EP1571261B1 - Sweeping machine - Google Patents

Sweeping machine Download PDF

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Publication number
EP1571261B1
EP1571261B1 EP20050290483 EP05290483A EP1571261B1 EP 1571261 B1 EP1571261 B1 EP 1571261B1 EP 20050290483 EP20050290483 EP 20050290483 EP 05290483 A EP05290483 A EP 05290483A EP 1571261 B1 EP1571261 B1 EP 1571261B1
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EP
European Patent Office
Prior art keywords
brushing machine
machine
brush
rotary brush
brushing
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Application number
EP20050290483
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German (de)
French (fr)
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EP1571261A1 (en
Inventor
Arnaud Miossec
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Emily SAS
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Emily SAS
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Publication of EP1571261A1 publication Critical patent/EP1571261A1/en
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    • 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
    • E01H1/045—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt taking- up the sweepings, e.g. for collecting, for loading the loading means being a rotating brush with horizontal axis
    • 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

Definitions

  • the present invention relates to a brushing machine intended to be moved on a surface for cleaning, the machine comprising a pair of hinged flanges mounted between which is mounted a rotary cleaning brush adapted to be rotated through a hydraulic motor, the flanges being driven by means of at least one hydraulic cylinder adapted to change the position of the rotary brush relative to said machine.
  • the brush finishes, over time, to wear so that its outer diameter decreases progressively resulting in a corollary a gradual decrease in the cleaning efficiency.
  • Such a brushing machine may thus comprise a cradle mounted to be hinged to the frame of the machine for floatingly supporting the rotating brush against a spring.
  • the brushing machine can still, as described in the document EP-A-1 152 089 , comprise an articulated arm on the frame of the machine and which supports at its free end the axis of the brush driven by an electric motor.
  • An electric jack assisted by a spring device, is mounted on the machine so as to change the inclination of the arm and therefore the height position of the brush relative to the ground on which the machine rests.
  • a sensor of the current consumption of the electric motor for driving the brush and a control unit are provided in the machine to control the operation of the electric jack adapted to move the articulated arm.
  • the instantaneous intensity of the current consumed by the electric motor is within a predetermined range, only the spring device acts to apply a pressing force on said brush.
  • the control unit of the machine controls the operation of the electric cylinder so that it can lower the brush or raise it.
  • the compensation device of this machine may be able to raise and lower the brush automatically, the force exerted by the spring device on the brush is not constant over the stroke of the device, so that the cleaning efficiency is not constant. Furthermore, there is a sudden reactivity of the movement of the articulated arm generated by the operation of the electric actuator operating by pulses.
  • a brushing machine intended to be moved on a surface for cleaning, the machine comprising a pair of flanges hingedly mounted on said machine and between which is mounted a rotary cleaning brush adapted to be driven into rotation by means of a hydraulic motor, the flanges being driven by means of at least one hydraulic jack adapted to modify the position of the rotary brush relative to the machine, said machine being remarkable in that the circuit of the hydraulic motor is connected respectively to the upstream and downstream chambers of said or each hydraulic cylinder so that said or each hydraulic jack can apply the rotating brush on the surface to be cleaned by exerting on it a force of constant intensity in a particular range of pressure measured in the intake circuit of the hydraulic motor.
  • the rotating brush can follow automatically and flexibly the relief of the surface to be cleaned during the movement of the brushing machine on said surface.
  • the surface cleaning efficiency is increased and the wear of the brush is reduced compared to the services provided by known brushing machines.
  • the machine adapts automatically, during its operation, to the diameter of the brush that it uses or to its degree of wear, as well as to the asperities of the ground.
  • a distributor is connected to the feed circuit of the downstream chamber of said or each hydraulic cylinder, the distributor being provided with a pre-actuator with a threshold control.
  • fluid pressure which is connected to the intake circuit of the hydraulic motor so that the elevation of the pressure in the intake circuit of the hydraulic pump beyond a determined threshold can control the piloting of the distributor so as to that the downstream chamber of said or each hydraulic cylinder can be placed in communication with the intake circuit of the hydraulic motor to raise the rotating brush.
  • the brush is thus automatically positioned in a release position when it encounters an obstacle or when it is overloaded.
  • an adjustment means is provided on the pre-actuator to modify the pressure threshold causing its triggering.
  • the distributor is a proportional distributor.
  • the brushing machine is provided with a control member, located in the cabin of an engine for maneuvering it, and which makes it possible to act on the operating pressure of said or of each hydraulic cylinder. In this way, it is possible to act on the application pressure of the brush on the surface to be cleaned.
  • the machine is provided with a torsion limiting device intended to limit the angular offset between the two flanges during operation of said brushing machine.
  • the torsion limiting device consists of a pair of toothed wheels meshing respectively with racks made on one of the edges of the flanges and which are connected by means of a torsion shaft.
  • the machine is provided with handling devices intended to allow a self-propelled land vehicle to push, pull or lift.
  • the rotary brush is provided with a hollow hub fixed at its ends to the flanges by means of plates.
  • the hollow hub advantageously has a polygonal section and around which is threaded the rotating brush and at least one vertex has a groove adapted to receive a lug provided in a hollow tube constituting the rotating brush to allow its driving in rotation.
  • the hollow hub is internally provided, and at one end, a shaft held by a rolling means, mounted in a sleeve of a plate, its other end being provided with a drive nut in which is mounted a splined shaft of the hydraulic motor fixed in a sleeve of the other plate for rotating the rotating brush, the shaft passing through the hollow hub so that its other end can be accommodated in the drive nut.
  • the machine is provided with a first scraper mounted between the rotating brush and the collection device to improve the separation of dirt retained on the rotating brush to allow their ejection into the collection device.
  • the scraper also optimizes the scraping of the brush by preventing pile formation when the brush is raised.
  • the first scraper consists of a rectangular blade fixed between a pair of plates and one edge can be positioned so as to tangentially the bristles of the rotating brush.
  • the machine is provided with a second scraper disposed inside the brushing machine to allow the automatic cleaning of the rotating brush when the brushing machine is lifted by the machine and that the rotating brush is rotated by its drive motor.
  • the machine is provided with at least one additional brush.
  • the brushing machine 100 shown in Figs. 1 and 2 is intended to be driven by a self-propelled land vehicle such as an agricultural tractor on a surface to be cleaned, for example a roadway, to remove soil that may have deposited on said surface. It is provided with a frame 110 supported by wheels 112 capable of allowing the machine 100 to move on said surface by the machine.
  • a self-propelled land vehicle such as an agricultural tractor
  • wheels 112 capable of allowing the machine 100 to move on said surface by the machine.
  • the chassis 110 consists of two parts A and B articulated to each other by means of a hinge 114.
  • the part A mainly comprises a rotary brush 130 which is designed to remove frictionally dirt on a surface to be cleaned, while the part B mainly comprises a dirt collection device 150 such as a tray.
  • the two parts A and B are movable, under the action of an operating means 120, between a working position of the brushing machine 100 where the part A communicates directly with the part B, as it appears in FIG. Fig.4 , so that the rotating brush 130 can, during its rotation, projecting the dirt in the tray 150, and an open position of said machine visible to the Fig. 8 allowing the emptying of the tray 150, the internal cleaning of the brushing machine 100.
  • the operating means 120 is advantageously constituted to the Figs. 1 and 2 by a pair of hydraulic cylinders taking on joints provided respectively on the two parts A and B.
  • Part A thus consists of two lateral flanks 116 joined by an upper wall 117 and between which the rotary brush 130 is mounted.
  • Part B also consists of two lateral flanks 118 joined by a bottom 119, the lateral flanks 118 or the bottom 119 constituting the tank 150.
  • the parts A and B are open at their junction zone so that the dirt recovered by the rotary brush 130 can be transferred to the tank 150 of the part B when the two parts A and B are positioned in the working position of the brushing machine 100.
  • the frame 110 comprises handling members 122, such as transverse bars arranged at the ends of the parts A and / or B, between their respective lateral sides 116 and 118 to allow the machine to push said brushing machine 100, the pull and possibly lift it so that it can not touch the ground so that it can be moved quickly, to empty the tank 150 or clean it internally.
  • handling members 122 such as transverse bars arranged at the ends of the parts A and / or B, between their respective lateral sides 116 and 118 to allow the machine to push said brushing machine 100, the pull and possibly lift it so that it can not touch the ground so that it can be moved quickly, to empty the tank 150 or clean it internally.
  • a cradle 124 allowing attachment to a machine provided with lifting means can be associated in a floating manner with the handling members 122 so that the machine can push or pull the brushing machine 100 so that it can rest on the ground by its wheels 112 only under the effect of its own mass.
  • the cradle 124 is designed, however, to allow the machine to lift the brushing machine 100.
  • the cradle 124 advantageously comprises a frame 125 attached to two handling members 122 and traversed transversely by two floating bars mounted in lights 126 of a set of plates 127 adapted to be fixed on the machine.
  • a pair of flanges 160 is hingedly mounted by means of hinges 162 provided respectively on the flanks 116 of the part A, to pivotably support the rotary brush 130.
  • the flanges 160 are preferably mounted on the faces. outer flanks 116 of part A, as shown in this Fig. 2 .
  • the rotary brush 130 is provided with a hollow hub 132 fixed at its ends to the flanges 160 by means of plates 180, 180 '.
  • Each plate 180, 180 ' consists of a sleeve 182, 182' fixed against a flange 160 and mounted in one end of the hollow hub 132 to support rotation.
  • the hollow hub 132 is thus provided internally, and at one end, with a shaft 184 held by a rolling means R, such as a ball bearing, mounted in the sleeve 182 of the plate 180, while its other end is provided with a drive nut 186 in which is mounted the spline shaft of a drive means 140 such as a hydraulic motor, fixed in the sleeve 182 'of the other plate 180', for the rotational drive of the rotary brush 130.
  • a drive means 140 such as a hydraulic motor
  • the hollow hub 132 advantageously has a polygonal section, for example a hexagon, and around which is threaded the rotating brush and at least one vertex has a groove 132 adapted to receive a lug 136 provided in a hollow tube 138 constituting the rotating brush 130.
  • An operating means 170 such as a pair of hydraulic cylinders, is used to move the rotary brush 130 between a working position where it can be placed on the surface to be cleaned as shown in FIG. Fig. 2 and a release position where it is retracted into part A as shown in Fig. 8 .
  • each jack 170 is articulated to this effect, on the one hand, on a first articulation 172 provided on each sidewall 116 and, secondly, on a second articulation 174 provided on each flange 160.
  • the joints 172 are common to those used by the hydraulic cylinders of the operating means 120 to open the brushing machine 100.
  • each jack 170 can act independently on one end of the hollow hub 132, so that the brush rotary 130 may be laterally inclined to, for example, dislodge soil deposited in a rut of a road on which the brushing machine is moved.
  • the brushing machine 100 may be provided with a torsion limiting device 200, shown at Fig. 2 , and intended to limit the angular offset between the two flanges 160 during operation of said brushing machine 100.
  • the torsion limiting device 200 advantageously consists of a pair of gear wheels 210 meshing respectively on racks 212 made on the one of the edges of the flanges 160 and which are connected by means of a torsion shaft 214 supported by bearings passing through the lateral flanks 118 of the part B.
  • the angular offset of the flanges 160 is thus limited by the torsion of the torsion shaft 214 during operation of the brushing machine 100.
  • a first scraper 230 visible to the Fig. 4 is mounted between the rotating brush 130 and the tray 150.
  • It advantageously consists of a rectangular blade fixed between a pair of plates mounted free to pivot along an axis parallel to that of the rotary brush 130 being disposed in the lower part of the part A.
  • the positioning of the blade is such that one of its edges can be arranged so that it can tangentially the bristles of the rotary brush 130.
  • a clamping device such as bolts, can clamp the pair of plates against the flanges 116 in position.
  • a second scraper 240 is disposed inside the part A, in its lower and front part, to allow the automatic cleaning of the rotary brush 130 when the brushing machine 100 is lifted from the ground by the machine and the brush
  • the second scraper 240 also optimizes the operation of the rotary brush 130 and also makes it possible to limit the formation of a pile under the machine after stopping the operation of the brush.
  • the second scraper 240 is made up of Fig. 4 a rectangular blade disposed parallel to the axis of the rotary brush 130.
  • the brushing machine 100 may be provided with at least one additional brush 250, advantageously driven by a hydraulic motor, and fixed on a flank 116 of the part A.
  • Positioning means such as a plurality of orifices can clamp said or each additional brush in a suitable position, for example to clear curbs of curbs.
  • FIG. 5 the hydraulic diagram for connecting the operating and driving members of a brush of a brushing machine.
  • a distributor T1 for example a 4/2 type distributor, is provided on a machine N handling the brushing machine for dispensing hydraulic fluid under pressure to different hydraulic members of said brushing machine.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Description

La présente invention concerne une machine de brossage destinée à être déplacée sur une surface pour la nettoyer, la machine comprenant une paire de flasques montés de manière articulée et entre lesquels est montée une brosse rotative de nettoyage apte à être entraînée en rotation par l'intermédiaire d'un moteur hydraulique, les flasques étant mus par l'intermédiaire d'au moins un vérin hydraulique apte à modifier la position de la brosse rotative par rapport à ladite machine.The present invention relates to a brushing machine intended to be moved on a surface for cleaning, the machine comprising a pair of hinged flanges mounted between which is mounted a rotary cleaning brush adapted to be rotated through a hydraulic motor, the flanges being driven by means of at least one hydraulic cylinder adapted to change the position of the rotary brush relative to said machine.

Elle est destinée à être utilisée, par exemple, pour le nettoyage des voiries urbaines, de sols de déchetteries ou de corps de fermes.It is intended to be used, for example, for cleaning urban roads, waste land or farm buildings.

Une machine de brossage destinée à nettoyer des surfaces approximativement planes et horizontales comporte généralement un châssis pourvu de roues aptes à permettre son déplacement sur ladite surface et dans lequel est montée une brosse rotative cylindrique dont l'axe de rotation est disposé parallèlement au sol et qui peut être entraînée en rotation, par l'intermédiaire d'un moteur d'entraînement, lors du déplacement de ladite machine sur le sol. Un bac, disposé dans la partie arrière de la machine, permet de récupérer les salissures enlevées par la brosse.A brushing machine for cleaning approximately flat and horizontal surfaces generally comprises a frame provided with wheels adapted to allow its movement on said surface and in which is mounted a cylindrical rotary brush whose axis of rotation is arranged parallel to the ground and which can be rotated, via a drive motor, during the movement of said machine on the ground. A tray, placed in the rear part of the machine, allows to recover the dirt removed by the brush.

A cause du frottement répété sur le sol, la brosse finit, au cours du temps, par s'user si bien que son diamètre extérieur diminue progressivement entraînant de manière corollaire une diminution progressive de l'efficacité du nettoyage.Because of the repeated friction on the ground, the brush finishes, over time, to wear so that its outer diameter decreases progressively resulting in a corollary a gradual decrease in the cleaning efficiency.

Par ailleurs, la surface du sol à nettoyer n'est pas toujours plane ou présente des déformations entraînant une efficacité variable du nettoyage.Furthermore, the surface of the soil to be cleaned is not always flat or has deformations resulting in variable efficiency of cleaning.

Aussi, il est apparu utile de prévoir un déplacement en hauteur de la brosse afin de pouvoir la maintenir en appui sur la surface à nettoyer, lorsque ladite machine repose par ses roues sur la surface, pour compenser son usure ou un défaut de planéité du sol ou bien encore pour surmonter la présence d'une protubérance sur le sol.Also, it appeared useful to provide a height displacement of the brush so as to maintain it bears on the surface to be cleaned, when said machine rests with its wheels on the surface, to compensate for its wear or unevenness of the ground or even to overcome the presence of a protuberance on the ground.

Certaines machines de brossage sont ainsi pourvues de dispositifs de réglage de la position verticale des roues permettant d'abaisser ou de relever les machines vis-à-vis du sol et par conséquent de régler la distance séparant l'axe de rotation des brosses par rapport au sol.Some brushing machines are thus provided with devices for adjusting the vertical position of the wheels making it possible to lower or raise the machines towards the ground and consequently to adjust the distance separating the axis of rotation of the brushes relative to on the ground.

D'autres machines sont, dans le même but, pourvues de dispositifs de réglage en hauteur de la position de l'axe des brosses vis-à-vis du châssis de la machine, par exemple par l'intermédiaire de manivelles de réglage.Other machines are, for the same purpose, provided with adjusting devices in height of the position of the axis of the brushes vis-à-vis the frame of the machine, for example by means of adjusting cranks.

D'autres machines enfin sont, dans le but d'adapter automatiquement la position en hauteur de leur brosse vis-à-vis du sol, pourvues de dispositifs de compensation. Une telle machine de brossage peut ainsi comporter .un berceau, monté en étant articulé sur le châssis de la machine pour supporter de manière flottante, à l'encontre d'un ressort, la brosse rotative. La machine de brossage peut encore, comme cela est décrit dans le document EP-A-1 152 089 , comprendre un bras articulé sur le châssis de la machine et qui supporte à son extrémité libre l'axe de la brosse entraînée par un moteur électrique. Un vérin électrique, assisté par un dispositif à ressort, est monté sur la machine de manière à pouvoir modifier l'inclinaison du bras et par conséquent la position en hauteur de la brosse par rapport au sol sur laquelle la machine repose.Finally, other machines are, in order to automatically adjust the height position of their brush vis-à-vis the ground, provided with compensation devices. Such a brushing machine may thus comprise a cradle mounted to be hinged to the frame of the machine for floatingly supporting the rotating brush against a spring. The brushing machine can still, as described in the document EP-A-1 152 089 , comprise an articulated arm on the frame of the machine and which supports at its free end the axis of the brush driven by an electric motor. An electric jack, assisted by a spring device, is mounted on the machine so as to change the inclination of the arm and therefore the height position of the brush relative to the ground on which the machine rests.

Un capteur de la consommation de courant du moteur électrique d'entraînement de la brosse ainsi qu'une unité de commande sont prévus dans la machine pour commander le fonctionnement du vérin électrique apte à déplacer le bras articulé. Lorsque l'intensité instantanée du courant consommé par le moteur électrique est comprise dans un intervalle prédéterminé, seul le dispositif à ressort agit pour appliquer une force d'appui sur ladite brosse. Lorsque cette intensité est située en dehors de l'intervalle prédéterminé, l'unité de commande de la machine commande le fonctionnement du vérin électrique de manière à ce qu'il puisse abaisser la brosse ou la relever.A sensor of the current consumption of the electric motor for driving the brush and a control unit are provided in the machine to control the operation of the electric jack adapted to move the articulated arm. When the instantaneous intensity of the current consumed by the electric motor is within a predetermined range, only the spring device acts to apply a pressing force on said brush. When this intensity is outside the predetermined range, the control unit of the machine controls the operation of the electric cylinder so that it can lower the brush or raise it.

Bien que le dispositif de compensation de cette machine puisse être en mesure de soulever et d'abaisser la brosse de manière automatique, la force exercée par le dispositif à ressort sur la brosse n'est pas constante sur la course du dispositif, si bien que l'efficacité du nettoyage n'est pas constante. Par ailleurs, on note une réactivité brutale du mouvement du bras articulé engendrée par le fonctionnement du vérin électrique fonctionnant par impulsions.Although the compensation device of this machine may be able to raise and lower the brush automatically, the force exerted by the spring device on the brush is not constant over the stroke of the device, so that the cleaning efficiency is not constant. Furthermore, there is a sudden reactivity of the movement of the articulated arm generated by the operation of the electric actuator operating by pulses.

Le but de l'invention est donc de proposer une machine de brossage dont la brosse puisse être appliquée sur le sol à nettoyer suivant un effort constant quelque soit son degré d'usure ou quelque soit le relief de la surface à nettoyer.The object of the invention is therefore to provide a brushing machine whose brush can be applied to the floor to be cleaned at a constant effort regardless of its degree of wear or whatever the relief of the surface to be cleaned.

A cet effet, est proposée une machine de brossage destinée à être déplacée sur une surface pour la nettoyer, la machine comprenant une paire de flasques montés de manière articulée sur ladite machine et entre lesquels est montée une brosse rotative de nettoyage apte à être entraînée en rotation par l'intermédiaire d'un moteur hydraulique, les flasques étant mus par l'intermédiaire d'au moins un vérin hydraulique apte à modifier la position de la brosse rotative par rapport à la machine, ladite machine étant remarquable en ce que le circuit d'échappement du moteur hydraulique est raccordé respectivement aux chambres amont et aval dudit ou de chaque vérin hydraulique de manière à ce que ledit ou chaque vérin hydraulique puisse appliquer la brosse rotative sur la surface à nettoyer en exerçant sur elle une force d'intensité constante dans une plage particulière de pression mesurée dans le circuit d'admission du moteur hydraulique.For this purpose, there is provided a brushing machine intended to be moved on a surface for cleaning, the machine comprising a pair of flanges hingedly mounted on said machine and between which is mounted a rotary cleaning brush adapted to be driven into rotation by means of a hydraulic motor, the flanges being driven by means of at least one hydraulic jack adapted to modify the position of the rotary brush relative to the machine, said machine being remarkable in that the circuit of the hydraulic motor is connected respectively to the upstream and downstream chambers of said or each hydraulic cylinder so that said or each hydraulic jack can apply the rotating brush on the surface to be cleaned by exerting on it a force of constant intensity in a particular range of pressure measured in the intake circuit of the hydraulic motor.

Ainsi, la brosse rotative peut suivre automatiquement et de manière souple le relief de la surface à nettoyer lors du déplacement de la machine de brossage sur ladite surface. L'efficacité du nettoyage de la surface est accrue et l'usure de la brosse est réduite comparativement aux prestations offertes par les machines de brossage connues. La machine s'adapte automatiquement, lors de son fonctionnement, au diamètre de la brosse qu'elle utilise ou à son degré d'usure, ainsi qu'aux aspérités du terrain.Thus, the rotating brush can follow automatically and flexibly the relief of the surface to be cleaned during the movement of the brushing machine on said surface. The surface cleaning efficiency is increased and the wear of the brush is reduced compared to the services provided by known brushing machines. The machine adapts automatically, during its operation, to the diameter of the brush that it uses or to its degree of wear, as well as to the asperities of the ground.

Selon une caractéristique additionnelle de l'invention, un distributeur est raccordé sur le circuit d'alimentation de la chambre aval dudit ou de chaque vérin hydraulique, le distributeur étant pourvu d'un pré-actionneur à pilotage à seuil de pression de fluide qui est raccordé au circuit d'admission du moteur hydraulique de manière à ce que l'élévation de la pression dans le circuit d'admission de la pompe hydraulique au-delà d'un seuil déterminé puisse commander le pilotage du distributeur afin que la chambre aval dudit ou de chaque vérin hydraulique puisse être mise en communication avec le circuit d'admission du moteur hydraulique pour remonter la brosse rotative.According to an additional characteristic of the invention, a distributor is connected to the feed circuit of the downstream chamber of said or each hydraulic cylinder, the distributor being provided with a pre-actuator with a threshold control. fluid pressure which is connected to the intake circuit of the hydraulic motor so that the elevation of the pressure in the intake circuit of the hydraulic pump beyond a determined threshold can control the piloting of the distributor so as to that the downstream chamber of said or each hydraulic cylinder can be placed in communication with the intake circuit of the hydraulic motor to raise the rotating brush.

La brosse est ainsi positionnée automatiquement dans une position de dégagement lorsqu'elle rencontre un obstacle ou lorsqu'elle est trop sollicitée.The brush is thus automatically positioned in a release position when it encounters an obstacle or when it is overloaded.

Avantageusement, un moyen de réglage est prévu sur le pré-actionneur pour modifier le seuil de pression provoquant son déclenchement.Advantageously, an adjustment means is provided on the pre-actuator to modify the pressure threshold causing its triggering.

Selon une caractéristique additionnelle de l'invention, une alarme est associée au déclenchement du pré-actionneur permettant ainsi d'avertir l'opérateur utilisant la machine qu'un problème de surcharge est survenu dans le fonctionnement de la brosse.According to an additional feature of the invention, an alarm is associated with the triggering of the pre-actuator thus making it possible to warn the operator using the machine that an overload problem has occurred in the operation of the brush.

Avantageusement le distributeur est un distributeur proportionnel.Advantageously the distributor is a proportional distributor.

Selon une caractéristique additionnelle de l'invention, la machine de brossage est pourvue d'un organe de commande, situé dans la cabine d'un engin de manoeuvre de celle-ci, et qui permet d'agir sur la pression de fonctionnement dudit ou de chaque vérin hydraulique. On peut, de la sorte, agir sur la pression d'application de la brosse sur la surface à nettoyer.According to an additional feature of the invention, the brushing machine is provided with a control member, located in the cabin of an engine for maneuvering it, and which makes it possible to act on the operating pressure of said or of each hydraulic cylinder. In this way, it is possible to act on the application pressure of the brush on the surface to be cleaned.

Selon une caractéristique additionnelle de l'invention, la machine comprend deux parties articulées l'une par rapport à l'autre, la première partie incluant la brosse rotative, la seconde partie incluant un dispositif de collecte des salissures, un moyen de manoeuvre étant prévu pour déplacer la première partie relativement à la seconde partie entre une position de travail de la machine de brossage où la brosse rotative est apte à projeter des salissures dans le dispositif de collecte et une position d'ouverture de ladite machine permettant la vidange du dispositif de collecte. La manoeuvre de la machine de brossage dans l'une ou l'autre de ces positions est ainsi assistée.According to an additional feature of the invention, the machine comprises two parts articulated with respect to each other, the first part including the rotary brush, the second part including a soil collection device, a maneuvering means being provided for moving the first portion relative to the second portion between a working position of the brushing machine where the rotating brush is adapted to spray dirt into the collection device and an opening position of said machine for draining the collection. The operation of the brushing machine in one or other of these positions is thus assisted.

Selon une caractéristique additionnelle de l'invention, la machine est pourvue d'un dispositif limiteur de torsion destiné à limiter le décalage angulaire entre les deux flasques lors du fonctionnement de ladite machine de brossage.According to an additional feature of the invention, the machine is provided with a torsion limiting device intended to limit the angular offset between the two flanges during operation of said brushing machine.

Selon une caractéristique additionnelle de l'invention, le dispositif limiteur de torsion est constitué d'une paire de roues dentées engrenant respectivement sur des crémaillères réalisées sur l'un des bords des flasques et qui sont réunies par l'intermédiaire d'un arbre de torsion.According to an additional characteristic of the invention, the torsion limiting device consists of a pair of toothed wheels meshing respectively with racks made on one of the edges of the flanges and which are connected by means of a torsion shaft.

Selon une caractéristique additionnelle de l'invention, la machine est pourvue d'organes de manutention destinés à permettre à un engin terrestre automoteur de la pousser, de la tirer ou de la soulever.According to an additional feature of the invention, the machine is provided with handling devices intended to allow a self-propelled land vehicle to push, pull or lift.

Selon une caractéristique additionnelle de l'invention, la brosse rotative est pourvue d'un moyeu creux fixé par ses extrémités aux flasques par l'intermédiaire de platines. Le moyeu creux présente avantageusement une section polygonale et autour duquel est enfilée la brosse rotative et dont au moins un sommet comporte une rainure apte à recevoir un ergot prévu dans un tube creux constitutif de la brosse rotative pour permettre son entraînement en rotation.According to an additional feature of the invention, the rotary brush is provided with a hollow hub fixed at its ends to the flanges by means of plates. The hollow hub advantageously has a polygonal section and around which is threaded the rotating brush and at least one vertex has a groove adapted to receive a lug provided in a hollow tube constituting the rotating brush to allow its driving in rotation.

Avantageusement, le moyeu creux est pourvu intérieurement, et à une extrémité, d'un arbre tenu par un moyen de roulement, monté dans un manchon d'une platine, son autre extrémité étant pourvue d'une noix d'entraînement dans laquelle est monté un arbre cannelé du moteur hydraulique fixé dans un manchon de l'autre platine pour l'entraînement en rotation de la brosse rotative, l'arbre traversant le moyeu creux pour que son autre extrémité puisse être logée dans la noix d'entraînement.Advantageously, the hollow hub is internally provided, and at one end, a shaft held by a rolling means, mounted in a sleeve of a plate, its other end being provided with a drive nut in which is mounted a splined shaft of the hydraulic motor fixed in a sleeve of the other plate for rotating the rotating brush, the shaft passing through the hollow hub so that its other end can be accommodated in the drive nut.

Selon une caractéristique additionnelle de l'invention, la machine est pourvue d'un premier racleur monté entre la brosse rotative et le dispositif de collecte pour améliorer la séparation des salissures retenues sur la brosse rotative afin de permettre leur éjection dans le dispositif de collecte. Le racleur optimise également le travail de raclage de la brosse en évitant la formation de tas lorsque la brosse est relevée.According to an additional feature of the invention, the machine is provided with a first scraper mounted between the rotating brush and the collection device to improve the separation of dirt retained on the rotating brush to allow their ejection into the collection device. The scraper also optimizes the scraping of the brush by preventing pile formation when the brush is raised.

Avantageusement, le premier racleur est constitué d'une lame rectangulaire fixée entre une paire de plaques et dont une arête peut être positionnée de manière à tangenter les poils de la brosse rotative.Advantageously, the first scraper consists of a rectangular blade fixed between a pair of plates and one edge can be positioned so as to tangentially the bristles of the rotating brush.

Selon une caractéristique additionnelle de l'invention, la machine est pourvue d'un second racleur disposé à l'intérieur de la machine de brossage pour permettre le nettoyage automatique de la brosse rotative lorsque la machine de brossage est soulevée par l'engin et que la brosse rotative est entraînée en rotation par son moteur d'entraînement.According to an additional feature of the invention, the machine is provided with a second scraper disposed inside the brushing machine to allow the automatic cleaning of the rotating brush when the brushing machine is lifted by the machine and that the rotating brush is rotated by its drive motor.

Selon une caractéristique additionnelle de l'invention, la machine est pourvue d'au moins une brosse additionnelle.According to an additional feature of the invention, the machine is provided with at least one additional brush.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description suivante d'un exemple de réalisation, ladite description étant faite en relation avec les dessins joints, parmi lesquels:

  • la Fig. 1 représente une vue en perspective d'une machine de brossage selon l'invention,
  • la Fig. 2 représente une vue latérale d'une machine de brossage selon l'invention,
  • la Fig. 3 représente une vue en coupe rabattue de la machine de brossage selon l'invention,
  • la Fig. 4 représente une vue latérale en coupe d'une machine de brossage selon l'invention,
  • la Fig. 5 représente un schéma hydraulique de raccordement des organes de manoeuvre et d'entraînement d'une brosse d'une machine de brossage selon l'invention,
  • la Fig. 6 représente une vue latérale en coupe d'une machine de brossage en cours de travail selon l'invention,
  • la Fig. 7 représente une vue latérale en coupe d'une machine de brossage dont la brosse rotative est disposée dans une position de dégagement selon l'invention,
  • la Fig. 8 représente une vue latérale en coupe d'une machine de brossage disposée dans une position d'ouverture selon l'invention, et
  • la Fig. 9 représente un schéma illustrant la relation existant entre l'effort exercé par des organes de manoeuvre d'une brosse d'une machine de brossage et une pression de fonctionnement d'un moteur hydraulique d'entraînement de ladite brosse selon l'invention.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being given in relation to the attached drawings, among which:
  • the Fig. 1 represents a perspective view of a brushing machine according to the invention,
  • the Fig. 2 represents a side view of a brushing machine according to the invention,
  • the Fig. 3 represents a folded sectional view of the brushing machine according to the invention,
  • the Fig. 4 represents a sectional side view of a brushing machine according to the invention,
  • the Fig. 5 represents a hydraulic diagram for connecting the operating and driving members of a brush of a brushing machine according to the invention,
  • the Fig. 6 represents a sectional side view of a brushing machine during work according to the invention,
  • the Fig. 7 represents a sectional side view of a brushing machine whose rotating brush is arranged in a release position according to the invention,
  • the Fig. 8 represents a sectional side view of a brushing machine disposed in an open position according to the invention, and
  • the Fig. 9 represents a diagram illustrating the relationship between the force exerted by the operating members of a brush of a brushing machine and an operating pressure of a hydraulic motor driving said brush according to the invention.

La machine de brossage 100 représentée aux Figs. 1 et 2 est destinée à être emmenée par un engin terrestre automoteur tel qu'un tracteur agricole sur une surface à nettoyer, par exemple une chaussée, pour retirer les salissures susceptibles de s'être déposées sur ladite surface. Elle est pourvue d'un châssis 110 supporté par des roues 112 aptes à permettre le déplacement de la machine 100 sur ladite surface par l'engin.The brushing machine 100 shown in Figs. 1 and 2 is intended to be driven by a self-propelled land vehicle such as an agricultural tractor on a surface to be cleaned, for example a roadway, to remove soil that may have deposited on said surface. It is provided with a frame 110 supported by wheels 112 capable of allowing the machine 100 to move on said surface by the machine.

Le châssis 110 est constitué de deux parties A et B articulées l'une par rapport à l'autre par l'intermédiaire d'une articulation 114. La partie A comprend principalement une brosse rotative 130 chargée de retirer par frottement des salissures présentes sur une surface à nettoyer, alors que la partie B comprend principalement un dispositif de collecte des salissures 150 tel qu'un bac.The chassis 110 consists of two parts A and B articulated to each other by means of a hinge 114. The part A mainly comprises a rotary brush 130 which is designed to remove frictionally dirt on a surface to be cleaned, while the part B mainly comprises a dirt collection device 150 such as a tray.

Les deux parties A et B sont mobiles, sous l'action d'un moyen de manoeuvre 120, entre une position de travail de la machine de brossage 100 où la partie A communique directement avec la partie B, comme cela apparaît à la Fig.4, de manière à ce que la brosse rotative 130 puisse, lors de sa rotation, projeter les salissures dans le bac 150, et une position d'ouverture de ladite machine visible à la Fig. 8 permettant la vidange du bac 150, le nettoyage interne de la machine de brossage 100. Le moyen de manoeuvre 120 est avantageusement constitué aux Figs. 1 et 2 par une paire de vérins hydrauliques prenant prise sur des articulations prévues respectivement sur les deux parties A et B.The two parts A and B are movable, under the action of an operating means 120, between a working position of the brushing machine 100 where the part A communicates directly with the part B, as it appears in FIG. Fig.4 , so that the rotating brush 130 can, during its rotation, projecting the dirt in the tray 150, and an open position of said machine visible to the Fig. 8 allowing the emptying of the tray 150, the internal cleaning of the brushing machine 100. The operating means 120 is advantageously constituted to the Figs. 1 and 2 by a pair of hydraulic cylinders taking on joints provided respectively on the two parts A and B.

A la Fig. 4, la partie A est ainsi constituée de deux flancs latéraux 116 réunis par une paroi supérieure 117 et entre lesquels est montée la brosse rotative 130. La partie B est également constituée de deux flancs latéraux 118 réunis par un fond 119, les flancs latéraux 118 ou le fond 119 constituant le bac 150. Les parties A et B sont ouvertes au niveau de leur zone de jonction de manière à ce que les salissures récupérées par la brosse rotative 130 puissent être transférées dans le bac 150 de la partie B lorsque les deux parties A et B sont positionnées dans la position de travail de la machine de brossage 100.To the Fig. 4 Part A thus consists of two lateral flanks 116 joined by an upper wall 117 and between which the rotary brush 130 is mounted. Part B also consists of two lateral flanks 118 joined by a bottom 119, the lateral flanks 118 or the bottom 119 constituting the tank 150. The parts A and B are open at their junction zone so that the dirt recovered by the rotary brush 130 can be transferred to the tank 150 of the part B when the two parts A and B are positioned in the working position of the brushing machine 100.

Le châssis 110 comporte des organes de manutention 122, tels que des barres transversales disposées aux extrémités des parties A et/ou B, entre leurs flancs latéraux respectifs 116 et 118 pour permettre à l'engin de pousser ladite machine de brossage 100, de la tirer et éventuellement de la soulever de manière à ce qu'elle ne puisse plus toucher le sol afin de pouvoir la déplacer rapidement, pour vidanger son bac 150 ou la nettoyer intérieurement.The frame 110 comprises handling members 122, such as transverse bars arranged at the ends of the parts A and / or B, between their respective lateral sides 116 and 118 to allow the machine to push said brushing machine 100, the pull and possibly lift it so that it can not touch the ground so that it can be moved quickly, to empty the tank 150 or clean it internally.

Un berceau 124 permettant un accrochage à un engin pourvu de moyens de levage peut être associé de manière flottante à des organes de manutention 122 pour que l'engin puisse pousser ou tirer la machine de brossage 100 afin qu'elle puisse reposer sur le sol par ses roues 112 uniquement sous l'effet de sa propre masse. Le berceau 124 est conçu cependant pour permettre à l'engin de soulever la machine de brossage 100. Le berceau 124 comprend avantageusement un châssis 125 fixé sur deux organes de manutention 122 et traversé transversalement par deux barres montées flottantes dans des lumières 126 d'un jeu de plaques 127 adapté à être fixé sur l'engin.A cradle 124 allowing attachment to a machine provided with lifting means can be associated in a floating manner with the handling members 122 so that the machine can push or pull the brushing machine 100 so that it can rest on the ground by its wheels 112 only under the effect of its own mass. The cradle 124 is designed, however, to allow the machine to lift the brushing machine 100. The cradle 124 advantageously comprises a frame 125 attached to two handling members 122 and traversed transversely by two floating bars mounted in lights 126 of a set of plates 127 adapted to be fixed on the machine.

A la Fig. 2, une paire de flasques 160 est montée de manière articulée, par l'intermédiaire d'articulations 162 prévues respectivement sur les flancs 116 de la partie A, pour supporter à pivotement la brosse rotative 130. Les flasques 160 sont montés de préférence sur les faces extérieures des flancs 116 de la partie A, comme cela apparaît à cette Fig. 2.To the Fig. 2 a pair of flanges 160 is hingedly mounted by means of hinges 162 provided respectively on the flanks 116 of the part A, to pivotably support the rotary brush 130. The flanges 160 are preferably mounted on the faces. outer flanks 116 of part A, as shown in this Fig. 2 .

A la Fig. 3, la brosse rotative 130 est pourvue d'un moyeu creux 132 fixé par ses extrémités aux flasques 160 par l'intermédiaire de platines 180, 180'.To the Fig. 3 , the rotary brush 130 is provided with a hollow hub 132 fixed at its ends to the flanges 160 by means of plates 180, 180 '.

Chaque platine 180, 180' est constituée d'un manchon 182, 182' fixé contre un flasque 160 et monté dans une extrémité du moyeu creux 132 pour le supporter à rotation.Each plate 180, 180 'consists of a sleeve 182, 182' fixed against a flange 160 and mounted in one end of the hollow hub 132 to support rotation.

Le moyeu creux 132 est ainsi pourvu intérieurement, et à une extrémité, d'un arbre 184 tenu par un moyen de roulement R, tel qu'un roulement à billes, monté dans le manchon 182 de la platine 180, alors que son autre extrémité est pourvue d'une noix d'entraînement 186 dans laquelle est monté l'arbre cannelé d'un moyen d'entraînement 140 tel qu'un moteur hydraulique, fixé dans le manchon 182' de l'autre platine 180', pour l'entraînement en rotation de la brosse rotative 130. On remarquera que l'arbre 184 traverse le moyeu creux 132 pour que son autre extrémité puisse être logée dans la noix d'entraînement 186.The hollow hub 132 is thus provided internally, and at one end, with a shaft 184 held by a rolling means R, such as a ball bearing, mounted in the sleeve 182 of the plate 180, while its other end is provided with a drive nut 186 in which is mounted the spline shaft of a drive means 140 such as a hydraulic motor, fixed in the sleeve 182 'of the other plate 180', for the rotational drive of the rotary brush 130. It will be noted that the shaft 184 passes through the hollow hub 132 so that its other end can be housed in the drive nut 186.

Le moyeu creux 132 présente avantageusement une section polygonale, par exemple un hexagone, et autour duquel est enfilée la brosse rotative et dont au moins un sommet comporte une rainure 132 apte à recevoir un ergot 136 prévu dans un tube creux 138 constitutif de la brosse rotative 130.The hollow hub 132 advantageously has a polygonal section, for example a hexagon, and around which is threaded the rotating brush and at least one vertex has a groove 132 adapted to receive a lug 136 provided in a hollow tube 138 constituting the rotating brush 130.

Un moyen de manoeuvre 170, tel qu'une paire de vérins hydrauliques, est mis en oeuvre pour déplacer la brosse rotative 130 entre une position de travail où elle peut être mise en appui sur la surface à nettoyer comme cela est montré à la Fig. 2 et une position de dégagement où elle se trouve escamotée dans la partie A comme cela est montré à la Fig. 8. Aux Figs. 2 et 3, chaque vérin 170 est à cet effet monté de manière articulée, d'une part, sur une première articulation 172 prévue sur chaque flanc 116 et, d'autre part, sur une seconde articulation 174 prévue sur chaque flasque 160. On remarquera qu'à ces Figs., les articulations 172 sont communes à celles utilisées par les vérins hydrauliques du moyen de manoeuvre 120 pour ouvrir la machine de brossage 100.An operating means 170, such as a pair of hydraulic cylinders, is used to move the rotary brush 130 between a working position where it can be placed on the surface to be cleaned as shown in FIG. Fig. 2 and a release position where it is retracted into part A as shown in Fig. 8 . To the Figs. 2 and 3 each jack 170 is articulated to this effect, on the one hand, on a first articulation 172 provided on each sidewall 116 and, secondly, on a second articulation 174 provided on each flange 160. It will be noted that in these Figs., the joints 172 are common to those used by the hydraulic cylinders of the operating means 120 to open the brushing machine 100.

Grâce au montage indépendant des flasques 160, chaque vérin 170 peut agir de manière indépendante sur une extrémité du moyeu creux 132, si bien que la brosse rotative 130 peut être inclinée latéralement pour, par exemple, déloger des salissures déposées dans une ornière d'une route sur laquelle la machine de brossage est déplacée. Cependant, pour éviter des efforts de torsion susceptibles d'user prématurément les organes de maintien de la brosse, c'est-à-dire le roulement R, la noix d'entraînement 186, les paliers du moteur hydraulique 140, la machine de brossage 100 peut être pourvue d'un dispositif limiteur de torsion 200, représenté à la Fig. 2, et destiné à limiter le décalage angulaire entre les deux flasques 160 lors du fonctionnement de ladite machine de brossage 100. Le dispositif limiteur de torsion 200 est avantageusement constitué d'une paire de roues dentées 210 engrenant respectivement sur des crémaillères 212 réalisées sur l'un des bords des flasques 160 et qui sont réunies par l'intermédiaire d'un arbre de torsion 214 supporté par des paliers traversant les flancs latéraux 118 de la partie B. Le décalage angulaire des flasques 160 est ainsi limité par la torsion de l'arbre de torsion 214 lors du fonctionnement de la machine de brossage 100.Thanks to the independent mounting of the flanges 160, each jack 170 can act independently on one end of the hollow hub 132, so that the brush rotary 130 may be laterally inclined to, for example, dislodge soil deposited in a rut of a road on which the brushing machine is moved. However, to avoid twisting forces that may prematurely wear the brush holding members, that is to say, the bearing R, the drive nut 186, the bearings of the hydraulic motor 140, the brushing machine 100 may be provided with a torsion limiting device 200, shown at Fig. 2 , and intended to limit the angular offset between the two flanges 160 during operation of said brushing machine 100. The torsion limiting device 200 advantageously consists of a pair of gear wheels 210 meshing respectively on racks 212 made on the one of the edges of the flanges 160 and which are connected by means of a torsion shaft 214 supported by bearings passing through the lateral flanks 118 of the part B. The angular offset of the flanges 160 is thus limited by the torsion of the torsion shaft 214 during operation of the brushing machine 100.

Pour faciliter la séparation des salissures retenues sur la brosse rotative 130 et permettre ainsi leur éjection dans le bac 150, un premier racleur 230 visible à la Fig. 4, est monté entre la brosse rotative 130 et le bac 150.To facilitate the separation of dirt retained on the rotary brush 130 and thus allow their ejection into the tray 150, a first scraper 230 visible to the Fig. 4 , is mounted between the rotating brush 130 and the tray 150.

Il est constitué avantageusement d'une lame rectangulaire fixée entre une paire de plaques montées libres à pivotement suivant un axe parallèle à celui de la brosse rotative 130 en étant disposée dans la partie basse de la partie A. Le positionnement de la lame est tel qu'une de ses arêtes peut être disposée de manière à ce qu'elle puisse tangenter les poils de la brosse rotative 130. Un dispositif de bridage, tel que des boulons, permet de brider en position la paire de plaques contre les flasques 116.It advantageously consists of a rectangular blade fixed between a pair of plates mounted free to pivot along an axis parallel to that of the rotary brush 130 being disposed in the lower part of the part A. The positioning of the blade is such that one of its edges can be arranged so that it can tangentially the bristles of the rotary brush 130. A clamping device, such as bolts, can clamp the pair of plates against the flanges 116 in position.

Un second racleur 240 est disposé à l'intérieur de la partie A, dans sa partie basse et frontale, pour permettre le nettoyage automatique de la brosse rotative 130 lorsque la machine de brossage 100 est soulevée du sol par l'engin et que la brosse rotative 130 est entraînée en rotation par son moteur d'entraînement 140. Le second racleur 240 optimise aussi le fonctionnement de la brosse rotative 130 et permet également de limiter la formation d'un tas sous la machine après l'arrêt du fonctionnement de la brosse. Le second racleur 240 est constitué à cette Fig. 4 d'une lame rectangulaire disposée parallèlement à l'axe de la brosse rotative 130.A second scraper 240 is disposed inside the part A, in its lower and front part, to allow the automatic cleaning of the rotary brush 130 when the brushing machine 100 is lifted from the ground by the machine and the brush The second scraper 240 also optimizes the operation of the rotary brush 130 and also makes it possible to limit the formation of a pile under the machine after stopping the operation of the brush. . The second scraper 240 is made up of Fig. 4 a rectangular blade disposed parallel to the axis of the rotary brush 130.

La machine de brossage 100 peut être pourvue d'au moins une brosse additionnelle 250, entraînée avantageusement par un moteur hydraulique, et fixée sur un flanc 116 de la partie A. Des moyens de positionnement, tels qu'une pluralité d'orifices permettent de brider ladite ou chaque brosse additionnelle suivant une position convenable, par exemple pour dégager des salissures de bordures de trottoir.The brushing machine 100 may be provided with at least one additional brush 250, advantageously driven by a hydraulic motor, and fixed on a flank 116 of the part A. Positioning means, such as a plurality of orifices can clamp said or each additional brush in a suitable position, for example to clear curbs of curbs.

L'ensemble des moteurs hydrauliques et l'ensemble des vérins hydrauliques de la machine de brossage 100 sont destinés à être raccordés pour le fonctionnement de ladite machine au circuit hydraulique de l'engin par l'intermédiaire de flexibles non représentés.The set of hydraulic motors and all the hydraulic cylinders of the brushing machine 100 are intended to be connected for the operation of said machine to the hydraulic circuit of the machine by means of hoses not shown.

On a représenté à la Fig. 5 le schéma hydraulique de raccordement des organes de manoeuvre et d'entraînement d'une brosse d'une machine de brossage. Un distributeur T1, par exemple un distributeur de type 4/2, est prévu sur un engin N de manutention de la machine de brossage pour distribuer un fluide hydraulique sous pression à différents organes hydrauliques de ladite machine de brossage.We have shown Fig. 5 the hydraulic diagram for connecting the operating and driving members of a brush of a brushing machine. A distributor T1, for example a 4/2 type distributor, is provided on a machine N handling the brushing machine for dispensing hydraulic fluid under pressure to different hydraulic members of said brushing machine.

L'admission et l'échappement du moteur hydraulique 140 sont raccordés respectivement aux ports de sortie du distributeur T1. Ainsi, lorsque le distributeur T1 est actionné par un opérateur, un moteur hydraulique M de l'engin N alimente le moteur hydraulique 140 qui entraîne alors la brosse rotative 130.The intake and the exhaust of the hydraulic motor 140 are respectively connected to the output ports of the distributor T1. Thus, when the distributor T1 is actuated by an operator, a hydraulic motor M of the machine N feeds the hydraulic motor 140 which then drives the rotary brush 130.

Un circuit de dérivation branché sur le circuit d'échappement du moteur hydraulique 140 est raccordé, d'une part, aux chambres amont des vérins hydrauliques 170 et, d'autre part, aux chambres aval desdits vérins, par exemple, par l'intermédiaire d'un second distributeur T2, tel qu'un distributeur de type 3/2, si bien que la pression résiduelle du circuit d'échappement de la pompe hydraulique 140 est appliquée aux chambres amont et aval des vérins hydrauliques 170, c'est-à-dire sur les deux faces des pistons des vérins hydrauliques 170.A branch circuit connected to the exhaust circuit of the hydraulic motor 140 is connected, on the one hand, to the upstream chambers of the hydraulic cylinders 170 and, on the other hand, to the downstream chambers of said cylinders, for example, via of a second distributor T2, such as a distributor type 3/2, so that the residual pressure of the exhaust circuit of the hydraulic pump 140 is applied to the upstream and downstream chambers of the hydraulic cylinders 170, that is to say that is to say on both sides of the pistons hydraulic cylinders 170.

Les surfaces exposées à la pression du fluide amont et aval des pistons étant différentes du fait de la présence de tiges de manoeuvre montées sur leurs faces aval, les vérins hydrauliques 170 peuvent ainsi appliquer latéralement sur ladite brosse rotative 130 des forces d'intensité constantes. Dans ces conditions, lorsque la machine de brossage est déplacée suivant une trajectoire indiquée par la flèche C sur une surface non parfaitement plane comme cela apparaît à la Fig. 6, la brosse rotative 130 dont le mouvement de rotation est indiqué par la flèche D suit automatiquement et instantanément le profil de la surface qu'elle balaie, suivant en cela le mouvement indiqué par la flèche E. Par ailleurs, le fonctionnement de la machine de brossage s'adapte automatiquement à la taille de brosse rotative qui est montée ou à son degré d'usure.Since the surfaces exposed to the pressure of the upstream and downstream fluid of the pistons are different because of the presence of maneuvering rods mounted on their downstream faces, the hydraulic cylinders 170 can thus apply laterally to said rotary brush 130 constant intensity forces. Under these conditions, when the brushing machine is moved in a path indicated by the arrow C on a non-perfectly flat surface as it appears in FIG. Fig. 6 , the rotary brush 130 whose rotational movement is indicated by the arrow D follows automatically and instantly the profile of the surface that it sweeps, following the movement indicated by the arrow E. Moreover, the operation of the machine of Brushing automatically adapts to the rotating brush size that is mounted or its degree of wear.

On remarquera qu'à la Fig. 5, le distributeur T2 est pourvu d'un pré-actionneur P à pilotage à seuil de pression de fluide qui est raccordé au circuit d'admission du moteur hydraulique 140. Par cette construction du circuit hydraulique, une augmentation anormale de la pression, dépassant un seuil déterminé, dans le circuit d'admission du moteur hydraulique 140, par exemple consécutive à un bourrage de la brosse 130 ou lorsque ladite brosse rencontre un obstacle, provoque le pilotage du pré-actionneur P qui commande de la sorte le distributeur T1. Celui-ci raccorde alors les chambres aval des vérins hydrauliques 170 au circuit d'admission du moteur hydraulique 140.It will be noted that Fig. 5 , the distributor T2 is provided with a pre-actuator P controlled fluid pressure threshold which is connected to the intake circuit of the hydraulic motor 140. By this construction of the hydraulic circuit, an abnormal increase in pressure, exceeding a threshold determined in the hydraulic motor intake circuit 140, for example following a jamming of the brush 130 or when said brush encounters an obstacle, causes the piloting of the pre-actuator P which thus controls the distributor T1. It then connects the downstream chambers of the hydraulic cylinders 170 to the intake circuit of the hydraulic motor 140.

La pression d'admission de la pompe hydraulique 140 étant toujours nettement supérieure à celle de la pression d'échappement, les tiges des vérins remontent, entraînant alors la brosse rotative 130 à l'intérieur de la partie A comme cela apparaît à la Fig. 7. A cette Fig., la brosse rotative 130 remonte dans une position de dégagement, suivant en cela la direction indiquée par la flèche E, consécutivement à sa rencontre avec un obstacle O.As the intake pressure of the hydraulic pump 140 is still substantially greater than that of the exhaust pressure, the rods of the cylinders rise, thus driving the rotary brush 130 inside the part A as it appears in FIG. Fig. 7 . In this Fig., The rotating brush 130 rises in a release position, following the direction indicated by the arrow E, following its meeting with an obstacle O.

Le déclenchement du distributeur T2 par son pré-actionneur P est exploité pour déclencher une alarme, par exemple une alarme visuelle, afin d'informer l'opérateur d'un problème lié au fonctionnement de la brosse rotative 130.The triggering of the distributor T2 by its pre-actuator P is used to trigger an alarm, for example a visual alarm, to inform the operator of a problem related to the operation of the rotary brush 130.

Le seuil de pression auquel le déclenchement du pré-actionneur P intervient peut être modifié, par exemple par l'intermédiaire d'une vis de réglage prévue sur le pré-actionneur P ou par remplacement de ressorts de tarage.The pressure threshold at which the activation of the pre-actuator P occurs can be modified, for example by means of a set screw provided on the pre-actuator P or by the replacement of setting springs.

Lorsque la pression d'admission descend au-dessous du seuil déterminé, le pré-actionneur P commande en sens inverse le distributeur T2, si bien que la brosse 130 est à nouveau appliquée par les vérins hydrauliques 170 sur la surface à nettoyerWhen the intake pressure falls below the determined threshold, the pre-actuator P in the opposite direction the distributor T2, so that the brush 130 is again applied by the hydraulic cylinders 170 on the surface to be cleaned

Dans une variante de réalisation, non représentée, le distributeur T2 est un distributeur proportionnel.In an alternative embodiment, not shown, the distributor T2 is a proportional distributor.

Pour illustrer ces propos concernant le fonctionnement hydraulique des organes de brossage, on a représenté en abscisse, sur le schéma visible sur la Fig. 9, la pression d'admission R mesurée dans le circuit d'admission du moteur d'entraînement en rotation de la brosse rotative et en ordonnée l'effort F fournit par le moyen de manoeuvre de la brosse rotative. On constate que pour une plage G de pression particulière, l'effort fournit par le moyen de manoeuvre est sensiblement constant alors qu'il est décroissant en deçà de cette plage et croissant au-delà de cette plage.To illustrate these remarks concerning the hydraulic operation of the brushing members, there is shown on the abscissa, in the diagram visible on the Fig. 9 , the intake pressure R measured in the intake circuit of the rotary drive motor of the rotary brush and the ordinate the force F provided by the operating means of the rotary brush. It can be seen that for a particular pressure range G, the force supplied by the operating means is substantially constant while it decreases below this range and increases beyond this range.

La machine de brossage est avantageusement pourvue d'un organe de commande, situé dans la cabine de l'engin de manoeuvre, et qui permet d'agir sur la pression de fonctionnement dudit ou de chaque vérin hydraulique de manoeuvre de la brosse rotative. On peut, de la sorte, agir sur la pression d'application de la brosse sur la surface à nettoyer pour l'adapter à la nature de ladite surface.The brushing machine is advantageously provided with a control member, located in the cab of the operating machine, and which makes it possible to act on the operating pressure of said or each hydraulic cylinder for operating the rotary brush. In this way, it is possible to act on the application pressure of the brush on the surface to be cleaned in order to adapt it to the nature of said surface.

Le fonctionnement de la machine de brossage va maintenant être décrit. La machine de brossage est attelée à un engin et les flexibles sont raccordés au circuit hydraulique de l'engin. La machine de brossage est ensuite emmenée par l'engin sur une surface à nettoyer en étant éventuellement soulevée du sol pour son transport. L'opérateur manoeuvre alors le distributeur T1, ce qui conduit la brosse rotative 130 à être entraînée en rotation, alors que les vérins hydrauliques 170 appliquent ladite brosse sur le sol en exerçant sur elle une force constante. Lors du déplacement de la machine de brossage 100 sur la surface à nettoyer, la brosse rotative 130 enlève les salissures de la surface puis les projette dans le bac 150, aidée en cela par le racleur 230. Par ailleurs, la brosse rotative 130 se soulève et s'abaisse automatiquement et instantanément pour suivre le relief de ladite surface. Outre son mouvement vertical, la brosse 130 peut aussi être inclinée latéralement pour s'adapter aux déformations de bords de ladite surface.The operation of the brushing machine will now be described. The brushing machine is coupled to a machine and the hoses are connected to the hydraulic circuit of the machine. The brushing machine is then taken by the machine on a surface to be cleaned possibly raised from the ground for transport. The operator then operates the distributor T1, which causes the rotary brush 130 to be rotated, while the hydraulic cylinders 170 apply said brush on the ground by exerting a constant force on it. During the movement of the brushing machine 100 on the surface to be cleaned, the rotary brush 130 removes dirt from the surface and then projects them into the tank 150, assisted by the scraper 230. Moreover, the rotary brush 130 rises and lowers automatically and instantly to follow the relief of said surface. In addition to its vertical movement, the brush 130 can also be laterally inclined to adapt to the edge deformations of said surface.

Un travail trop important de la brosse rotative 130 engendre automatiquement son relevage dans la machine de brossage 100 et l'opérateur peut en être averti. Si la cause du travail excédentaire de la brosse est un obstacle, la brosse se relève puis reprend sa position de travail après le franchissement de l'obstacle.Too much work of the rotary brush 130 automatically engenders its raising in the brushing machine 100 and the operator can be warned. If the cause of the excess work of the brush is an obstacle, the brush gets up and then resumes its working position after crossing the obstacle.

Lorsque le bac 150 est rempli de détritus, l'opérateur commande l'interruption du fonctionnement de la brosse 130 puis déplace la machine de brossage 100 vers une aire de déchargement pour vidanger le bac 150. Il commande à cet effet le fonctionnement des vérins hydrauliques 120 pour déplacer les parties A et B dans la position d'ouverture de la machine de brossage 100. Dans cette position d'ouverture, les vérins hydrauliques 170 repoussent la brosse vers le second racleur 240 qui nettoie ainsi ladite brosse pendant sa rotation.When the tray 150 is filled with detritus, the operator controls the interruption of the operation of the brush 130 and then moves the brushing machine 100 to an unloading area to empty the tray 150. It controls for this purpose the operation of the hydraulic cylinders 120 to move the parts A and B into the open position of the brushing machine 100. In this open position, the hydraulic cylinders 170 push the brush towards the second scraper 240 which thus cleans said brush during its rotation.

Dans une variante de réalisation, non représentée, un bloc diviseur de débits hydraulique peut être raccordé aux vérins hydrauliques, en remplacement du dispositif limiteur de torsion, pour limiter le décalage angulaire entre les deux flasques 160 lors du fonctionnement de ladite machine de brossage 100.In an alternative embodiment, not shown, a hydraulic flow divider block can be connected to the hydraulic cylinders, replacing the torsion limiting device, to limit the angular offset between the two flanges 160 during operation of said brushing machine 100.

La machine de brossage de l'invention autorise une adaptation automatique de la position de sa brosse sur la surface à nettoyer. Elle adapte automatiquement la position de la brosse en fonction de sa taille ou de son degré d'usure.The brushing machine of the invention allows automatic adaptation of the position of its brush on the surface to be cleaned. It automatically adjusts the position of the brush according to its size or degree of wear.

La grande réactivité du mouvement de la brosse rotative permet d'accroître significativement l'efficacité du nettoyage de la machine de brossage et également de réduire l'usure de ladite brosse.The high reactivity of the rotary brush movement significantly increases the cleaning efficiency of the brushing machine and also reduces the wear of said brush.

En cas de surcharge de travail de la brosse rotative, celle-ci se relève automatiquement dans une position de dégagement et l'opérateur en est averti.In case of overload of the rotating brush, it automatically rises to a release position and the operator is warned.

Le réglage de la pression d'appui de la brosse sur la surface à nettoyer peut être ajusté en fonction de la nature du revêtement depuis un organe de commande installé dans la cabine de l'engin.The adjustment of the pressure of the brush on the surface to be cleaned can be adjusted depending on the nature of the coating from a control member installed in the cabin of the machine.

Claims (16)

  1. Brushing machine (100) intended to be moved over a surface in order to clean it, comprising a pair of cheeks (160) mounted in articulated manner on said machine, between which is mounted a rotary cleaning brush (130) adapted to be rotationally driven via a hydraulic motor (140), the cheeks (160) being moved by means of at least one hydraulic jack (170) adapted to modify the position of the rotary brush (130) relative to said machine, characterised in that the exhaust circuit (140) of the hydraulic motor (140) is connected to the upstream and downstream chambers of the or each hydraulic jack (170) respectively, so that the or each hydraulic jack (170) is able to apply the rotary brush (130) to the surface to be cleaned, by exerting a force of constant intensity thereon, within a particular range (G) of pressure (R) measured in the intake circuit of the hydraulic motor (140).
  2. Brushing machine (100) according to claim 1, characterised in that a distributor (T2) is connected to the supply circuit of the downstream chamber of the or each hydraulic jack (170), the distributor (T2) being provided with a control preactuator (P) with a fluid pressure threshold which is connected to the intake circuit of the hydraulic motor (140) so that the rise in pressure in the intake circuit of the hydraulic motor (140) beyond a specified threshold is able to command the control of the distributor (T2) to enable the downstream chamber of the or each hydraulic jack (170) to be brought into communication with the intake circuit of the hydraulic motor (140) to reset the rotary brush (130).
  3. Brushing machine (100) according to claim 2, characterised in that a regulating means is provided on the pre-actuator (P) for modifying the threshold pressure that will cause it to be triggered.
  4. Brushing machine (100) according to claim 2 or 3, characterised in that an alarm is associated with the triggering of the pre-actuator (P).
  5. Brushing machine (100) according to claim 2, 3 or 4, characterised in that the distributor (T2) is a proportional distributor.
  6. Brushing machine (100) according to one of claims 1 to 5, characterised in that it is provided with a control member, located in the cab of an apparatus for operating the machine, and which makes it possible to act on the operating pressure of the or each hydraulic jack (170).
  7. Brushing machine (100) according to any one of the preceding claims, characterised in that it comprises two parts (A) and (B) which are articulated relative to one another, the part (A) including the rotary brush (130), the part (B) including a device for collecting dirt (150), a manoeuvring means (120) being provided for moving the part (A) relative to the part (B) between a working position of the brushing machine (100) in which the rotary brush (130) is adapted to project dirt into the collecting device (150) and an open position of said machine enabling the collecting device (150) to be emptied.
  8. Brushing machine (100) according to any one of the preceding claims, characterised in that it is provided with a torsion limiting device (200) intended to limit the angular offset between the two cheeks (160) during the operation of said brushing machine (100).
  9. Brushing machine (100) according to claim 8, characterised in that the torsion limiting device (200) is made up of a pair of toothed wheels (210) engaging respectively with racks (212) provided on one of the edges of the cheeks (160), said toothed wheels being connected by means of a torsion shaft (214).
  10. Brushing machine (100) according to any one of the preceding claims, characterised in that it is provided with handling means (122) intended to allow an automotive land vehicle to push, pull or lift it.
  11. Brushing machine (100) according to any one of the preceding claims, characterised in that the rotary brush (130) is provided with a hollow hub (132) fixed by its ends to the cheeks (160) via plates (180, 180').
  12. Brushing machine (100) according to claim 11, characterised in that the hollow hub (132) is provided on the inside, and at one end, with a shaft (184) held by rolling means (R) mounted in a sleeve (182) of a plate (180), its other end being provided with a driving groove (186) in which is mounted a splined shaft of the hydraulic motor (140) fixed in a sleeve (182') of the other plate (180'), for rotationally driving the rotary brush (130), the shaft (184) passing through the hollow hub (132) so that its other end can be accommodated in the driving groove (186).
  13. Brushing machine (100) according to any one of claims 7 to 12, characterised in that a first scraper (230) is mounted between the rotary brush (130) and the collecting device (150) for improving the separation of the dirt retained on the rotary brush (130) to enable it to be ejected into the collecting device (150).
  14. Brushing machine (100) according to claim 13, characterised in that the first scraper (230) is made up of a rectangular blade fixed between a pair of plates, one edge of which may be positioned so as to be at a tangent to the bristles of the rotary brush (130).
  15. Brushing machine (100) according to any one of the preceding claims, characterised in that a second scraper (240) is disposed inside the brushing machine (100) to enable automatic cleaning of the rotary brush (130) when the brushing machine (100) is raised by the apparatus and the rotary brush (130) is rotationally driven by its drive motor (140).
  16. Brushing machine (100) according to any one of the preceding claims, characterised in that it is provided with at least one additional brush (250).
EP20050290483 2004-03-04 2005-03-03 Sweeping machine Active EP1571261B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0402307A FR2867202B1 (en) 2004-03-04 2004-03-04 BRUSHING MACHINE
FR0402307 2004-03-04

Publications (2)

Publication Number Publication Date
EP1571261A1 EP1571261A1 (en) 2005-09-07
EP1571261B1 true EP1571261B1 (en) 2012-08-29

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EP (1) EP1571261B1 (en)
FR (1) FR2867202B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU190156U1 (en) * 2018-12-17 2019-06-21 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный автомобильно-дорожный университет (СибАДИ)" Utility car
CN110076620B (en) * 2019-06-04 2021-03-23 廖丰政 Cutting and cleaning mechanism for machine tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1172630A (en) * 1967-05-26 1969-12-03 Asbrink Eiker Ab Improvements in or relating to Sweeping Machines.
GB1524953A (en) * 1975-12-02 1978-09-13 Leeford London Ltd Implement mounting assembly
IT1319463B1 (en) 2000-05-03 2003-10-10 Interpump Engineering Srl IMPROVED MOTOR SWEEPER WITH ELASTIC ADJUSTMENT OF THE BRUSH PRESSURE
FI4882U1 (en) * 2000-12-20 2001-04-18 Pikapaja Oy Collecting brush machine

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FR2867202A1 (en) 2005-09-09
FR2867202B1 (en) 2006-05-26
EP1571261A1 (en) 2005-09-07

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