereon.
  • Bracket assembly 46 carries a hydraulic motor 48 which is drivably connected to brush 26 and supplied with hydraulic fluid via connections 50 from a pump driven by the auxiliary engine of the road sweeper, so as to rotate brush 26 about axis 30.
  • the actuating means for the inner and outer mounting links 36 and 38 is connected to the links and is operable to cause angular movement of the links relative to each other whereby the linkage formed thereby extends and retracts moving the scarifying brush 26 inwards and outwards relative to the frame 18.
  • Such inward and outward movement is needed to accommodate varying road configurations and movement of the road sweeper towards and away from the edge of the road. A further requirement for such movement is in association with lifting of the brush to move the brush to its retracted transport position.
  • the actuating means for the mounting links comprises primary, secondary and tertiary remotely operable actuators in the form of pneumatic rams 52, 54 and 56 respectively' which are connected to a source of pneumatic pressure, and associated control valves (not shown).
  • a compressor (not shown) driven by the engine of the road sweeper chassis 12 forms the source of pneumatic pressure, and is provided with a reservoir and conventional pneumatic control valves.
  • the axes of all the pivot connections of mounting means 34 for scarifying brush 26 are substantially horizontal.
  • Primary ram 52 is connected by a pivot 58 at its inner end to a bracket 60 fixed to inner mounting link 36, and at its outer end ram 52 is connected by a pivot 62, to outer mounting link 38.
  • ram 52 is connected between the inner and outer mounting links so as to be extensible and retractable to cause the linkage formed thereby to fold and likewise to extend and retract so as to move scarifying 26 inwards and outwards relative to frame 18.
  • Secondary pneumatic ram 54 is connected by a pivot 64 at its upper end to .a mounting bracket 66 which is itself connected to frame 18 through resilient mounting means described below.
  • the lower end of ram 54 is connected by a pivot 68 to inner mounting link 36.
  • the secondary actuator or ram 54 is connected between the frame and the inner mounting link so as to be operable to raise and lower the outer end of the inner mounting link, and hence to raise and lower scarifying brush 26 between its working position and a relatively high stowed position.
  • Ram 54 can also be pressurised during work to increase downthrust on brush 26.
  • ram 54 is shown to be directly connected by pivot 68 to inner mounting link 36.
  • ram 54 is not directly connected to inner mounting link 36 in the manner shown in Figure 2.
  • this connection is through a short lever arm (not shown) which is itself rigidly connected to link 36 and the principle of operation is thus correctly shown in Figure 2.
  • Outer mounting link 38 comprises spaced apart first and second link elements 70 and 72 which are pivotally connected between mounting bracket 46 on scarifying brush 26 and the inner mounting link 36.
  • Link elements 70 and 72 converge slightly in the upward direction whereby the geometry of'the linkage so formed is such that the attitude of scarifying brush 26 relative to the road surface being brushed changes as the brush moves inwards and outwards, thereby to maintain a satisfactory brush-to-road contact angle.
  • Many alternatives to the geometry of the linkage shown in the drawings could of course be adopted. It is to be noted in this connection that Figure 2 is diagrammatic and the angular inclinations shown therein are not definitive.
  • Second link element 72 is in fact formed by the tertiary pneumatic ram 56 which is operable to change the attitude of brush 26.
  • Ram 56 has a stroke length such that extension and retraction of the ram between the limits of its stroke length is such as to change the attitude of brush 26 between an attitude appropriate for roads of normal camber and an attitude appropriate for roads of extreme camber.
  • inner mounting link 36 is connected to frame 18 through resilient mounting means 74 which permits angular movement of the inner mounting link about an upwardly extending axis 76 so that the scarifying brush 26 can yield under impact with fixed objects encountered during movement of the road sweeping apparatus in direction F during use.
  • the resilient mounting means 74 serves to connect mounting bracket 66, which supports pivots 40 and 64, to frame 18.
  • the resilient mounting means comprises a metal- to-rubber-to-metal torsion spring assembly having two such torsion springs 78 and 80.
  • Each torsion spring comprises an annulus of rubber bonded between an outer metal member or casing seen in Figure 2 and a central inner torque-transmitting metal member (not shown).
  • the outer metal casing of springs 78 and 80 are welded to mounting bracket 66 and the inner torque-transmitting members of the springs are connected to frame 18 for the transmission of torsion by brackets 82 and 84-and associated pins 86 and 88.
  • a stop (not shown) is provided.
  • the stop is mounted on frame 18 and is engaged by an adjustable abutment (not shown) carried by mounting plate or bracket 66.
  • the stop comprises a rubber block bonded between two metal plates.
  • Torsion springs 78 and 80 are pre-loaded during assembly so as normally to hold the abutment against the stop so as to define the working position of brush 26.
  • Sensing means may be provided to sense angular movement of the inner mounting link 36 about axis 76, the sensing means being responsive upon said angular movement exceeding a predetermined maximum to generate a signal to cause pneumatic rams 52 and 54 to move brush 26 inwards and upwards.
  • pneumatic rams 52, 54 and 56 are controlled by means of a push button system incorporating solenoid valves whereby the driver of the road sweeper can, by actuating a single push button, move scarifying brush 26 between its working and transport positions. Furthermore, during sweeping the brush 26 floats in the lateral direction in response to variations in the position of the vehicle relative to the kerb. The downward pressure exerted on brush 26 can be increased during use by supplying pressure to ram 54 so as to increase the aggressivity of the sweeping action. During floating inward and outward movement of the brush, its attitude relative to the road surface is automatically adjusted by the geometry of the linkage provided by link elements 70 and 72.
  • the brush to road contact angle increases as the brush moves inwards, thereby reducing the effective brushing width of the brush and preventing material being swept too far inwards relative to the suction nozzle.
  • tertiary ram 56 can be retracted when necessary to bring the brush 26 to its extreme camber position for effective sweeping in deep gutters.
  • the whole brush assembly can yield by pivotal movement about axis 76 against springs 78 and 80. When the obstacle has been passed, the torsion springs return the assembly to its normal working position.
  • mounting means 100 for brush 28 comprises left and right mounting arms 102 and 104 respectively, connected between brush 28 and the frame 18, one arm at each end of the brush.
  • Each of the mounting arms is connected by a pivot joint 106 at its forward end (having regard to direction F) to frame 18 so that the rear end 108 of the arm can execute up and down movement about pivot 106.
  • Brush 28 is rotated in direction R2 by a hydraulic motor (not seen in Figure 4) at the same end of the brush as arm 104.
  • a joint at one end of each of the arms 102 and 104 which permits limited amounts of relative turning movement about an axis extending lengthwise of the arm, between the arm and the structure to which the arm is connected at said one end.
  • the joint permitting such relative turning movement is in the form of a ball joint at the forward end of each mounting arm, the ball joint constituting pivot joint 106, which thus also permits the up and down movement of the rear end 108 of each mounting arm.
  • An alternative arrangement would be to provide a • simple fixed horizontal axis pivot joint at 106 and to provide a ball joint on the axis 100 of brush 28.
  • a pair of remotely operable actuators in the form of pneumatic rams 112 and 114 are connected one between each mounting arm 102 and 104, and the frame 18.
  • the rams are operable both to raise and lower the wide sweep brush and to apply either a downwardly-directed thrust to the brush during sweeping so as to render the brushing action on the road more aggressive, or a limited upwardly- directed thrust to reduce aggressiveness.
  • Mounting means 100 further comprises a brush attitude change-over mechanism whereby the wide sweep brush 28 can be set at the attitudes appropriate for sweeping material to opposite ends of the brush.
  • the change over mechansim comprises two change-over levers 116 provided one at each end of the brush and each lever pivotally connected both to frame 18 and to its respective mounting arm 102 or 104.
  • the change-over levers serve to transmit draught forces to the mounting arms 102 and 104 and to provide the necessary adjustment of the mounting arms' positions.
  • change-over lever 116 shown in Figure 4 is pivotally mounted at 118 on a bracket 120 which is rigidly fixed to frame 18.
  • lever 116 is pivotally connected by ball joint 106 to the upper end of mounting arm 102.
  • lever 116 is pivotally connected to adjustment means in the form of a pneumatic ram 122 which is pivotally connected at 124 to the lever and at 126 to the frame 18. Actuation of ram 122 enables the attitude of change-over lever 116 to be changed so as to move mounting arm 102 in the fore-aft direction and to change the wide sweep brush from one sweeping mode to the other.
  • Each mounting arm.102 and 104 is connected to wide sweep brush 28 at its rear-end 108 by a pivot joint 128 having a pivot axis 130 extending substantially at right angles to the longitudinal axis of the respective mounting • arm 102 or 104.
  • Pivot 128 of arm 102 is welded solid during assembly after setting brush 28 at the correct lateral position relative to the road sweeper as a whole.
  • Pneumatic rams 112 and 114 have ball joints 132 and 134 at their upper and lower ends to accommodate the out-of-vertical-plane movements of the mounting arms as brush 28 follows road camber and is' moved between sweeping modes.
  • rams 112 and 114 raise and lower wide sweep brush 28 between its working and transport positions and apply downward loading when aggressive sweeping is required, and zero or upward loading for less aggressive sweeping.
  • Change-over between brushing modes is accomplished by actuation of rams 122 (one is extended and the other retracted). If change-over is not needed in a given machine rams 122 can be replaced by fixed links, or levers 116 can be welded to and form part of frame 18.
  • brush 28 floats freely and independently of frame 18. Each end of the brush can freely rise and fall by virtue of the articulation permitted by ball joints 106.
  • change-over lever 116 is also shown (in dotted lines) in an alternative position corresponding to the other sweeping mode of brush 28.
  • Modifications which could be made in this embodiment include the use of.rubber-to-metal type joints in place of the ball joints 106, 132 and 134. Also, only one change-over lever 116 need be used if it is of sufficient length to provide the necessary fore-aft movement of joints 106. Alternative meansmay be provided of accommodating the small angular movements of arms 102, 104 to accommodate movement of brush 28 between sweeping modes and to follow road camber.
  • Wide sweep brush 28 is generally cylindrical in form and is mounted for rotation about axis 110 by means of a hydraulic motor (not shown) located at the right hand end of the brush.
  • Brush 28 provides a major part of the sweeping width of road sweeping apparatus 16, and comprises a steel beam 138 extending along substantially the full length of the brush and having annular brush elements in the form of segments or sleeves 140 carrying outwardly projecting bristles 142 and located on the beam.
  • Segments 140 are drivably coupled to beam 138 so as to rotate therewith, by means of inwardly projecting pegs 144 engageable with'the beam.
  • the steel beam is of rectangular section rolled hollow section steel. Possible modifications include the use of a round section beam and of non-square section steel as such but formed, for example, by welding together channel sections.
  • the brush elements may be helical in form.
  • the next feature of road sweeper 10 to be considered is the method of mounting the refuse collecting nozzle 22, which is connected by air duct 32 to the refuse tanks 24 and hence to the air inlet of the fan whereby suction is applied to the nozzle so as to draw refuse into the tank.
  • Nozzle 22 is connected to frame 18 of the road sweeper through a linkage 146 which permits both up and down movement, and movement in a lateral direction L with respect to the direction F of normal operative forward movement of the road sweeping apparatus 16, and rolling movement about a fore-aft axis to accommodate road camber.
  • Linkage 146 is shown in Figure 1, and nozzle 22 is moveable on the linkage between a raised and retracted transport position (not shown), and a lowered and extended working position shown in Figure 1.
  • a remotely operable actuator in the form of a pneumatic ram 148 acts between frame 18 of the road sweeper and linkage 146 and hence nozzle 22.
  • Ram 148 is connected in this manner through respective ball type joints 150 and 152 so as to permit the necessary articulation during such movement.
  • Ram 148 extends., in the working position of nozzle 22, downwardly and laterally with respect to direction F from its upper end connected by ball joint 150 to frame 18, to its lower end connected by ball joint 152 to linkage 146 and hence to nozzle 22, whereby the ram can move the nozzle between the latter's transport and working positions.
  • Nozzle-mounting linkage 146 comprises a drawbar 154 connected at its forward end to frame 18 and connected at its rearward end to a support in the form of a generally U-shaped frame 156 on which nozzle 22 is mounted.
  • a ball joint 158 is provided at the forward end of drawbar 154 to connect it to an extension 160 of bracket 120 seen in Figure 4, whereby the drawbar can move both up and down and laterally, and can execute limited turning movement about its longitudinal axis.
  • the drawbar is pivotally connected by a pin (not shown) between upper and lower plates 162 on the forward portion of frame 156.
  • Frame 156 straddles nozzle 22 and carries at its rear end a pair of road-engageable castor wheels 168, 170 which are mounted for pivotal movement about respective castor axes whereby the wheels exert no steering effect on the nozzle.
  • connection pin 172 projects f laterally and forwardly from frame 156 at the front left hand portion thereof to receive ball joint 152 at the lower end of ram 148.
  • the line of action of ram 148 is indicated in Figure 6 by broken line 174 which extends upwardly and laterally inwardly from pin 172.
  • Stop means (not shown) is provided to act between drawbar 154 and frame 156 whereby pivotal movement between the two about axis 166 is limited, for a purpose to be described.
  • the line of action of ram 148 is approximately ten degrees from the vertical, whereby extension of the ram moves linkage 146 outwardly and downwardly and positively places nozzle 22 in its working position.
  • the nozzle is positively held in its working position by pressure in ram 148 during sweeping.
  • the geometry of the nozzle mounting apparatus described results in frame 156 experiencing a turning moment about axis 166 during sweeping so that frame 156 is held in the position defined by the stop means between the frame and drawbar 154.
  • an oppositely directed moment is exerted upon frame 156 whereby it moves to the other limit of its travel about axis 166.
  • This limited turning of the nozzle during movement between the working and transport positions is proportioned so as to correspond to the inherent turning of'the end of air duct 32 in moving between the transport and working positions of the nozzle whereby twisting of the air duct is reduced or eliminated.
  • a fixed stop (not shown) may be provided to limit 31 extension of ram 148 so as to positively define the working position of nozzle 22.
  • air duct 32 may be arranged so as to be put in tension by extension of the ram and serve to define the working position of the nozzle.
  • nozzle I mounting assembly includes its simplicity and ruggedness, the use of a single ram to move the nozzle both downwardly and laterally, the positive placement of the nozzle in its working position and the avoidance of undue twisting of the air duct connected to the nozzle.
  • Modifications to the above embodiment include the use of hydraulic, electric or other rams in place of pneumatic ram 148.
  • the nozzle has a generally funnel-shaped structure including a main body portion 176, an upper connector tube 178 to be connected to air duct 32, and a lower intake opening having a front edge 180.
  • Nozzle body 176 has welded thereto a pair of upwardly extending mounting flanges 182 which are located between a pair of complementary downwardly extending flanges 184 welded to frame 156.
  • a pair of pivot pins 186 and 188 define a pivot axis 190 extending laterally with respect to direction F whereby nozzle 22 can execute limited angular movement about axis 190 from its normal working position as shown in Figure 6 to a position in which front edge 180 of the refuse intake opening of the nozzle is raised to admit large objects such as bricks or piles of leaves.
  • a remotely operable actuator in the form of a pneumatic ram is provided to pivot nozzle 22 about axis 190.
  • the ram is connected between a pivot pin 192 fixed to one of the » flanges 182 of nozzle 22, and a bracket (not shown) mounted at the lower edge of the front of frame 156.
  • the line of action of the ram is indicated by broken line 194.
  • the ram could be replaced by a hydraulic or electric ram or indeed by an alternative remotely operable mechanical means such as a Bowden cable.
  • the nozzle In use, during normal sweeping operations the nozzle is held in its normal working position as shown in Figures 1 and 6. However, when the driver of the vehicle notices a build-up, for example, of leaves in front of the nozzle, he operates a push button to extend ram 194 causing nozzle 22 to pivot about axis 190 whereby the leaves are quickly and easily sucked into the nozzle and deposited in refuse tank 24.
  • the nozzle comprises upper connector tube 178.having an upper tubular portion 200 and a pair of opposed downwardly tapering flanges 202 and 204 on opposite sides of the upper tubular portion and at the lower edge thereof.
  • a pair of shoulder members 206, 208 of channel section fit against the tapering flanges 202 and 204 and are secured thereto by welding.
  • the nozzle is completed by a pair of front and rear flat plates 210 and 212 respectively, secured between the shoulder members 206 and 208, and by a pair of end plates 214 and 216.
  • the end plates each comprise a rectangular flat lower portion 218 and a flat curved upper portion 220 shaped to Conform with the end profile of shouldersmembers 206 and 208.
  • the method of making nozzle 22 is as follows.
  • the nozzle is made entirely from cylindrical tube or the like cut to shape, and from substantially flat plate likewise cut to shape. No shaping operations are involved and all that is required is template cutting of the nozzle components from standard steel tube and standard steel plate, followed by welding. Sheet material rolled to a cylindrical or circular arc form could be used in place of steel tube.
  • Upper connector tube 178 and shoulder members 206 and 208 are all cut from 25.4 cm. diameter steel tube of 3mm. nominal thickness.
  • Flat plates 210, 212 and end plates 214, 216 are likewise cut to shape from 3mm. thickness steel plate. All shaping is achieved by use of templates in association with suitable metal cutting means such as an oxy-acetylene torch.
  • the previously template-cut nozzle components are simply seam welded together to form nozzle 22.
  • the nozzle may then be subjected to the further step of bonding a rubber lining over its inside surface to provide it with extra durability and corrosion resistance, and to reduce noise generation.
  • the principal advantage of this embodiment of the invention lies in the simple and inexpensive method of producing a nozzle having the necessary curved surfaces for satisfactory aerodynamic characteristics. Furthermore, a fabricated steel structure is less likely to suffer from fracture damage than, for example, a cast aluminium structure. Also the leading edge of the nozzle is provided by a wedge shaped member which is very strong and better able to resist impacts from raised gratings and bricks in the road. Moreover, the fabricated steel structure is relatively easy to repair.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
EP80304066A 1979-11-17 1980-11-13 Dispositif de balayage des rues et procédé pour la fabrication d'une buse d'aspiration Withdrawn EP0029347A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB7939864 1979-11-17
GB7939864 1979-11-17
GB8010457 1980-03-28
GB8010457 1980-03-28
GB8019528 1980-06-14
GB8019528 1980-06-14

Publications (1)

Publication Number Publication Date
EP0029347A1 true EP0029347A1 (fr) 1981-05-27

Family

ID=27260802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80304066A Withdrawn EP0029347A1 (fr) 1979-11-17 1980-11-13 Dispositif de balayage des rues et procédé pour la fabrication d'une buse d'aspiration

Country Status (2)

Country Link
EP (1) EP0029347A1 (fr)
GB (1) GB2065202B (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087936A2 (fr) * 1982-02-27 1983-09-07 SCHMIDT MANUFACTURING & EQUIPMENT (UK) LIMITED Moyens de commande d'une brosse
WO1984001399A1 (fr) * 1982-09-30 1984-04-12 Fmc Corp Systeme ameliore de recuperation de detritus pour machines de balayage des rues
WO1984001649A1 (fr) * 1982-10-22 1984-04-26 Swedelex I Stockholm Ab Distributeur automatique d'objets en feuille, par exemple de journaux
EP0134409A2 (fr) * 1983-09-09 1985-03-20 Fmc Corporation Procédé pour maintenir constante la surface de contact de balayage d'un balai-ramasseur
EP0180251A2 (fr) * 1982-09-30 1986-05-07 Fmc Corporation Système de débris pour dispositif de balayage des rues
FR2605907A1 (fr) * 1986-11-03 1988-05-06 Debefi Dispositif combine d'aspiration et de nettoyage monte sur un vehicule leger autonome pour aspiration de dechets industriels et urbains
FR2627788A1 (fr) * 1988-02-29 1989-09-01 Marcelo Sala Gabarro Machine de balayage montable sur des tombereaux ou vehicules analogues
CH680459A5 (fr) * 1989-11-27 1992-08-31 Rolba Ag
DE4143123A1 (de) * 1991-12-23 1993-07-01 Kroll Fahrzeugbau Umwelt Kehrmaschine
EP1061180A1 (fr) * 1999-06-18 2000-12-20 Mathieu Yno SA, (Société Anonyme) Ensemble de brossage pour le nettoyage urbain et véhicule équipé de cet ensemble.
CN106498891A (zh) * 2016-11-15 2017-03-15 江苏悦达专用车有限公司 干湿扫路车旋风除尘器卸灰门与箱体后门的联动开关系统
CN107165108A (zh) * 2016-03-08 2017-09-15 上海艺崇机械制造厂 一种太阳能电动扫路车
CN108118644A (zh) * 2018-01-31 2018-06-05 江苏天普星环境科技有限公司 一种防撞式喷嘴机构
DE102018104116B3 (de) 2018-02-23 2019-08-08 Aebi Schmidt Deutschland Gmbh Kehrmaschine
CN110273401A (zh) * 2019-07-30 2019-09-24 广西财经学院 自动化林木树叶收集装置
CN114000456A (zh) * 2021-11-15 2022-02-01 安徽爱瑞特新能源专用汽车股份有限公司 一种电动四轮转向扫洗吸一体车
WO2022105598A1 (fr) * 2020-11-18 2022-05-27 达闼机器人股份有限公司 Robot de nettoyage et ensemble élimination de poussière et lavage de celui-ci
CN114847814A (zh) * 2022-04-18 2022-08-05 广东美房智高机器人有限公司 一种清洁设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244741B (en) * 1990-06-08 1995-02-15 Schmidt Mfg & Equip Brush mounting arm assembly for a cleaning vehicle
SE506677C2 (sv) * 1990-12-10 1998-01-26 Owe Westin Sopmaskin
CN108643101B (zh) * 2018-05-25 2020-04-03 温州捷朴环保科技有限公司 一种公园施工用过道清洁设备
CN112112454A (zh) * 2020-10-09 2020-12-22 张兴水 一种多方位双面游泳池玻璃清洁装置
CN112554135A (zh) * 2020-12-04 2021-03-26 安徽南博机器人有限公司 道路清扫车扫刷吸盘升降机构

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DE1950865B (de) * Keller &Knappich GmbH, 8900 Augs bürg Lenkarm Halterung einer in ihrer Hau be gelagerten Besenwalze einer Straßen kehrmaschine
GB830453A (en) * 1957-03-05 1960-03-16 Lewin Road Sweepers Ltd Improvements in or relating to road sweeping machines
DE1856542U (de) * 1962-06-18 1962-08-16 Keller & Knappich Gmbh Vorrichtung zum halten einer besenwalze an strassenkehr- und -waschmaschinen.
CH364803A (de) * 1958-05-29 1962-10-15 Schoerling & Co Waggonbau Selbstaufnehmende Kehrmaschine für Startbahnen, Strassen, Wege oder dergleichen mit Unterdruckförderung
GB970674A (en) * 1962-02-22 1964-09-23 Lacre Ltd Machine for cleaning street and the like surfaces
CH403824A (fr) * 1963-04-30 1965-12-15 Johnston Brothers Eng Véhicule collecteur de déchets à action par le vide
US3241170A (en) * 1962-12-17 1966-03-22 Universal Metal Fabricators In Street sweeper
AT249733B (de) * 1962-09-28 1966-10-10 Sigfred Voelstad Selbstaufnehmende und -abladende Straßenkehrmaschine
GB1184795A (en) * 1966-11-14 1970-03-18 Johnston Brothers Eng Improvements in or relating to Suction Nozzles for use with Suction Refuse Collecting Vehicles
AT307481B (de) * 1967-04-24 1973-05-25 Jakob Reislaender Walzenbesen für Straßenkehrmaschinen od.dgl.
US3886623A (en) * 1972-07-14 1975-06-03 Elgin Sweeper Co Vacuum type sweeper
CH582281A5 (en) * 1974-09-12 1976-11-30 Rapid Masch Fahrzeuge Ag Road sweeping machine with rotating brush - has parallelogram lever system for lateral parallel movement of rotating brush

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1950865B (de) * Keller &Knappich GmbH, 8900 Augs bürg Lenkarm Halterung einer in ihrer Hau be gelagerten Besenwalze einer Straßen kehrmaschine
GB830453A (en) * 1957-03-05 1960-03-16 Lewin Road Sweepers Ltd Improvements in or relating to road sweeping machines
CH364803A (de) * 1958-05-29 1962-10-15 Schoerling & Co Waggonbau Selbstaufnehmende Kehrmaschine für Startbahnen, Strassen, Wege oder dergleichen mit Unterdruckförderung
GB970674A (en) * 1962-02-22 1964-09-23 Lacre Ltd Machine for cleaning street and the like surfaces
DE1856542U (de) * 1962-06-18 1962-08-16 Keller & Knappich Gmbh Vorrichtung zum halten einer besenwalze an strassenkehr- und -waschmaschinen.
AT249733B (de) * 1962-09-28 1966-10-10 Sigfred Voelstad Selbstaufnehmende und -abladende Straßenkehrmaschine
US3241170A (en) * 1962-12-17 1966-03-22 Universal Metal Fabricators In Street sweeper
CH403824A (fr) * 1963-04-30 1965-12-15 Johnston Brothers Eng Véhicule collecteur de déchets à action par le vide
GB1184795A (en) * 1966-11-14 1970-03-18 Johnston Brothers Eng Improvements in or relating to Suction Nozzles for use with Suction Refuse Collecting Vehicles
AT307481B (de) * 1967-04-24 1973-05-25 Jakob Reislaender Walzenbesen für Straßenkehrmaschinen od.dgl.
US3886623A (en) * 1972-07-14 1975-06-03 Elgin Sweeper Co Vacuum type sweeper
CH582281A5 (en) * 1974-09-12 1976-11-30 Rapid Masch Fahrzeuge Ag Road sweeping machine with rotating brush - has parallelogram lever system for lateral parallel movement of rotating brush

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087936A2 (fr) * 1982-02-27 1983-09-07 SCHMIDT MANUFACTURING & EQUIPMENT (UK) LIMITED Moyens de commande d'une brosse
EP0087936A3 (en) * 1982-02-27 1984-05-30 Schmidt Manufacturing & Equipment (Uk) Limited Brush control means
WO1984001399A1 (fr) * 1982-09-30 1984-04-12 Fmc Corp Systeme ameliore de recuperation de detritus pour machines de balayage des rues
US4557010A (en) * 1982-09-30 1985-12-10 Fmc Corporation Debris collection system for street sweepers
EP0180251A2 (fr) * 1982-09-30 1986-05-07 Fmc Corporation Système de débris pour dispositif de balayage des rues
EP0180251A3 (fr) * 1982-09-30 1986-09-10 Fmc Corporation Système de débris pour dispositif de balayage des rues
WO1984001649A1 (fr) * 1982-10-22 1984-04-26 Swedelex I Stockholm Ab Distributeur automatique d'objets en feuille, par exemple de journaux
EP0134409A2 (fr) * 1983-09-09 1985-03-20 Fmc Corporation Procédé pour maintenir constante la surface de contact de balayage d'un balai-ramasseur
EP0134409A3 (fr) * 1983-09-09 1986-04-23 Fmc Corporation Procédé pour maintenir constante la surface de contact de balayage d'un balai-ramasseur
FR2605907A1 (fr) * 1986-11-03 1988-05-06 Debefi Dispositif combine d'aspiration et de nettoyage monte sur un vehicule leger autonome pour aspiration de dechets industriels et urbains
FR2627788A1 (fr) * 1988-02-29 1989-09-01 Marcelo Sala Gabarro Machine de balayage montable sur des tombereaux ou vehicules analogues
CH680459A5 (fr) * 1989-11-27 1992-08-31 Rolba Ag
DE4143123A1 (de) * 1991-12-23 1993-07-01 Kroll Fahrzeugbau Umwelt Kehrmaschine
EP1061180A1 (fr) * 1999-06-18 2000-12-20 Mathieu Yno SA, (Société Anonyme) Ensemble de brossage pour le nettoyage urbain et véhicule équipé de cet ensemble.
FR2795107A1 (fr) * 1999-06-18 2000-12-22 Mathieu Yno S A Ensemble de brossage pour le nettoyage urbain et vehicule equipe de cet ensemble
CN107165108A (zh) * 2016-03-08 2017-09-15 上海艺崇机械制造厂 一种太阳能电动扫路车
CN106498891A (zh) * 2016-11-15 2017-03-15 江苏悦达专用车有限公司 干湿扫路车旋风除尘器卸灰门与箱体后门的联动开关系统
CN106498891B (zh) * 2016-11-15 2018-06-26 江苏悦达专用车有限公司 干湿扫路车旋风除尘器卸灰门与箱体后门的联动开关系统
CN108118644A (zh) * 2018-01-31 2018-06-05 江苏天普星环境科技有限公司 一种防撞式喷嘴机构
DE102018104116B3 (de) 2018-02-23 2019-08-08 Aebi Schmidt Deutschland Gmbh Kehrmaschine
CN110273401A (zh) * 2019-07-30 2019-09-24 广西财经学院 自动化林木树叶收集装置
CN110273401B (zh) * 2019-07-30 2024-05-31 广西财经学院 自动化林木树叶收集装置
WO2022105598A1 (fr) * 2020-11-18 2022-05-27 达闼机器人股份有限公司 Robot de nettoyage et ensemble élimination de poussière et lavage de celui-ci
CN114000456A (zh) * 2021-11-15 2022-02-01 安徽爱瑞特新能源专用汽车股份有限公司 一种电动四轮转向扫洗吸一体车
CN114847814A (zh) * 2022-04-18 2022-08-05 广东美房智高机器人有限公司 一种清洁设备
CN114847814B (zh) * 2022-04-18 2023-12-26 广东美房智高机器人有限公司 一种清洁设备

Also Published As

Publication number Publication date
GB2065202A (en) 1981-06-24
GB2065202B (en) 1984-04-18

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Inventor name: GILLIVER, KEITH MARTIN